29 Replies Latest reply on Apr 6, 2012 4:49 PM by rhughes-uk

    Webinar. What Webinar?

    rhughes-uk

      Well I have to say the Webinar was a bit of a disaster for me. I registered to attend and got email acceptance on 23/3 and spent an hour trying to get in no joy so many pitfalls. Really fed up. Yes I tried different browsers.

       

      Sad me. No Pi no webinar no CE mark yet. Oh well sits back and waits some more.

       

      One day my parts will come.

        • Re: Webinar. What Webinar?

          Ray,

             They plan to make the recording available on this site.

          You didn't miss much.  Eben was asked about progress on

          compliance testing, but said an answer would come later.

          So not much in the way of new information.

          • Re: Webinar. What Webinar?
            tmaddonna

            I'm right there with you Ray.  I tried for over an hour and the only thing I got was the Element14 server was down.

             

            Very disappointing.  I hope the end product - if I ever do get to see it, is better than the experience leading up to receiving it!

             

            PS - Farnell - If you're going to hold a webinar - make sure you have the bandwith, and systems to support the load!

            • Re: Webinar. What Webinar?
              saskwoch

              They recorded the webinar and have assured everyone it will be available on element14 soon.

              I joined late and found the http://www.element14.com/community/groups/raspberry-pi site was "Site Undergoing Maintenance" but luckily saw the tweet from @element14 that pointed to here.  I then got in ok.

              They are working hard on the compliance.  Ebon joined from Cardiff instead of Cambridge.

              • Re: Webinar. What Webinar?
                ChillyP

                I got in right when they said, "Well that wraps it up thanks for joining"

                • Re: Webinar. What Webinar?
                  Montala

                  I registered for it about a week ago, and logged in about 15 minutes beforehand.

                   

                  It was my first ever webinar, and despite my low broadband connection speed of about 1 Mb/s, I have to say that I was very impressed with the quality of the presentation.

                   

                  The slides were clearly displayed, there was a small (webcam size) live video (of Eben) running throughout, and also a live Q & A sesion, where some questions were being answered in 'real time'... and the sound was very clear.

                   

                  Apparently they had about 2.800 prior registrations, but I have no idea (yet) as to how many actually attended, although I am sure we will be told in due course.

                   

                  Well done Element 14, Eben, and all the others who were involved.

                   

                  As has already been mentioned, Eben was actually still in Cardiff at the time, and not back in Cambridge as had originally been planned.

                   

                  Edit: I was using Google Chrome running under Windows 7.

                  • Re: Webinar. What Webinar?
                    ubuntourist

                    Given that Raspberry Pi is an open-source beastie, I'd suggest a more open webinar system perhaps. I don't have anything in particular in mind. My Linux browsers complained about the Java (sending me to Oracle to resolve the issue), and complained about the audio.  Oracle Java has licensing issues, and my audio works fine over the web with just about everything else I've tried...

                     

                    Message was edited by: Kevin Cole

                     

                    Message was edited by: Kevin Cole

                      • Re: Webinar. What Webinar?
                        rgadsdon

                        I tried countless times (Linux with Firefox, and then with Chrome) without any success...    All I saw was an 'info' window in the java app, and myself showing up as the only attendee!     It would appear that maybe the webinar only worked with windows???    Oh, the irony..

                         

                        Robert Gadsdon.

                        • Re: Webinar. What Webinar?
                          jhwinters

                          I joined the webinar in plenty of time (almost half an hour in advance) but the webinar software seems distinctly flaky.  It complained I didn't have audio (untrue), and refused to show me anything other than a list of the speakers.  I tried dialling in to the 0800 number given, but although that got me audio it wasn't a lot of use without the pictures.

                           

                          Altogether a pretty naff software solution.  Please don't use it again.

                           

                          John

                            • Re: Webinar. What Webinar?
                              Colin Barnard

                              Unfortunately I didn't make it to the live showing (2 a.m my time), however I'm suprised about the reports of Webex failing. Webex are owned by Cisco and I have used it in another life for demonstrating medical pathology slides (2TB images) to researchers amd medical staff world wide - it always performed OK apart from the one hospital that was still on dial up and a weird exchange system.

                               

                              What is confusing if Webex someone hasn't used Webex before is that it isn't always apparent which page you should be looking at and how if you've clicked on the list of participants by mistake how to get back to the actual event.

                               

                              I have both Firefox and 11.0 and IE9 installed, and Webex does seem to work better with IE with those versions. There is also a Webex Player that some events require which can be downloaded and installed.

                                • Re: Webinar. What Webinar?
                                  morgaine

                                  Although it's generalizing, all proprietary systems are doomed to be flakey, non-portable, and permanently giving people headaches.

                                   

                                  Webex is a good example of this.  And, given Cisco's litigation-based "business plan" for Webex, it's not going to get any better in the future.  I would tend to recommend to Element 14 that they stick to open standards, even if it means a reduction in bullet points.  At least open standards reduce the headaches at the same time.

                                  • Re: Webinar. What Webinar?
                                    jhwinters

                                    I have both Firefox and 11.0 and IE9 installed, and Webex does seem to work better with IE with those versions.

                                     

                                    I think you may have put your finger on it there.  It looks like this is an application which is thoroughly tested for Windows, but whilst it provides token Linux support it's a bit touch-and-go whether it works or not.

                                     

                                    I was using Debian Squeeze with Firefox.  I checked the hardware and software requirements in advance.  It said I would need Flash and the test for Flash worked fine.  (I use the official version.)  When I came to join the webinar however, it seemed to download a Java application instead.  This ran but refused to show the webinar.

                                     

                                    It would be good if there were a way to test in advance whether the software is working.  It's really annoying to find out only once the thing has started that the software doesn't work, then spend half the time of the event hunting through the rather sketchy help to see if you can find anything.

                                     

                                    I did find one knowledge-base article which said that the software wouldn't work on Windows 7 unless you had something plugged into your microphone port (huh, what?!)  I tried plugging a microphone in and restarting in case the same bug affects the Linux version but that didn't help.

                                     

                                    Thank you to the person who put a copy on Youtube.  It was a gently informative talk.  Pity about the technology failure.

                                     

                                    John

                                      • Re: Webinar. What Webinar?

                                        I've often had no luck with Webex in other browsers than IE - just curious if any of you have have better luck with any other webinar programs that you've used and prefer over Webex?  Any "open source" suggestions get bonus points!   I'd like to share with the team here who hosts the webinars so we can look at using it in the future. 

                                         

                                        Thanks for your ideas and feedback!

                                        Nicole, element14 Community Manager

                                          • Re: Webinar. What Webinar?
                                            grumpyoldgit

                                            I couldn't get on to the Webinar at all with either Chrome or Firefox (Am on Lubuntu 11.10). Then saw tweet from element14 with alternative url. Got in first time.

                                            • Re: Webinar. What Webinar?
                                              morgaine

                                              Anything that's based on Internet standards is always well supported on all platforms, so really all it requires is to decide what media types you want to provide and then pick Internet standards that implement it.  This is typically more "hassle" than just buying in a proprietary integrated solution like Webex, but it almost always works better across the very diverse populations of the Internet.

                                               

                                              As an example, to implement something like the recent "Webinar" (a word that takes days off my life every time I hear it), you want at least an audio/video stream and a bidirectional chat channel.  The main Internet standards for these media types are very well known (RTSP, RTP, IRC, XMPP) and extremely widely supported by both proprietary and open source server-side solutions.

                                               

                                              I know very little about proprietary ones, but open source streaming of both video and audio is typically done with Icecast, while ircd or ejabberd are commonly used for the chat stream.  (I'd also add an additional audio-only stream for accessibility, or for those who want to listen on the move and don't have video-capable smartphones, or simply as fallback when video fails.)

                                               

                                              The main fly in the ointment is that you need a local techie to configure it all, instead of just paying a company like Webex.  OTOH, a techie is just a contract hire away, even if you have no in-house tech to spare.

                                               

                                              Morgaine.

                                               

                                              PS. Just found another open source video streaming system --- http://goalbit.sourceforge.net/  -- don't know anything about it though.

                                              • Re: Webinar. What Webinar?
                                                GreenYamo

                                                Hi Nicole, I'm afraid that I've mainly experience with Webex in a corporate (= locked down) environment where we *only* have Internet Explorer. Other than the odd minor glitch it works well and better than the alternative that we have on offer. I guess locked down environments do have an upside occasionally.

                                                 

                                                I couldn't make the live webinar as I was at work but will look at the recording. Sounds like I might not have made it in anyway !

                                      • Re: Webinar. What Webinar?

                                        [note1: a more nicely formatted version by ubuntourist appears 4 messages below]

                                        [note2: this transcript does not include answers given verbally by Eben]

                                         

                                        Q&A Session for  Programming The Raspberry Pi Session number:  841475134

                                        Date:  Wednesday, April 04, 2012 Starting time:  7:03 AM

                                        ________________________________________________________________   

                                        nuno alves     - 6:30 AM  Q:  good morning!      

                                        Mike Powell     - 6:37 AM  A:  Hi everyone. Welcome - we're just setting everything up now...    ________________________________________________________________   

                                        AB AB     - 6:38 AM  Q:  Excuse me when is it starting      

                                        Chris Sullivan     - 6:39 AM  A:  Hi, the session will begin in 20 minutes.  Not long now!    ________________________________________________________________   

                                        Jeffrey Tooker     - 6:48 AM  Q:  Hello from California      

                                        Mike Powell     - 6:48 AM  A:  Welcome everyone - attendees joining very rapidly now!    ________________________________________________________________   

                                        chris hillcox     - 6:45 AM  Q:  i cant hear anything at the moment. how do I know if the audio works.      

                                        Mike Powell     - 6:52 AM  A:  Hi Chris - it'sll be quiet until around 2.58 pm BST    ________________________________________________________________   

                                        David S     - 7:03 AM  Q:  Hi Mike. Will this be recorded and made available?      

                                        Mike Powell     - 7:03 AM  A:  Hi David - yes it will be.   

                                        ________________________________________________________________   

                                        Rosso Maltese     - 6:59 AM  Q:  sorry, still no sound      

                                        Mike Powell     - 7:04 AM  A:  Have you used the computer audio or telephone option? Worst case we're recording this for you...    ________________________________________________________________   

                                        chris hillcox     - 6:48 AM  Q:  Is it ok if I record this on my dictaphone. I don't have my Pi yet so may want to listen again when I do get it.      

                                        Mike Powell     - 7:06 AM  A:  Hi Chris, this will be recorded for you anyway.    ________________________________________________________________   

                                        Andrea Gatti     - 6:47 AM  Q:  excuse me, what I have to do if I see the message error "You do not have the necessary audio  capability to join Audio Broadcasting"? Thanks a lot!      

                                        Mike Powell     - 7:07 AM  A:  Hi Andrea, try using the Audio option in WebEx and dial in using a telephone.

                                        ________________________________________________________________   

                                        Liam Fraser     - 6:46 AM  Q:  Is this event being recorded for those who miss it?      

                                        Mike Powell     - 7:07 AM  A:  Hi Liam, yes it is.  

                                        ________________________________________________________________   

                                        Timothy Giles     - 7:08 AM  Q:  Is this the alpha , beta or final board in the image?      

                                        Mike Powell     - 7:09 AM  A:  Hi Tim, I can't verify, but I'd be surprised if it wasn't a final board. Eben is in a different location to me.    ________________________________________________________________   

                                        AB AB     - 7:09 AM  Q:  What type of HDMI port do you use to connect to a PC Monitor for a laptop.      

                                        Mike Powell     - 7:10 AM  A:  Hi AB, in my demos I used a standard HDMI-HDMI cable, then a HDMI-DVI connector for a DVI monitor.    ________________________________________________________________   

                                        Keith Madderson     - 7:10 AM  Q:  is the Raspberry Pi being supplied boxed, or is it just as a PCB as being shown here?      

                                        Mike Powell     - 7:11 AM  A:  Hi Keith, as shown.  

                                        ________________________________________________________________   

                                        Evandro Junior     - 7:11 AM  Q:  Dear Eben, I´ve received an email from element 14 saying that the pre-order for Raspbery PI was availble, however there was no option to select Brazil for the country of delivery on the form. Can it be shipped to Brazil?      

                                        Mike Powell     - 7:13 AM  A:  Hello Evandro, it can be shipped to Brasil. Please contact your local Newark office for help.    ________________________________________________________________   

                                        Chris Prosser     - 7:12 AM  Q:  Does the SD Card have to be 2GB?      

                                        Mike Powell     - 7:14 AM  A:  Hi Chris, 2GB is a good size. 2GB+ is what you need.    ________________________________________________________________   

                                        Stéphane Zorio     - 7:13 AM  Q:  Is the Raspberry PI work with 16Gb or 32Gb SD Card ?      

                                        Mike Powell     - 7:14 AM  A:  Hi Stephane, I haven't tested it. No reason why it shouldn't work.    ________________________________________________________________   

                                        Andrea Benini     - 7:12 AM  Q:  I guess dd-removable is some sort of port of linux dd command, is it right ? Because I don't use Win      

                                        Mike Powell     - 7:15 AM  A:  Hi Andrea, I don't know the dd project, but I'd assume so.    ________________________________________________________________   

                                        Janar Plinkner     - 7:13 AM  Q:  I presume the image can be installed to the SD card in linux with the command dd?       

                                        Mike Powell     - 7:16 AM  A:  Hi Janar, yes thats right.   

                                        ________________________________________________________________   

                                        Chad LaFarge     - 7:14 AM  Q:  Does the Debian distro used have UVC drivers (for driverless Webcams) included? I've also seen references to a Fedora and Ubuntu distro... same question. Many thanks.      

                                        Mike Powell     - 7:16 AM  A:  Hi Chad, I haven't tried looking for that yet. Let us know!    ________________________________________________________________   

                                        Mark Redden     - 7:14 AM  Q:  Can an SD card larger than 2GB be used?      

                                        Mike Powell     - 7:16 AM  A:  Hi Mark, mine was 4GB, so yes it can.   

                                        ________________________________________________________________   

                                        Jamie Oliver     - 7:14 AM  Q:  The presentation seems to be lagging, and taking ages to update between slides. Anything I can do to improve this?      

                                        Mike Powell     - 7:17 AM  A:  Hi Jamie, not sure - think it may be an issue at Eben's end. Sorry.    ________________________________________________________________   

                                        Patrick Potter     - 7:14 AM  Q:  Mike, what should we look for in an SD card?  Are there some cards we should avoid?      

                                        Mike Powell     - 7:18 AM  A:  Hello Patrick, please look at the bundled packages on element14.com for guidance.

                                        ________________________________________________________________   

                                        gerrit polder     - 7:15 AM  Q:  is it posible to flash the sd card form linux or mac os x using standard dd tools?      

                                        Mike Powell     - 7:19 AM  A:  Hi Gerrit, yes for Linux. Don't know for Mac OS.    ________________________________________________________________   

                                        Pavol Bujna     - 7:15 AM  Q:  can I download this event later?      

                                        Mike Powell     - 7:19 AM  A:  Hi Pavol, yes the video will be available later on.    ________________________________________________________________   

                                        Eric Lange     - 7:15 AM  Q:  What will happen if you plug the unit into a PC instead of a mobile charger?      

                                        Mike Powell     - 7:20 AM  A:  Eric, everything will work fine.   

                                        ________________________________________________________________   

                                        Jay Bhagat     - 7:15 AM  Q:  will the clock be persistent?      

                                        Mike Powell     - 7:21 AM  A:  Hi Jay, no - there is no RTC on board. But if the board is connected to the internet via it's ethernet adaptor, the OS goes and find the time/date from a time server.   

                                        ________________________________________________________________   

                                        Brian Schmiedlin     - 7:17 AM  Q:  Will the clock keep time even though the unit is powered off?

                                        Mike Powell     - 7:21 AM  A:  Hi Brian, no there is no RTC.

                                        ________________________________________________________________   

                                        Nik Butler     - 7:18 AM  Q:  is there vi  as well ?       

                                        Mike Powell     - 7:21 AM  A:  Hi Nik, yes, vi is there.   

                                        ________________________________________________________________   

                                        Lee Hardman     - 7:19 AM  Q:  Hi Mike, is IDLE bundled with the standard image?      

                                        Mike Powell     - 7:22 AM  A:  Hi Lee, I don't know - I'd need to check.   

                                        ________________________________________________________________   

                                        Matt Moss     - 7:20 AM  Q:  Hi Mike, Is the Rasberry Pi's RCA Video output going to be PAL or NTSC format? Thanks!      

                                        Mike Powell     - 7:23 AM  A:  Hi Matt, both and is configurable in a text file.    ________________________________________________________________   

                                            - 7:24 AM  Q:  when will Fedora be available?     

                                        ________________________________________________________________   

                                        Jean-Francois Lagarde     - 7:19 AM  Q:  Hello Mike, a little off topic, but when I ordered the Raspberry Pi on newark a few weeks ago, it said that it would be available for shipping mid-april. This morning I checked my order and it says mi-august. Everything has been delayed?      

                                        Mike Powell     - 7:24 AM  A:  Hi Jean-Francois, I'm surprised at that. Please speak to your local Newark office about this.    ________________________________________________________________   

                                        martijn steegmans     - 7:22 AM  Q:  Does the hdmi port support digital audio?      

                                        Mike Powell     - 7:26 AM  A:  Hi Martijn - yes it does.   

                                        ________________________________________________________________   

                                        Frank Buss     - 7:22 AM  Q:  is it possible to start something more comfortable like KDE or Gnome on it?      

                                        Mike Powell     - 7:27 AM  A:  Hi Frank - yes, liight versions exist to give a very impressive desktop environment.

                                        ________________________________________________________________   

                                        John Ennis     - 7:23 AM  Q:  Is it possible to ssh into the Pi?      

                                        Mike Powell     - 7:27 AM  A:  hi John - yes it is. In the Debian distro, the SSH server starts automatically at boot.    ________________________________________________________________   

                                        mark goldie     - 7:24 AM  Q:  does the Pi board come with some kind of BIOS control? Also, on connecting the LAn cable, how would one control DHCP registration ?      

                                        Mike Powell     - 7:28 AM  A:  Hi Mark, there is no BIOS, but there is a configuration text file to set up the basics of the board.    ________________________________________________________________   

                                        Jean-Francois Lagarde     - 7:22 AM  Q:  I understand that the board automatically connects to a time server and the internet via dhcp? if we need static ip, I guess we need to modify the sources or is there a way to configure the settings of the Pi?      

                                        Mike Powell     - 7:29 AM  A:  Hi Jean-Francois, you can modify the network settings easily as you would any computer.    ________________________________________________________________   

                                        Andrea Benini     - 7:25 AM  Q:  Is there an I2C bus in the GPIO connector available for external peripherals ? I've made a really easy RTC circuit on I2C bus and I'd like to connect it to the PI. I can supply an RTC if the linux image is able to read it from I2C      

                                        Mike Powell     - 7:31 AM  A:  Hi Andrea - yes there is.   

                                        ________________________________________________________________   

                                        Herbert Keks     - 7:30 AM  Q:  Will it be possible to run http://www.tvdr.de/ or xbmc on the Raspberry? This would be the killer app in my eyes. But I'm not sure about the video hw acceleration.       

                                        Mike Powell     - 7:34 AM  A:  xbmc has been shown to work. The onboard GPU supports high resolution, full motion video.    ________________________________________________________________   

                                        gary Paterson     - 7:31 AM  Q:  Hi Mike, what is the default version of python and is python 3 available?      

                                        Mike Powell     - 7:34 AM  A:  Hi gary, I don't know the answer to that sorry.    ________________________________________________________________   

                                            - 7:35 AM  Q:  will Class B (residential) FCC/EC compliance be required?      ________________________________________________________________   

                                        s2. henry     - 7:32 AM  Q:  hi,  what power supply do we need ? (voltage, current, physical size ?)      

                                        Mike Powell     - 7:36 AM  A:  A 'regular' phone charger with microUSB plug will work.    ________________________________________________________________   

                                            - 7:36 AM  Q:  does Farnell have a rep at the factory?  If so, can they take a picture showing how many units have been built?      ________________________________________________________________   

                                           - 7:37 AM  Q:  how many pallets of units were shipped back to China when the ethernet jack problem was found?      ________________________________________________________________   

                                        rohan kumar     - 7:38 AM  Q:  Is the Pi overclockable?      

                                        Mike Powell     - 7:39 AM  A:  Hi Rohan, yes it can be via the configuration script.    ________________________________________________________________   

                                        Charlie Godwin-Brown     - 7:39 AM  Q:  Can you get a desktop for your RPi?      

                                        Mike Powell     - 7:39 AM  A:  Yes, the Debian distro contains a GUI that you start with sudo startx. ________________________________________________________________   

                                        bryce foster     - 7:44 AM  Q:  If the raspberry pi is put in an enclosed project box will we have to worry about the ARM processor over heating?      

                                        Mike Powell     - 7:42 AM  A:  Hello Bryce, in my opinion you don't need to worry. The whole board only consumes 2-3W.    ________________________________________________________________   

                                        abi nathan     - 7:49 AM  Q:  what is the maximum amperage the pi can handle at 5v? Thanx      

                                        Mike Powell     - 7:44 AM  A:  Hi Abi, the Pi draws the current it requires from the USB power source. This is typically 500mA-750mA depending on what the GPU is doing.   

                                        ________________________________________________________________   

                                        Stéphane Zorio     - 7:42 AM  Q:  Is a Apache server include in the Debian Distribution ?      

                                        Mike Powell     - 7:45 AM  A:  Hi Stephane, I don't know, but you can use a apt-get install command to install it as long as you are on the internet.    ________________________________________________________________   

                                        Stefan Fischer     - 7:42 AM  Q:  is the gpio pin description available?      

                                        Mike Powell     - 7:46 AM  A:  Hi Stefan - look at element14, the pin assignment is there.    ________________________________________________________________   

                                        Richard Blundell     - 7:43 AM  Q:  I'm hoping to add a 2nd network adaptor to my Pi (when it comes) and use it as a logger/filter on my home broadband.  Will this work and can you give me any pointers where to look to set this up (I only had a little Linux use some years ago)?      

                                        Mike Powell     - 7:47 AM  A:  I don't see why this shouldnt work using IP Tables in Linux for example.

                                        ________________________________________________________________   

                                        Andrea Gatti     - 7:43 AM  Q:  Hi, I'm a beginner so I want to know if there is any manual or guide online for learning to use and programm the raspberry pi?

                                        Mike Powell     - 7:48 AM  A:  Hi Andrea - look at the various forums and guides that will grow on element14 as time goes by.    ________________________________________________________________   

                                        John Morris     - 7:44 AM  Q:  Can I hook the RPi up to a laptop screen?      

                                        Mike Powell     - 7:50 AM  A:  Hi John, not directly. Only to HDMI TV, DVI monitor or older style  TV. Command line via an SSH terminal is possible using an external laptop.   

                                        ________________________________________________________________   

                                        Alessandro Ancillotti     - 7:45 AM  Q:  Will RaspberryPI able to run a webserver like lighttpd?      

                                        Mike Powell     - 7:52 AM  A:  Hi Allesandro, yes I have run mini_httpd on it.    ________________________________________________________________   

                                        AB AB     - 7:50 AM  Q:  can you use a triple usb adapter.      

                                        Mike Powell     - 7:53 AM  A:  Yes, hubs are supported.   

                                        ________________________________________________________________   

                                        Chad Gray     - 7:53 AM  Q:  I am not a linux guy, but would we have to compile software like Apache/Tomcat/MySQL for the RPI?  Any examples of doing this?      

                                        Mike Powell     - 7:54 AM  A:  Yes, you can compile any programme from source, but it doesn't mean the programme will run acceptably.    ________________________________________________________________   

                                        Andrew Gates     - 7:54 AM  Q:  I missed the beginning of the presentation, is it going to be posted on the Raspberry Pi website?      

                                        Mike Powell     - 7:55 AM  A:  Hi Andrew, it will be on element14.   

                                        ________________________________________________________________   

                                        Jean BRUDER     - 7:55 AM  Q:  Hi all, sorry to be late ... Is is possible to download this webinar if it has been recorded ?      

                                        Mike Powell     - 7:55 AM  A:  Hello Jean, it will be available on element14 soon. Don't worry.    ________________________________________________________________   

                                        Patrick Daubinger     - 7:56 AM  Q:  are you planing to open the pcb schematics?      

                                        Mike Powell     - 7:56 AM  A:  Hi patrick, they will be opened later this year.    ________________________________________________________________   

                                        adam ricket     - 7:57 AM  Q:  are there any plans for a distributor in australia?      

                                        Mike Powell     - 7:58 AM  A:  It is element14.  

                                          • Re: Webinar. What Webinar?
                                            morgaine

                                            Thanks for the transcript, coder27.

                                             

                                            Rather questionable advice given as an answer at 7:39 AM though:

                                             

                                                 7:39 AM  A:  Yes, the Debian distro contains a GUI that you start with sudo startx.

                                             

                                            X11 should never be run as root.  It creates too large an attack surface, and people will regret it the first time that they make a mistake like "rm -rf / tmp/foo" (superfluous space).  Always run X as your non-root user, protect partially sensitive things with group privileges, and sudo only the occasional special command that absolutely must run as root.

                                             

                                            Morgaine.

                                            • Re: Webinar. What Webinar?
                                              ubuntourist

                                              Q&A Session for Programming The Raspberry Pi

                                              Session number:  841475134
                                              Date:  Wednesday, April 04, 2012
                                              Starting time:  7:03 AM


                                              nuno alves6:30 AMQ:good morning!
                                              Mike Powell6:37 AMA:Hi everyone. Welcome - we're just setting everything up now...
                                              AB AB6:38 AMQ:Excuse me when is it starting
                                              Chris Sullivan6:39 AMA:Hi, the session will begin in 20 minutes.  Not long now!
                                              Jeffrey Tooker6:48 AMQ:Hello from California
                                              Mike Powell6:48 AMA:Welcome everyone - attendees joining very rapidly now!
                                              chris hillcox6:45 AMQ:i cant hear anything at the moment. how do I know if the audio works.
                                              Mike Powell6:52 AMA:Hi Chris - it'sll be quiet until around 2.58 pm BST
                                              David S7:03 AMQ:Hi Mike. Will this be recorded and made available?
                                              Mike Powell7:03 AMA:Hi David - yes it will be.
                                              Rosso Maltese6:59 AMQ:sorry, still no sound
                                              Mike Powell7:04 AMA:Have you used the computer audio or telephone option? Worst case we're recording this for you...
                                              chris hillcox6:48 AMQ:Is it ok if I record this on my dictaphone. I don't have my Pi yet so may want to listen again when I do get it.
                                              Mike Powell7:06 AMA:Hi Chris, this will be recorded for you anyway.
                                              Andrea Gatti6:47 AMQ:excuse me, what I have to do if I see the message error "You do not have the necessary audio  capability to join Audio Broadcasting"? Thanks a lot!
                                              Mike Powell7:07 AMA:Hi Andrea, try using the Audio option in WebEx and dial in using a telephone.
                                              Liam Fraser6:46 AMQ:Is this event being recorded for those who miss it?
                                              Mike Powell7:07 AMA:Hi Liam, yes it is.
                                              Timothy Giles7:08 AMQ:Is this the alpha , beta or final board in the image?
                                              Mike Powell7:09 AMA:Hi Tim, I can't verify, but I'd be surprised if it wasn't a final board. Eben is in a different location to me.
                                              AB AB7:09 AMQ:What type of HDMI port do you use to connect to a PC Monitor for a laptop.
                                              Mike Powell7:10 AMA:Hi AB, in my demos I used a standard HDMI-HDMI cable, then a HDMI-DVI connector for a DVI monitor.
                                              Keith Madderson7:10 AMQ:is the Raspberry Pi being supplied boxed, or is it just as a PCB as being shown here?
                                              Mike Powell7:11 AMA:Hi Keith, as shown.
                                              Evandro Junior7:11 AMQ:Dear Eben, I´ve received an email from element 14 saying that the pre-order for Raspbery PI was availble, however there was no option to select Brazil for the country of delivery on the form. Can it be shipped to Brazil?
                                              Mike Powell7:13 AMA:Hello Evandro, it can be shipped to Brasil. Please contact your local Newark office for help.
                                              Chris Prosser7:12 AMQ:Does the SD Card have to be 2GB?
                                              Mike Powell7:14 AMA:Hi Chris, 2GB is a good size. 2GB+ is what you need.
                                              Stéphane Zorio7:13 AMQ:Is the Raspberry PI work with 16Gb or 32Gb SD Card ?
                                              Mike Powell7:14 AMA:Hi Stephane, I haven't tested it. No reason why it shouldn't work.
                                              Andrea Benini7:12 AMQ:I guess dd-removable is some sort of port of linux dd command, is it right ? Because I don't use Win
                                              Mike Powell7:15 AMA:Hi Andrea, I don't know the dd project, but I'd assume so.
                                              Janar Plinkner7:13 AMQ:I presume the image can be installed to the SD card in linux with the command dd?
                                              Mike Powell7:16 AMA:Hi Janar, yes thats right.
                                              Chad LaFarge7:14 AMQ:Does the Debian distro used have UVC drivers (for driverless Webcams) included? I've also seen references to a Fedora and Ubuntu distro... same question. Many thanks.
                                              Mike Powell7:16 AMA:Hi Chad, I haven't tried looking for that yet. Let us know!
                                              Mark Redden7:14 AMQ:Can an SD card larger than 2GB be used?
                                              Mike Powell7:16 AMA:Hi Mark, mine was 4GB, so yes it can.
                                              Jamie Oliver7:14 AMQ:The presentation seems to be lagging, and taking ages to update between slides. Anything I can do to improve this?
                                              Mike Powell7:17 AMA:Hi Jamie, not sure - think it may be an issue at Eben's end. Sorry.
                                              Patrick Potter7:14 AMQ:Mike, what should we look for in an SD card?  Are there some cards we should avoid?
                                              Mike Powell7:18 AMA:Hello Patrick, please look at the bundled packages on element14.com for guidance.
                                              gerrit polder7:15 AMQ:is it posible to flash the sd card form linux or mac os x using standard dd tools?
                                              Mike Powell7:19 AMA:Hi Gerrit, yes for Linux. Don't know for Mac OS.
                                              Pavol Bujna7:15 AMQ:can I download this event later?
                                              Mike Powell7:19 AMA:Hi Pavol, yes the video will be available later on.
                                              Eric Lange7:15 AMQ:What will happen if you plug the unit into a PC instead of a mobile charger?
                                              Mike Powell7:20 AMA:Eric, everything will work fine.
                                              Jay Bhagat7:15 AMQ:will the clock be persistent?
                                              Mike Powell7:21 AMA:Hi Jay, no - there is no RTC on board. But if the board is connected to the internet via it's ethernet adaptor, the OS goes and find the time/date from a time server.
                                              Brian Schmiedlin7:17 AMQ:Will the clock keep time even though the unit is powered off?
                                              Mike Powell7:21 AMA:Hi Brian, no there is no RTC.
                                              Nik Butler7:18 AMQ:is there vi  as well ?
                                              Mike Powell7:21 AMA:Hi Nik, yes, vi is there.
                                              Lee Hardman7:19 AMQ:Hi Mike, is IDLE bundled with the standard image?
                                              Mike Powell7:22 AMA:Hi Lee, I don't know - I'd need to check.
                                              Matt Moss7:20 AMQ:Hi Mike, Is the Rasberry Pi's RCA Video output going to be PAL or NTSC format? Thanks!
                                              Mike Powell7:23 AMA:Hi Matt, both and is configurable in a text file.
                                              7:24 AMQ:when will Fedora be available?
                                              Jean-Francois Lagarde7:19 AMQ:Hello Mike, a little off topic, but when I ordered the Raspberry Pi on newark a few weeks ago, it said that it would be available for shipping mid-april. This morning I checked my order and it says mi-august. Everything has been delayed?
                                              Mike Powell7:24 AMA:Hi Jean-Francois, I'm surprised at that. Please speak to your local Newark office about this.
                                              martijn steegmans7:22 AMQ:Does the hdmi port support digital audio?
                                              Mike Powell7:26 AMA:Hi Martijn - yes it does.
                                              Frank Buss7:22 AMQ:is it possible to start something more comfortable like KDE or Gnome on it?
                                              Mike Powell7:27 AMA:Hi Frank - yes, liight versions exist to give a very impressive desktop environment.
                                              John Ennis7:23 AMQ:Is it possible to ssh into the Pi?
                                              Mike Powell7:27 AMA:hi John - yes it is. In the Debian distro, the SSH server starts automatically at boot.
                                              mark goldie7:24 AMQ:does the Pi board come with some kind of BIOS control? Also, on connecting the LAn cable, how would one control DHCP registration ?
                                              Mike Powell7:28 AMA:Hi Mark, there is no BIOS, but there is a configuration text file to set up the basics of the board.
                                              Jean-Francois Lagarde7:22 AMQ:I understand that the board automatically connects to a time server and the internet via dhcp? if we need static ip, I guess we need to modify the sources or is there a way to configure the settings of the Pi?
                                              Mike Powell7:29 AMA:Hi Jean-Francois, you can modify the network settings easily as you would any computer.
                                              Andrea Benini7:25 AMQ:Is there an I2C bus in the GPIO connector available for external peripherals ? I've made a really easy RTC circuit on I2C bus and I'd like to connect it to the PI. I can supply an RTC if the linux image is able to read it from I2C
                                              Mike Powell7:31 AMA:Hi Andrea - yes there is.
                                              Herbert Keks7:30 AMQ:Will it be possible to run http://www.tvdr.de/ or xbmc on the Raspberry? This would be the killer app in my eyes. But I'm not sure about the video hw acceleration.
                                              Mike Powell7:34 AMA:xbmc has been shown to work. The onboard GPU supports high resolution, full motion video.
                                              gary Paterson7:31 AMQ:Hi Mike, what is the default version of python and is python 3 available?
                                              Mike Powell7:34 AMA:Hi gary, I don't know the answer to that sorry.
                                              robert jones7:35 AMQ:will Class B (residential) FCC/EC compliance be required?
                                              s2. henry7:32 AMQ:hi,  what power supply do we need ? (voltage, current, physical size ?)
                                              Mike Powell7:36 AMA:A 'regular' phone charger with microUSB plug will work.
                                              7:36 AMQ:does Farnell have a rep at the factory?  If so, can they take a picture showing how many units have been built?
                                              7:37 AMQ:how many pallets of units were shipped back to China when the ethernet jack problem was found?
                                              rohan kumar7:38 AMQ:Is the Pi overclockable?
                                              Mike Powell7:39 AMA:Hi Rohan, yes it can be via the configuration script.
                                              Charlie Godwin-Brown7:39 AMQ:Can you get a desktop for your RPi?
                                              Mike Powell7:39 AMA:Yes, the Debian distro contains a GUI that you start with sudo startx.
                                              bryce foster7:44 AMQ:If the raspberry pi is put in an enclosed project box will we have to worry about the ARM processor over heating?
                                              Mike Powell7:42 AMA:Hello Bryce, in my opinion you don't need to worry. The whole board only consumes 2-3W.
                                              abi nathan7:49 AMQ:what is the maximum amperage the pi can handle at 5v? Thanx
                                              Mike Powell7:44 AMA:Hi Abi, the Pi draws the current it requires from the USB power source. This is typically 500mA-750mA depending on what the GPU is doing.
                                              Stéphane Zorio7:42 AMQ:Is a Apache server include in the Debian Distribution ?
                                              Mike Powell7:45 AMA:Hi Stephane, I don't know, but you can use a apt-get install command to install it as long as you are on the internet.
                                              Stefan Fischer7:42 AMQ:is the gpio pin description available?
                                              Mike Powell7:46 AMA:Hi Stefan - look at element14, the pin assignment is there.
                                              Richard Blundell7:43 AMQ:I'm hoping to add a 2nd network adaptor to my Pi (when it comes) and use it as a logger/filter on my home broadband.  Will this work and can you give me any pointers where to look to set this up (I only had a little Linux use some years ago)?
                                              Mike Powell7:47 AMA:I don't see why this shouldnt work using IP Tables in Linux for example.
                                              Andrea Gatti7:43 AMQ:Hi, I'm a beginner so I want to know if there is any manual or guide online for learning to use and programm the raspberry pi?
                                              Mike Powell7:48 AMA:Hi Andrea - look at the various forums and guides that will grow on element14 as time goes by.
                                              John Morris7:44 AMQ:Can I hook the RPi up to a laptop screen?
                                              Mike Powell7:50 AMA:Hi John, not directly. Only to HDMI TV, DVI monitor or older style  TV. Command line via an SSH terminal is possible using an external laptop.
                                              Alessandro Ancillotti7:45 AMQ:Will RaspberryPI able to run a webserver like lighttpd?
                                              Mike Powell7:52 AMA:Hi Allesandro, yes I have run mini_httpd on it.
                                              AB AB7:50 AMQ:can you use a triple usb adapter.
                                              Mike Powell7:53 AMA:Yes, hubs are supported.
                                              Chad Gray7:53 AMQ:I am not a linux guy, but would we have to compile software like Apache/Tomcat/MySQL for the RPI?  Any examples of doing this?
                                              Mike Powell7:54 AMA:Yes, you can compile any programme from source, but it doesn't mean the programme will run acceptably.
                                              Andrew Gates7:54 AMQ:I missed the beginning of the presentation, is it going to be posted on the Raspberry Pi website?
                                              Mike Powell7:55 AMA:Hi Andrew, it will be on element14.
                                              Jean BRUDER7:55 AMQ:Hi all, sorry to be late ... Is is possible to download this webinar if it has been recorded ?
                                              Mike Powell7:55 AMA:Hello Jean, it will be available on element14 soon. Don't worry.
                                              Patrick Daubinger7:56 AMQ:are you planing to open the pcb schematics?
                                              Mike Powell7:56 AMA:Hi patrick, they will be opened later this year.
                                              adam ricket7:57 AMQ:are there any plans for a distributor in australia?
                                              Mike Powell7:58 AMA:It is element14.

                                               

                                              Message was edited by: Kevin Cole

                                            • Re: Webinar. What Webinar?
                                              DavisonInc

                                              Hi everyone! I uploaded a temporary recording of the Webinar until e14 puts their better and official copy up.

                                               

                                              http://www.youtube.com/watch?v=woSUVNovI70