> My old bootargs in boot.scr were:

> quiet rw fixrtc mem=1G@0x80000000 root=/dev/mmcblk0p2
> console=ttyO2,115200n8 omapdss.def_disp=dvi rootwait ip=dhcp

> I created a new boot.scr in the boot partition with bootargs set as:

> ro elevator=noop console=ttyO2,115200n8 mem=1G@0x80000000
> root=/dev/mmcblk0p2 fixrtc splash rootwait ip=dhcp

> I plugged into the DVI port on the Pandaboard, powered on, and saw two
> penguins in the upper left corner.  I then tried the HDMI port and saw the
> same thing.  At this point I was unable to log in via the serial console,
> and saw no login prompt from either display - just penguins.  I can ping
> the board's IP address but not SSH.  I'm probably missing something obvious
> here...

> Jared

> On Sunday, November 11, 2012 11:40:35 PM UTC-8, Xavier Boudet wrote:

>>  Answers inline.
>> Can you clarify what is/are the remaining issue(s)? The gst pipeline?

>> Regards, Xavier Boudet
>> On 11/09/2012 08:23 PM, JB wrote:

>> Hi Xavier.  Thanks very much for the quick reply!  I'm pretty new to
>> Pandaboard and I've been trying to get a minimal Ubuntu core image
>> working.  All I need is for gstreamer to be able to capture from a USB
>> webcam, H.264 encode, H.264 decode, and render to X11 without a window
>> manager.

>> I followed these instructions to create an Ubuntu core image for the
>> Pandaboard:
>> http://www.omappedia.com/wiki/OMAP_Ubuntu_Core

>> With these modifications:
>> A.) Before "apt-get install ubuntu-omap4-extras --yes --force-yes" I did
>> "apt-get install u-boot-tools"
>> B.) After the "apt-get install ubuntu-omap4-extras --yes --force-yes" I
>> shut down and modified boot.scr in the boot partition to:

>>     fatload mmc 0:1 0x80000000 uImage
>>     setenv bootargs quiet rw fixrtc mem=1G@0x80000000 root=/dev/mmcblk0p2
>> console=ttyO2,115200n8 omapdss.def_disp=dvi rootwait ip=dhcp
>>     bootm 0x80000000

>>  I am still not sure why you are using omapdss.def_disp=dvi

>> The instructions say to use "vram=32M" but I know that is no longer
>> valid, so I took that out.  Also, both the DVI port and HDMI port had no
>> signal until I added omapdss.def_disp=dvi to the bootargs.  Even after
>> doing that the HDMI port was activated, not the DVI one.  Strange...

>> With the TI PPA kernel, HDMI and DVI shall be auto-detected at boot and
>> you shall be able to use both connector.

>> C.) Before doing the "apt-get install xorg", I did "apt-get install
>> --reinstall pvr-omap4-dkms" because I did not see "omapdrm_prv" from lsmod.

>> omapdrm_prv will be triggered only after X startup in fact.

>> D.) After doing the "apt-get install xorg" I stopped with the
>> instructions, since I don't want a window manager.  I'm trying to make an
>> image as minimal as possible.

>> To answer your questions (with my Pandaboard in the state described
>> above):
>> 1.) So you are using TI PPA, correct?

>> Yes.  In /etc/apt/sources.list:
>> # TI release PPA
>> deb http://ppa.launchpad.net/tiomap-dev/release/ubuntu precise main
>> deb-src http://ppa.launchpad.net/tiomap-dev/release/ubuntu precise main

>> 2.) Can you ensure that you perform dist-upgrade? We indeed have renamed
>> some packages so aptitude needs that you perform dist-upgrade to replace
>> existing package with new ones.

>> Apparently I already have the latest:
>> root@localhost:~# apt-get dist-upgrade
>> Reading package lists... Done
>> Building dependency tree      
>> Reading state information... Done
>> Calculating upgrade... Done
>> 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

>> 3.) Can you check if pvr module is correctly installed?
>> After the boot perform: lsmod | grep omapdrm_prv
>> If this module is not loaded you might need to execute:
>> sudo apt-get install --reinstall pvr-omap4-dkms

>> Even though I did "apt-get install --reinstall pvr-omap4-dkms"
>> previously, I still don't see "omapdrm_prv" now on reboot.  I installed it
>> again just now and rebooted - it did not show under lsmod until after I ran
>> "startx".  Apparently I will always need to startx first.

>> Yes, omapdrm_prv is automatically loaded only after you startx, this is
>> expected.

>> 4.) Can you ensure that you are running the last kernel? Please send
>> "uname -a" output.

>> root@localhost:~# uname -a
>> Linux localhost.localdomain 3.4.0-1487-omap4 #6-Ubuntu SMP PREEMPT Mon
>> Oct 1 16:54:59 UTC 2012 armv7l armv7l armv7l GNU/Linux

>> OK.

>> 5.) Why are you using omapdss.def_disp=dvi in your bootargs?

>> I saw this on http://omappedia.org/wiki/Bootargs_for_enabling_displayand added it since neither HDMI nor DVI were providing signal without it.  
>> Maybe the situation is different because I am using a core image and not a
>> desktop one?

>> When booting Ubuntu Core, you shall see a console on HDMI or DVI after
>> the boot. You shall not specify omapdss_def and you shall add splash to the
>> bootargs.

>> 6.) Are you sure about your pipeline?  Here is an example of pipeline
>> supposed to work:
>> Example of VTC (videoconference) e.g. V4L2 USB webcam + preview + H264
>> encode + H264 decode + display, using V4L2, DRI2 and PVR.
>> gst-launch -v v4l2src ! "video/x-raw-yuv, framerate=(fraction)30/1" !
>> stridetransform ! tee name=t \
>> t. ! queue ! dri2videosink sync=false \
>> t. ! queue ! ducatih264enc rate-preset=low-delay profile=100 ! h264parse
>> ! ducatih264dec ! queue ! pvrvideosink sync=false

>> So I did a reboot, startx, export DISPLAY=:0, checked lsmod again for
>> "omapdrm_prv", and ran the pipeline you provided:

>> root@localhost:~# ./gst.sh
>> Setting pipeline to PAUSED ...
>> PVR:(Warning): PVRSRVOpenDCDevice: Warning - 138 returned [80,
>> /bridged_pvr_dc_glue.c]
>> PVR:(Warning): PVRSRVOpenDCDevice: Warning - 138 returned [80,
>> /bridged_pvr_dc_glue.c]
>> libdce-x11.c:64:        dce_auth_x11    info: attempting to open X11
>> connection
>> libdce.c:459:   init    error: could not get plugin ioctl base: -22
>> ERROR: Pipeline doesn't want to pause.
>> Setting pipeline to NULL ...
>> PVR:(Warning): PVRDRMSetFD: DRM fd already set [57, /pvr_bridge_u.c]
>> Freeing pipeline ...

>> It looks correct, messages are normal ones.

>> 7.) Why are you using root user?

>> The Ubuntu core image drops you right into root.

>> OK, this explains why...

>> 8.) Which kind of image are you using, desktop one?

>> This one: wget
>> http://cdimage.ubuntu.com/ubuntu-core/releases/12.04/release/ubuntu-c...

>> Many thanks!

>> Jared Beckwith

>> On Friday, November 9, 2012 12:54:02 AM UTC-8, Xavier Boudet wrote:

>>>  Hello JB,

>>> So you are using TI PPA, correct?
>>> Can you ensure that you perform dist-upgrade? We indeed have renamed
>>> some packages so aptitude needs that you perform dist-upgrade to replace
>>> existing package with new ones.

>>> Can you check if pvr module is correctly installed?
>>> After the boot perform: lsmod | grep omapdrm_prv
>>> If this module is not loaded you might need to execute:
>>> sudo apt-get install --reinstall pvr-omap4-dkms

>>> Can you ensure that you are running the last kernel? Please send "uname
>>> -a" output.

>>> Why are you using omapdss.def_disp=dvi in your bootargs?

>>> Are you sure about your pipeline, why are you using root user? Which
>>> kind of image are you using, desktop one?
>>> Her is an example of pipeline supposed to work:
>>> Example of VTC (videoconference) e.g. V4L2 USB webcam + preview + H264
>>> encode + H264 decode + display, using V4L2, DRI2 and PVR.
>>> gst-launch -v v4l2src ! "video/x-raw-yuv, framerate=(fraction)30/1" !
>>> stridetransform ! tee name=t \
>>> t. ! queue ! dri2videosink sync=false \
>>> t. ! queue ! ducatih264enc rate-preset=low-delay profile=100 ! h264parse
>>> ! ducatih264dec ! queue ! pvrvideosink sync=false

>>> Regards, Xavier Boudet
>>> On 11/09/2012 02:32 AM, JB wrote:

>>> I've done an apt-get update, apt-get upgrade, so I think I have the
>>> latest from the TI PPA.  I get the same error you were getting...

>>> root@localhost:~# gst-launch -v v4l2src device=/dev/video0
>>> num-buffers=200 ! "video/x-raw-yuv,width=640,height=480,framerate=30/1" !
>>> queue ! ffmpegcolorspace ! ducatih264enc ! h264parse ! queue ! qtmux !
>>> filesink location=sample.mp4
>>> Setting pipeline to PAUSED ...
>>> libdce-x11.c:64:    dce_auth_x11    info: attempting to open X11
>>> connection
>>> libdce.c:459:    init    error: could not get plugin ioctl base: -22
>>> ERROR: Pipeline doesn't want to pause.
>>> Setting pipeline to NULL ...
>>> Freeing pipeline ...

>>> How did you end up fixing this?

>>> My bootargs are:

>>> setenv bootargs quiet rw fixrtc mem=1G@0x80000000 root=/dev/mmcblk0p2
>>> console=ttyO2,115200n8 omapdss.def_disp=dvi rootwait ip=dhcp

>>> JB

>>> On Wednesday, September 5, 2012 2:45:26 AM UTC-7, fang bao wrote:

>>>> Hi Boudet,

>>>> I encountered some issues after updating to TI OMAP Release PPA Update
>>>> September 2012.

>>>> 1. HW MM h/w acceleration doesn't work.

>>>> When running the totem to play a H264 1080p stream, there is an error:

>>>> libdce.c: 437: init info: attempting to open X11 connection
>>>> libdce.c: 515: init error: could not get plugin ioctl base: -22

>>>> I have filed a bug here:
>>>> https://bugs.launchpad.net/ubuntu-omap4-extras-multimedia/+bug/1046226
>>>> 2. System hangs on booting.

>>>> The system often hangs on booting with black window.  After several
>>>> reboot, it might be OK. But it will hang next time.
>>>> I didn't know where to file this bug.

>>>> Regards,

>>>> Fang Bao

>>>> On Tuesday, September 4, 2012 8:25:09 PM UTC+8, Boudet, Xavier wrote:

>>>>> Hi there,

>>>>>  A major update has been done on TI PPA. Please read the below e-mail
>>>>> especially for upgrade.
>>>>> If you do not have installed the TI release PPA, please refer to New
>>>>> installation procedure.

>>>>>  *New installation procedure:*
>>>>>   1- Add TI OMAP release PPA:
>>>>>     $ sudo su -
>>>>>     # export http_proxy=<your proxy if any>
>>>>>     # export https_proxy=<your proxy if any>
>>>>>     # add-apt-repository ppa:tiomap-dev/release
>>>>>   2- Perform the upgrade:
>>>>>     $ sudo apt-get update
>>>>>     $ sudo apt-get dist-upgrade
>>>>>     $ sudo apt-get install ubuntu-omap4-extras
>>>>>   3- You can re-run a dist-upgrade for safety at the end, then reboot

>>>>>  *Update procedure:*
>>>>>  1- Perform the upgrade:
>>>>>     $ sudo apt-get update
>>>>>     $ sudo apt-get dist-upgrade

>>>>>  *Post Installation Important Information:*
>>>>> * after the installation/update, it is advised to log as default user
>>>>> and to execute:
>>>>>     # On Panda 4430:  
>>>>>     $ /usr/bin/alsaucm -c Panda set _verb HiFi
>>>>>     # On PandaES 4460:
>>>>>     $ /usr/bin/alsaucm -c PandaES set _verb HiFi

>>>>>  * You need to force installation of new bootloaders through command:
>>>>>     $ sudo /usr/sbin/flash-kernel --update-bootloader

>>>>>  * It is advised to use Ubuntu 2D instead of Ubuntu (3D) default UI.
>>>>> Nevertheless, main compiz issues have been fixed.

>>>>>  * In some cases, you might need to re-install dkms packages: after
>>>>> reboot,  check if omapdrm_pvr module is loaded, if not execute following
>>>>> command before to reboot:
>>>>>     $ sudo apt-get install --reinstall pvr-omap4-dkms

>>>>>  *New/Fixed in August 2012 release:*
>>>>>  * Kernel bug fixes:

>>>>> - SmartReflex Class 1.5 enabled with stability patches
>>>>> - IVAHD Power management (turning off IVAHD in between frames)
>>>>> - Temperature sensor fix
>>>>> - Add ARM HW ERRATA 743622, 751472 and 742230, PL310: 769419, OMAP:
>>>>> i659, i608, i705.
>>>>> - upstream patches + bug fixes:  suspend and wake-up
>>>>> fixes, reduced/fixed timer interrupt occurrences (twd)

>>>>>   * H264 and MPEG4 video encoder. No camera support yet but Support
>>>>> for combo use-cases such as: v4l2 usb camera -> preview -> encode -> decode
>>>>> -> display.
>>>>>    Below is an example of VTC (videoconference) e.g. V4L2 USB webcam +
>>>>> preview + encode + decode + display, using V4L2, DRI2 and PVR.
>>>>>      gst-launch -v v4l2src ! stridetransform ! queue ! tee name=t \
>>>>>      t. ! queue ! dri2videosink sync=false \
>>>>>      t. ! queue ! ducatih264enc rate-preset=low-delay profile=100 !
>>>>> h264parse ! ducatih264dec ! queue ! pvrvideosink sync=false
>>>>>  * Decoder issues Fixes.
>>>>>  * Xrandr Rotation Fixes.

>>>>>  *Known Issues:*
>>>>> * BT is not supported
>>>>> * Black screen issue on some HW - workaround: boot with screen
>>>>> un-plugged, plug it after 1 minute. Issue under investigation.

>>>>>  *Support:*
>>>>> You can report issues on Launchpad directly, use
>>>>> https://bugs.launchpad.net/ubuntu-omap4-extras-multimedia or
>>>>> https://bugs.launchpad.net/ubuntu-omap4-extras-graphics. We will push
>>>>> updates for bug fixes in the PPA, so make sure to keep your system
>>>>> up-to-date!

>>>>>  *Reference/Reminder:*

>>>>>  The 'top-level' ubuntu-omap-extras will install the following
>>>>> packages:
>>>>>  - ubuntu-omap-extras-multimedia: another meta package that installs
>>>>> all the requires packages for MM use case:
>>>>>    * GST, a modified version still compatible with all Ubuntu apps
>>>>> such as totem
>>>>>    * gst-ducati and libDCE the main components that bring MM h/w
>>>>> acceleration into the system
>>>>>  - ubuntu-omap-extras-graphics: meta package that pulls in all GFX
>>>>> components including new X11 driver (binary blob) and SGX kernel module
>>>>> (source using DKMS to build)
>>>>>  - ubuntu-omap-extras-config: some config scripts to set some
>>>>> permission issues, and to ensure that the Ducati firmware is loaded at boot
>>>>> time by upstart.

>>>>>  This release comes with the following major changes:
>>>>>  - DCE interface for the h/w accelerated codecs - already there in
>>>>> 11.10
>>>>>  - migration to rpmsg driver (aka syslink3, see
>>>>> http://lwn.net/Articles/448562/ and
>>>>> http://omappedia.org/wiki/Category:RPMsg)
>>>>>  - DRI2 extension for Video support (
>>>>> http://www.phoronix.com/scan.php?page=news_item&px=OTgxOQ)
>>>>>  - migration to a new open source X11 driver for OMAP (
>>>>> http://cgit.freedesktop.org/xorg/driver/xf86-video-omap/ )
>>>>>  - a new GST video-sink: dri2videosink to display video through the
>>>>> SGX (instead of v4l2sink). For more information, see
>>>>> https://wiki.linaro.org/OfficeofCTO/MemoryManagement?action=AttachFil...
>>>>>  - Linux 3.4 kernel, Ubuntu kernel will be replaced. This kernel is
>>>>> largely based of Linaro kernel, and sources are available here:
>>>>> http://dev.omapzoom.org/?p=integration/kernel-ubuntu.git.
>>>>> Linux-image-<version> package version correspond to a tag ti-ubuntu-<kernel
>>>>> version>  in this tree.
>>>>>  - ...

>>>>>  Regards,

>>>>>  *Xavier Boudet*