Raspberry Pi 4 Model B

alan_g

@Pulsar33 it should be in the Ctrl+Alt+F7. unity8 is by default already running in background. you can prove that by typing in the console
start unity8
Also you can restart it with
restart unity8
The problem is that it doesn't seem to work properly because of the mesa-kms missing support in the raspberrypi4 as you can see above
(EGL platform does not support EGL_KHR_platform_gbm extension, Failed to detect whether device /dev/dri/card1 and card2 supports KMS and Couldn't get DRM resources for an Invalid argument)

If that's how you are starting Unity8, then setting the environment variable needs to be done in the launch scripts, not in your terminal session. (Sorry, I don't know enough about how your image is set up to know where these scripts are.)

Aury88

@alan_g i didn't set that variable throught the terminal session but by editing /etc/environment and ~/.bashrc files

alan_g

@Aury88 it might help others help you if you pastebin the Unity8 log.

Pulsar33

@alan_g : Hello
I would be glad to pastebin it but I don't know where to find it. The only relevant logs I have are :

pulsar33@Minerve:/media/pulsar33/root/var/log$ ls -alR | grep oct.
-rw-r--r-- 1 root root             979 oct.  20 21:00 .log20191020-185955.2080
-rw-r----- 1 root root               20 oct.  20 20:59 biometryd.log
-rw-r----- 1 root root              153 oct.  20 20:59 hwclock-save.log
-rw-r----- 1 root root               32 oct.  20 20:59 lightdm.log
-rw-r----- 1 root root               22 oct.  20 20:59 udev.log
-rw-r----- 1 root root               12 oct.  20 20:59 urfkill.log

And here is all what they contain :

pulsar33@Minerve:/media/pulsar33/root/var/log/upstart$ sudo cat biometryd.log 
Terminated
Killed
pulsar33@Minerve:/media/pulsar33/root/var/log/upstart$ sudo cat urfkill.log 
Terminated
pulsar33@Minerve:/media/pulsar33/root/var/log/upstart$ sudo cat lightdm.log 
Failed to get D-Bus connection
pulsar33@Minerve:/media/pulsar33/root/var/log/upstart$ sudo cat udev.log 
starting version 229
pulsar33@Minerve:/media/pulsar33/root/var/log/upstart$ sudo cat hwclock-save.log 
hwclock: Cannot access the Hardware Clock via any known method.
hwclock: Use the --debug option to see the details of our search for an access method.
pulsar33@Minerve:/media/pulsar33/root/var/log/upstart$ sudo cat system-watchdog.log 
touch: cannot touch '/userdata/.last_watchdog_reboot': No such file or directory
touch: cannot touch '/userdata/.last_watchdog_reboot': No such file or directory
touch: cannot touch '/userdata/.last_watchdog_reboot': No such file or directory
touch: cannot touch '/userdata/.last_watchdog_reboot': No such file or directory
touch: cannot touch '/userdata/.last_watchdog_reboot': No such file or directory
pulsar33@Minerve:/media/pulsar33/root/var/log/upstart$ cd ../ubuntu-download-manager/
pulsar33@Minerve:/media/pulsar33/root/var/log/ubuntu-download-manager$ cat .log20191020-185955.2080 
Log file created at: 2019/10/20 18:59:55
Running on machine: ubuntu-phablet
Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg
I1020 18:59:55.082846  2080 base_daemon.cpp:204] Timeout is enabled: 1
I1020 18:59:55.083389  2080 base_daemon.cpp:206] Daemon is stoppable: 0
I1020 18:59:55.087118  2080 downloads_db.cpp:151] Db file is  /var/cache/ubuntu-download-manager/downloads.db
I1020 18:59:55.126965  2080 network_session.cpp:100] Instance is null
I1020 18:59:55.127024  2080 network_session.cpp:103] Create new instance
I1020 18:59:55.222091  2080 network_session.cpp:68] Connection type 802-3-ethernet
I1020 18:59:55.222759  2080 manager.cpp:113] virtual void Ubuntu::DownloadManager::Daemon::DownloadManager::setAcceptedCertificates(const QList<QSslCertificate>&)
I1020 18:59:55.223557  2080 base_daemon.cpp:122] Service registered to com.canonical.applications.Downloader
I1020 19:00:25.228682  2080 base_daemon.cpp:152] Timeout reached, shutdown service.

Not so useful I guess
BR
Pulsar33

Aury88

@alan_g
Hi Alan!
The unity8 log pastebin was already linked in the first post of this thread. Sorry I thought that it was convenient to put it there. Here the link to the unity8 log pastebin.

@Pulsar33 for the unity8 log you have to do this:

cat /.cache/upstart/unity8.log

Pulsar33

Sorry, I miss that all logs in /home/phablet/.cache where not seen.
Same log as you ...
Pulsar33

alan_g

@Aury88 sorry, I didn't read the whole thread, just from the point you pinged me.

That log isn't related to https://github.com/MirServer/mir/issues/704 where one of the DRM functions returns a misleading result. Instead it looks like the graphics driver isn't adequately supported by Mesa.

I know that my colleagues at Canonical have yet to get graphics working on the Pi4 with Ubuntu Core (I think that's lack of time, not a technical issue). But maybe you can find something useful here: https://forum.snapcraft.io/t/support-for-raspberry-pi-4/11970

For example:

you might need to play with the dtoverlay= kms or fkms values in config.txt. i know the vc4 driver isnt fully ready to drive the vc5 hardware in the pi4 but i know that for example my omxplayer-pi snap works fine (only 1080p though, omxplayer does not support h265 yet) when either using no dtoverlay or with the fkms one (not with the kms one though). - https://forum.snapcraft.io/t/support-for-raspberry-pi-4/11970/17

Aury88

@alan_g thank you.! I will try that.

Pulsar33

Hello
Don't know what to do.
And you ?
BR
Pulsar33

Aury88

No @Pulsar33, we mortals are all stuck with the compositor error. also I can access only the first time to the session. it asks to set a name to the device but in the following boots, after login (with phablet or the chosen name is the same) it start a wrongly orientated login interface without keyboard recognition and the impossibility to use the virtual keyboard due to the compositor problem.... also I am not able to access the console mode

Pulsar33

Thank you for the answer
Is your build the last successful one #44 created today ?
I can't test it before a few days but I will asap
BR
Pulsar33

Aury88

@Pulsar33 yes. the #44 have a working GUI (but still not the compositor).

Aury88

Warning!: the last rootfs-rpi build (#51) has not the GUI.
Here the cat /.cache/upstart/unity8.log pastebin

Pulsar33

Hello,

Things are moving on the raspberrypi.org forum. An Ubuntu sub-forum has been open in Operating System distributions / Other and an old thread about Unity has been updated. A few members are posting.

BR
Pulsar33

Aury88

@Pulsar33 to me it seems more like throwing a stone in the pond and then shouting "there is movement !!"
but that was a right move...maybe someone from there can help us port UT on RPI.
here the situation has stopped (not to say worsened since we lost the GUI operation ...and we don't know why )

nanu-c

This post is deleted!

Mark

I know this is about the Raspberry Pi 4 but if any of you, frustrated with the lack of progress, have a Raspberry Pi 3 you may want to try that as it is working reasonably well but with bugs that could do with some attention. Solving them should, in many cases, also help with the Pi 4 once the (compositor?) bug is fixed. Some of the existing UT apps have been recompiled for arm64 so we have working file manager and UT Tweak amongst others. The Telegram group has instructions to add Swap which makes life a lot easier.

Mark

@Mark Brian Douglas now has an experimental open store for multi arch which worked well for me on the Pi. The Telegram UBports Raspberry Pi group is a good place to follow progress.

alan_g

@alan_g said in Raspberry Pi 4 Model B:

I know that my colleagues at Canonical have yet to get graphics working on the Pi4 with Ubuntu Core (I think that's lack of time, not a technical issue)

Update: I just read the phrase "note: this fixes mir-kiosk support !" on this snapcraft thread about the Pi4:

https://forum.snapcraft.io/t/support-for-raspberry-pi-4/11970/37

That implies a kernel which works with Mir graphics and therefore can support Unity8.

Pulsar33

This post is deleted!