canonical-ci-engineering team mailing list archive

[Dimitri John Ledkov <xnox@xxxxxxxxxx>]

On 24 July 2014 12:07, Evan Dandrea <evan.dandrea@xxxxxxxxxxxxx> wrote:
> Yesterday I got a request from the SDK team to help them set up some
> automated testing by October. As one might imagine, this requires a
> phone or the emulator:
>
> https://docs.google.com/a/canonical.com/document/d/1D7J8TgxqDBpuilE8z1EGtUF4OK_kGQm39DodzVbbOKY/edit?usp=drive_web
>
> I've directed us down the path of running the emulator on top of bare
> metal, provisioned using MAAS and Juju, because nested kvm has been
> problematic in the past. This came with the backing of IS.
>
> Still, the more requests I get for services that would require either
> nested kvm or a more complex setup, the more I want to see for myself
> how much of a problem it really is. So in the background last night I
> started to investigate.
>
> After some false starts with the wrong emulator package¹, I managed to
> piece together the following:
> sudo add-apt-respository ppa:phablet-team/tools # for the correct
> emulator package and phablet-tools
> sudo apt-get install bzr ubuntu-emulator xvfb
> sudo ubuntu-emulator create --arch=i386 myinstance
> xvfb-run ubuntu-emulator run --memory=1024 myinstance
>

You want to make xvfb-run to give you more pixels and higher color
depth than the default 800x600x8bit. And instead use something
sensible, cause low color depth is not enough for GL to work.


> Unfortunately this isn't enough to get a working environment:
> buntu@juju-lcy-machine-0:~$ LIBGL_DEBUG=verbose xvfb-run glxinfo
> name of display: :99
> libGL: screen 0 does not appear to be DRI3 capable
> libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/tls/swrast_dri.so
> libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/swrast_dri.so
> libGL: driver does not expose __driDriverGetExtensions_swrast():
> /usr/lib/i386-linux-gnu/dri/swrast_dri.so: undefined symbol:
> __driDriverGetExtensions_swrast
> libGL: Can't open configuration file /home/ubuntu/.drirc: No such file
> or directory.
> libGL: Can't open configuration file /home/ubuntu/.drirc: No such file
> or directory.
> libGL error: failed to load driver: swrast
> Error: couldn't find RGB GLX visual or fbconfig
> Error: couldn't find RGB GLX visual or fbconfig
>
> Dimitri and I tried to work through this a bit. Thinking it was due to
> missing GL packages, I installed the ubuntu-desktop metapackage. This
> didn't help.
>
> So that's where we're at. It looks like nested kvm might work after
> all, but we now have a problem getting gallium and llvmpipe to step in
> and provide software-based 3D rendering.
>
> ¹ https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1347737



-- 
Regards,

Dimitri.