Bug#726317: [berusky2] Dark screen when in game

[Markus Koschany]

On 14.10.2013 18:17, 0 1 wrote:
> I can play OpenArena fine (just tried seconds ago). Note: not installed
> through the debian repository.
> 
> I have tried The Dark Mod recently (not in Debian repository), can't
> play it because it's all black and I can't get into the menu. From what
> I've read in that case, the issue could be related with S3TC texture
> compression, but enabling it didn't seem to help.

I was recently informed that you need the libtxc-dxtn0 package from the
unofficial Debian Multimedia repository to play the game because it
includes an extension for your video card which is restricted by
patents. However I can't verify that and don't recommend to use it.

> Now tried Sauerbraten from the repo, runs without any problem.
> 
> Package libgl1-mesa-dri 9.1.6-2+b1 is installed.
> 
> /proc/cpuinfo attached.
> Was identified as being that one:
> http://www.notebookcheck.net/Intel-HD-Graphics-Sandy-Bridge.56667.0.html
> 
> % dmesg | grep i915
> [    5.300119] i915 0000:00:02.0: setting latency timer to 64
> [    5.339784] i915 0000:00:02.0: irq 42 for MSI/MSI-X
> [    6.284499] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
> [    6.284502] i915 0000:00:02.0: registered panic notifier
> [    6.393541] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on
> minor 0
> [   15.311144] WARNING! The i915 invalidates all caches which increases
> the latency.
> [   15.311154] As a workaround use 'i915.do_wbinvd=no' and PIN each
> process doing <6>[   23.917528] IPv6: ADDRCONF(NETDEV_UP): wlan0: link
> is not ready

Thanks for your screenshots and your additional information. That's
indeed strange because I use the same i915 chipset and the game works.

Could you post the output of lspci -v | grep VGA ? There are multiple
sandybridge cards mentioned on this site but I need the exact model type
to investigate this issue further.

So my overall impression for now is that some OpenGL extensions don't
work with your specific video card and the game is thus misrendered on
your system.

Markus

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