Unusual graphics behaviour on intel arc, Linux

[blarp123]

Weird issue where everything appears in shadow. Fixes itself when changing the shadow quality while in game. Works after that until the app is restarted. 

OS: Kubuntu 26.04.1

GPU: Intel Arc B580

CPU: AMD Ryzen 5 5500

 

The video is av1 hope that isn't an issue. Didn't want to send a massive file.

[Asher]

Interesting... I think something like that happened to me when playing ponies ascent when using siege weapons. I'm not sure how to fix it though

[Stan`]

I think you might be running out of VRAM.

[hyperion]

What is the kernel version and mesa version? Asking because the Xe driver is still quite new. Also can you consistently reproduce it or was that a one off? Also is it limited to one of opengl or vulkan?

[vladislavbelov]

Could you attach mainlog.html (from the logs folder) with such artifact?

[blarp123]

Kernel: 7.2 generic

Mesa: 26.0.8-1ubuntu0.3

Not out of vram, nvtop shows usage at about 20% (I have 12gb). Happens every time I play the game. Shadows issue is on Vulkan. If I use OpenGL it is completely broken, black screen. This might be an issue with intel arc or it's drivers not 0ad, OpenGL is sometimes hit or miss on arc. OpenGL Arb works perfectly though. 

 

I also tried running with OpenGL through zink vulkan to see if it changed anything and it didn't, so I don't think that's arc opengl issue usually zink fixes those. The opengl log I sent is not with zink.

 

Minecraft, SuperTuxKart, Steam games like Crossout all work perfectly so I don't think there's anything significantly wrong with my drivers.

mainlog_(vulkan).html mainlog_(arb).html mainlog_(opengl).html

Edited September 7 by blarp123

[blarp123]

Ok so I figured out the OpenGL thing is just some weird 1-off issue. I installed the game again with Flatpak (previously was apt ubunto repo) and the black screen was fixed. But still broken shadows on vulkan. 

[vladislavbelov]

5 hours ago, blarp123 said:

But still broken shadows on vulkan. 

Could you add the following lines to your user.cfg (might be removed later) and attach mainlog.html and userreport_hwdetect.txt after run with it?

renderer.backend.debugcontext = "true"
renderer.backend.debugmessages = "true"
renderer.backend.debuglabels = "true"
renderer.backend.debugscopedlabels = "true"

Also is the problem reproducible when all other settings are disabled?

[blarp123]

Yes it still happens when all other settings are disabled. Here's the log with the flags you gave. 

 

mainlog.html userreport_hwdetect.txt

Edited Monday at 22:48 by blarp123

[vladislavbelov]

11 minutes ago, blarp123 said:

Yes it still happens when all other settings are disabled.

Hmm. If change the shadow quality to high and restart, does the problem happen? Also if switch to Very High after a start with High does the problem happen?

Also could you add the following line to your user.cfg?

renderer.backend.vulkan.disabledescriptorindexing = "true"

 

[blarp123]

Sorry for the long reply. 

 

Issue is the same regardless of which shadow quality I start with. Adding the line you gave fixed it completely. I attached the log with it fixed. Thanks!

mainlog.html