GPU hang on iris Plus driver

[fsedano]

Getting frequent GPU hangs on Iris plus driver, with Ubuntu 20:

ontext: OpenGL 4.6 compatibility profile
    GL_VENDOR                   = Intel
    GL_RENDERER                 = Mesa Intel(R) Iris(R) Plus Graphics 655 (CFL GT3)
    GL_VERSION                  = 4.6 (Core Profile) Mesa 20.2.6
    GL_SHADING_LANGUAGE_VERSION = 4.60
    Initial GL error code       = 0
    GL_ARB_gpu_shader_int64     = supported

Dmesg:

[  249.432427] i915 0000:00:02.0: [drm] Resetting rcs0 for preemption time out
[  249.432440] i915 0000:00:02.0: [drm] glscopeclient[2070] context reset due to GPU hang
[  249.442335] i915 0000:00:02.0: [drm] GPU HANG: ecode 9:1:8ed8fff3, in glscopeclient [2070]

Demo at:
gpu hang

Capture of the hang:

https://cisco.box.com/s/frr2mo8sww7yq79csewltegc4y2rfz5k

[azonenberg]

Suspect it's related to #327 but keeping this ticket open until we've confirmed that's the case.

[azonenberg]

Fixed by ngscopeclient/scopehal#450

[fsedano]

Hi - This happened again even after the fix. Something else is going on. Same signature...

[mandl]

Hello Team,

same on my Ubuntu 20.

Context: OpenGL 4.6 compatibility profile
GL_VENDOR = Intel
GL_RENDERER = Mesa Intel(R) UHD Graphics (CML GT2)
GL_VERSION = 4.6 (Core Profile) Mesa 21.0.3
GL_SHADING_LANGUAGE_VERSION = 4.60
Initial GL error code = 0
GL_ARB_gpu_shader_int64 = supported
Requested rendering backend: OpenGL
Using rendering backend: OpenGL

[ 2169.694889] i915 0000:00:02.0: [drm] Resetting rcs0 for preemption time out
[ 2169.694914] i915 0000:00:02.0: [drm] glscopeclient[9966] context reset due to GPU hang
[ 2169.700445] i915 0000:00:02.0: [drm] GPU HANG: ecode 9:1:8ed8fff3, in glscopeclient [9966]

[mandl]

Workaround - use the old driver

MESA_LOADER_DRIVER_OVERRIDE=i965 glscopeclient

https://linuxreviews.org/Intel_Iris

[azonenberg]

Is anyone still seeing this issue with recent builds and/or ngscopeclient?

[smunaut]

FWIW:

[9485860.755044] i915 0000:00:02.0: GPU HANG: ecode 7:1:0xfefffffe, in ngscopeclient [13528], hang on rcs0
[9485860.755087] i915 0000:00:02.0: Resetting chip for hang on rcs0

But it's on a Haswell with incomplete vulkan support.

[azonenberg]

Has anyone seen Intel driver issues with a relatively recent build? I know we fixed some shader bugs over the summer. Would like to close this if it's not still happening.

[smunaut]

It's still there, just reproduced it instantly in a build of master right now.
Running on intel 12th gen iGPU with Mesa 23.3.0