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So i've been playing some games(specifically tabletop simulator and portal 2) and i noticed some shader artifacts(Link)
output of lspci -v:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV635/M86 [Mobility Radeon HD 3650] (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device 0121
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at f0200000 (64-bit, non-prefetchable) [size=64K]
I/O ports at 2000 [size=256]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
Kernel modules: radeon
i'm using the xf86-video-ati package as my driver
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Did you check gpu temperature under load?
grep . /sys/class/hwmon/hwmon*/temp1_input
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Did you check gpu temperature under load?
grep . /sys/class/hwmon/hwmon*/temp1_input
57000 on standby and 72000 under load of portal 2 with everything on lowest except resolution
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Do you play linux version of Portal 2 or windows version via wine?
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Do you play linux version of Portal 2 or windows version via wine?
linux through steam
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Mesa may render artifacts if opengl version is set too high.
I suggest you:
Check currently used version:
glxinfo -B
Downgrade to version 2.1 and test portal:
MESA_GL_VERSION_OVERRIDE=2.1 MESA_GLSL_VERSION_OVERRIDE=120 steam
Last edited by SyndromeDayna (2020-09-17 11:51:39)
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Mesa may render artifacts if opengl version is set too high.
I suggest you:
Check currently used version:
glxinfo -B
Downgrade to version 2.1 and test portal:
MESA_GL_VERSION_OVERRIDE=2.1 MESA_GLSL_VERSION_OVERRIDE=120 steam
Nope still artefacts
opengl related output of glxinfo -B
OpenGL vendor string: X.Org
OpenGL renderer string: AMD RV635 (DRM 2.50.0 / 5.8.8-arch1-1, LLVM 10.0.1)
OpenGL core profile version string: 3.3 (Core Profile) Mesa 20.1.7
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL version string: 3.0 Mesa 20.1.7
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 20.1.7
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
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Did you try video memory stress testing?
There is an application for windows called "video memory stress test". It's free and works through wine.
Last edited by SyndromeDayna (2020-09-18 03:00:22)
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Did you try video memory stress testing?
There is an application for windows called "video memory stress test". It's free and works through wine.
I ran a short test with it under wine,0 errors,also i have dualboot with windows so i fired up windows and ran portal 2 on it,no artefacts,and the memory test on windows 0 errors too,i think the problem is with the drivers or settings,the video card is fine
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