Comment # 8
on bug 97022
from Peter Mulholland
Created attachment 125261 [details]
Part of kern.log written during forcing a GPU reset
I've found that force resetting the GPU clears the corruption - using cat
/sys/kernel/debug/dri/0/radeon_gpu_reset
This does not take effect straight away however, I often have to kill Xorg
before it'll happen. There are some errors written to the kernel log - i have
attached those.
Here is lspci output for the card in case it's relevant:
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Cape Verde PRO [Radeon HD 7750/8740 / R7 250E] [1002:683f] (prog-if
00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Cape Verde PRO [Radeon HD 7750/8740 /
R7 250E] [1043:0427]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 26
Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 2: Memory at fde80000 (64-bit, non-prefetchable) [size=256K]
Region 4: I/O ports at de00 [size=256]
[virtual] Expansion ROM at fde00000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
Kernel modules: radeon
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