Hi! For a while now I've been having issues with my HP EliteDesk 705 G2 mini PC[1]. If I open up e.g. dolphin or konsole when in kde plasma 5.6.4, the screen corrupts and locks up, and this appears in dmesg: juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: GPU fault detected: 146 0x0842b714 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00101508 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0B0B7014 juni 17 22:50:42 hphtpc kernel: VM fault (0x14, vmid 5) at page 1053960, write from 'SDM0' (0x53444d30) (183) juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: GPU fault detected: 146 0x0842b714 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0010151F juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0B0B7014 juni 17 22:50:42 hphtpc kernel: VM fault (0x14, vmid 5) at page 1053983, write from 'SDM0' (0x53444d30) (183) juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: GPU fault detected: 146 0x0842b714 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00101508 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0B0B7014 juni 17 22:50:42 hphtpc kernel: VM fault (0x14, vmid 5) at page 1053960, write from 'SDM0' (0x53444d30) (183) juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: GPU fault detected: 146 0x0842b714 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0010151F juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0B0B7014 juni 17 22:50:42 hphtpc kernel: VM fault (0x14, vmid 5) at page 1053983, write from 'SDM0' (0x53444d30) (183) juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: GPU fault detected: 146 0x0842b714 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00101508 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0B0B7014 juni 17 22:50:42 hphtpc kernel: VM fault (0x14, vmid 5) at page 1053960, write from 'SDM0' (0x53444d30) (183) juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: GPU fault detected: 146 0x0842b714 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00101508 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0B0B7014 juni 17 22:50:42 hphtpc kernel: VM fault (0x14, vmid 5) at page 1053960, write from 'SDM0' (0x53444d30) (183) juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: GPU fault detected: 146 0x08e2b714 juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0010151E juni 17 22:50:42 hphtpc kernel: amdgpu 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0B0B7014 juni 17 22:50:42 hphtpc kernel: VM fault (0x14, vmid 5) at page 1053982, write from 'SDM0' (0x53444d30) (183) This didn't happen back with mesa-11.2.2 built against llvm 3.8.0, but that starts to be quite a lot of commits ago now, considering the development pace mesa's got at the moment. I tried out mesa and llvm from git and svn around when Bas Nieuwenhuizen posted those GL compute shaders for radeonsi patches[2], and I think that's when it was the first time I saw the bug. It seems that the bug appears no matter what kernel I try to use, I've been through countless iterations of drm-next-4.7 kernels and drm-fixes-4.6 kernels, but it seems to happen no matter what I use. The error message pasted above comes from gentoo provided 4.6.2-kernel: # uname -a Linux hphtpc 4.6.2-gentoo #2 SMP PREEMPT Mon Jun 13 21:27:32 CEST 2016 x86_64 AMD PRO A12-8800B R7, 12 Compute Cores 4C+8G AuthenticAMD GNU/Linux Am I at the right mailing list for this kind of bug? How can I debug this further? - Mads --------- [1] http://store.hp.com/us/en/PDPStdView?catalogId=10051&urlLangId=-1&langId=-1&productId=1086676&storeId=10151 [2] https://lists.freedesktop.org/archives/mesa-dev/2016-April/111638.html
