Comment # 7
on bug 107065
from dwagner
(In reply to Andrey Grodzovsky from comment #6) > So with Arch Linux kernel it happens only during S3 but with > amd-staging-drm-next it happens once you start X ? Yes. I know it sounds strange, but it's currently 100% reproducible to me: Booting linux-4.17.2-ARCH with amdgpu.vm_update_mode=0: X11 starts fine, but system crashes after minutes of firefox browsing Booting linux-4.17.2-ARCH with amdgpu.vm_update_mode=3: X11 starts fine, system does not crash (for at least hours of use) but crashes as above if resumed from S3 sleep Booting linux compiled from amd-staging-drm-next, as of commit 527d6e839a0e52b744fd092453544e4f58977334 from yesterday, with amdgpu.vm_update_mode=0: X11 starts fine, but system crashes after minutes of firefox browsing Booting linux compiled from amd-staging-drm-next, as of commit 527d6e839a0e52b744fd092453544e4f58977334 from yesterday, with amdgpu.vm_update_mode=3: X11 does not start, crashes immediately with the same above pasted kernel BUG message and backtrace So something with CPU-based vm_update_mode is broken, but in a different way than the SDMA-based method. I will change the subject of this report to reflect that this crash is not necessarily S3-resume-related.
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