Comment # 17
on bug 107045
from Andrey Grodzovsky
(In reply to taijian from comment #15) > Created attachment 140733 [details] > dmesg output 4.18rc5 + drm-fixes-2018-07-20 > > OK, so I have some new, probably interesting dmesg output with the latest > mainline build. > > What's happening here is that the system boots up, then my background > display brightness service goes to work (see here: > https://github.com/FedeDP/Clight and here: > https://github.com/FedeDP/Clightd) and tries to adjust screen brightness. > This leads to a number of > > RIP: 0010:dm_dp_aux_transfer+0xa5/0xb0 [amdgpu] > > trace calls and then the system freeezes completely. And I mean completely, > as in not even sysrq + REISUB does anything. Does this help in any way? So i tried with kernel 4.18 rc.1 from here - https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next and 2 cards Provider 0: id: 0x81 cap: 0x9, Source Output, Sink Offload crtcs: 5 outputs: 3 associated providers: 1 name:AMD Radeon (TM) RX 460 Graphics @ pci:0000:0b:00.0 Provider 1: id: 0x49 cap: 0x6, Sink Output, Source Offload crtcs: 6 outputs: 4 associated providers: 1 name:AMD Radeon (TM) RX 480 Graphics @ pci:0000:08:00.0 Where RX 460 is the default and RX 480 is the secondary. I ran both glxgears and glxinfo multiple time with DRI_PRIME=1 and haven't observed any issues. >From the log I see GPU pci config reset print - where does it come from ? Did you trigger PCI reset for the device manually or did it happen once you tried to run any application with DRI_PRIME=1 ? Which device is 0000:01:00.0 - primary or secondary ?
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