https://bugs.freedesktop.org/show_bug.cgi?id=107045

--- Comment #15 from taijian@posteo.de ---
Created attachment 140733
  --> https://bugs.freedesktop.org/attachment.cgi?id=140733&action=edit
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?

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