[Bug 104611] [fiji, polaris10] BUG: unable to handle kernel NULL pointer dereference when waking up displays with amdgpu.dc=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104611

--- Comment #11 from Kevin Hamacher <kevin at hamacher.cc> ---
I'm also affected by this.
Setup:
 GPUs: RX 580 (used), R9 Fury
 Screens: 3xU2415, connected via DP. 2 of them connected via MST, 1 HDMI to
disabled screen, 1 HDMI to Oculus Rift VR
 Linux x7 5.0.7-arch1-1-ARCH #1 SMP PREEMPT Mon Apr 8 10:37:08 UTC 2019 x86_64
GNU/Linux
 Window manager: i3 4.16.1

Crashes when disabling + enabling the secondary screen on MST.
Under some conditions the screen is not detected properly (instead of crashing
the system) and powercycling the primary MST screen will crash the system.
(Primary MST screen: The one plugged into the GPU, secondary: plugged into the
primary screen)


dmesg: https://bugs.freedesktop.org/attachment.cgi?id=144079&action=edit (with
dc_log=1 but it seems like it was removed?)
[   27.292118] amdgpu: unknown parameter 'dc_log' ignored

@51.6 I've disabled the secondary MST screen, the crash a couple of seconds
later is when turning it back on.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20190423/aa915fc7/attachment.html>