[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #3 from Öyvind Saether <oyvinds@everdot.org> ---
(In reply to Michel Dänzer from comment #1)
> Can you bisect?
> P.S. FYI, this is what's called an oops, not a panic.

oops, then. yes I now know how to bisect. I can.

(In reply to Alex Deucher from comment #2)
> When you say turn them off/on, do you mean via software (e.g., dpms) or via
> the switch on the monitor?

I used the actual power button on the monitors that have them and the stupid
joystick thing on the third monitor (works like a button) when this first
happens but I just found that it doesn't matter, triggered it on 4.18.9 with
dpms too.

On 4.18.9:
> set xscreensaver to immediately turn monitors off with dpms
> lock screen
> wait for monitors go into suspend
> press button on keyboard
> monitors don't come back on, system freeze
will attach same-problem-4.18.9.txt with that one. 4.18.5 is fine. I notice
there was a lot of amdgpu changes between 4.18.7 and 4.18.8 in the log. I have
used 4.19 git kernels for some time and this didn't happen to me until 4.19rc4
but that could simply be because I didn't turn off the monitors(???). 

bisecting will take time.

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