[Bug 105018] Kernel panic when waking up after screen goes blank.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105018

--- Comment #32 from L.S.S. <ragnaros39216 at yandex.com> ---
So it seems there definitely is a regression on 4.17 on this issue (the patches
are not required as the lines were already there in 4.17). This time it isn't a
kernel panic, but an "invalid opcode" error caused by dm_update_crtcs_state
that was called by amdgpu_dm_atomic_check.

The issue is not 100% reproducible, but still means going to standby with an
AMD GPU and DC is still dangerous and may result in losses of unsaved work.

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