[Bug 201015] [amdgpu] BUG: unable to handle kernel NULL pointer dereference on resume with 2 monitors (vega)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201015

--- Comment #8 from Aleksandr Mezin (mezin.alexander at gmail.com) ---
Created attachment 278457
  --> https://bugzilla.kernel.org/attachment.cgi?id=278457&action=edit
kernel log: patched kernel + xorg modesetting, resume failed

Even with patched kernel, when resume fails there are errors in kernel log
(when using modesetting driver):

[   98.136982] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:43:crtc-0] flip_done timed out
[  103.668322] [drm:dc_remove_plane_from_context [amdgpu]] *ERROR* Existing
plane_state not found; failed to detach it!
[  103.702464] [drm:dc_remove_plane_from_context [amdgpu]] *ERROR* Existing
plane_state not found; failed to detach it!

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