https://bugs.freedesktop.org/show_bug.cgi?id=106285

Bug ID: 106285 Summary: Multiple Xorg restarts leads to `Surface: can not attach plane_state` (raven ridge) Product: DRI Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: ojab@ojab.ru

Raven ridge APU (2400g), no external GPU, linux-4.17-rc2, libdrm-2.4.91, mesa-18.1.0-rc1, xorg-server-1.19.6, xf86-video-amdgpu-18.0.1.

So I've tried to reproduce https://bugs.freedesktop.org/show_bug.cgi?id=106276 using simple script: ``` #!/bin/sh set -ex while true; do set -x X& XPID=$! sleep 1 kill ${XPID} sleep 1 done ```

and ended up with screen showing nothing (i. e. backlight enabled, but all image is black) in both console & X. dmesg is full of [Fri Apr 27 16:17:33 2018] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Surface: can not attach plane_state 00000000a97ad24a! Maximum is: 4 [Fri Apr 27 16:17:33 2018] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Surface: can not attach plane_state 00000000d38d9362! Maximum is: 4 [Fri Apr 27 16:17:33 2018] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Surface: can not attach plane_state 00000000d38d9362! Maximum is: 4 [Fri Apr 27 16:17:33 2018] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Surface: can not attach plane_state 00000000d38d9362! Maximum is: 4 [Fri Apr 27 16:18:01 2018] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Surface: can not attach plane_state 00000000b7ff318d! Maximum is: 4 [Fri Apr 27 16:18:04 2018] [drm:dc_add_plane_to_context [amdgpu]] *ERROR* Surface: can not attach plane_state 00000000b7ff318d! Maximum is: 4