Created attachment 210661 [details] Xorg log With 4.4.6, I noticed I cannot use the xf86-video-amdgpu ddx anymore. When the X server starts, the screen will go black, in the log, there is a message telling me that the device initialization failed. I can't get the console back either, but emergency sync, ro remount and poweroff do work. Before starting X, the driver seems to work fine, only when starting X things go wrong. The issue is present with 4.5.0 as well. Will upload a Xorg log, but it won't be much of a help, because it seems to be cut off, even though I waited for a long time before sync and unmount. Also tried to capture dmesg, but got only a partial one as well which was cut off before things got interesting. bisect led to (on the 4.4.y branch): a46a700abc520bfadf5fa1cc371ba07d6d7f9230 is the first bad commit commit a46a700abc520bfadf5fa1cc371ba07d6d7f9230 Author: Christian König <christian.koenig@amd.com> Date: Fri Feb 26 16:18:15 2016 +0100 drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well ···· commit feebe91aa9a9d99d9ec157612a614fadb79beb99 upstream. ···· We never ported that back to CIK, so we could run into VM faults here. ···· Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> :040000 040000 3930bee60c2e64b348ee8e5f618326b5f6141cdc 8501edda2a7d8ee201cde839ac01d943bec84a51 M drivers Reverting that commit on top of 4.4.6 (or the corresponding one on top of 4.5.0) gets things working again.
Created attachment 210671 [details] fix for 4.5 The fix for 4.5 has already gone to stable, it just hasn't been applied yet. 4.6 is not affected.
Thanks, that works.
Ping. Was this forgotten? Afaics, it's still not applied to 4.5 stable (in 4.5.2).
Greg still hasn't applied it.
Fixed with v4.5.3 or more specific commit a287c7.