Bug 204365

Summary:	amdgpu crashes when using parameter "drm.edid_firmware"
Product:	Drivers	Reporter:	Felix Hädicke (felixhaedicke)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	NEW ---
Severity:	normal	CC:	alexdeucher, harry.wentland, nicholas.kazlauskas
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	5.2.4	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	dmesg log with amdgpu crash

Description Felix Hädicke 2019-07-29 14:21:22 UTC

Created attachment 284027 [details]
dmesg log with amdgpu crash

As a workaround for the problem described in bug 204363, I am using the parameter "drm.edid_firmware" parameter to override the EDID.

This EDID seems to work fine, if I log in to my desktop (GNOME 3.32 unter X.org) before plugging in the HDMI cable to the projector. But when the HDMI cable is plugged in during boot, or when launching Wayland or X.org when the cable is plugged in, the graphics driver crashes with the following error message:

kernel BUG at drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:6264!

Full dmesg log attached.