Bug 112061

Summary:	DisplayPort on Thinkpad T500 AMD 3650 gpu stopped working
Product:	Drivers	Reporter:	Pavol Klačanský (pavol)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	RESOLVED INVALID
Severity:	normal	CC:	alexdeucher, pavol
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	4.4.1	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Pavol Klačanský 2016-02-07 02:55:26 UTC

As of upgrade to 4.4.1 the displayport output stopped working. I am using DPM and it worked with 4.4.0-r1 and previous kernels.

Comment 1 Alex Deucher 2016-02-08 14:59:33 UTC

Please attach your xorg log and dmesg output.  Can you bisect?

Comment 2 Pavol Klačanský 2016-02-09 03:33:07 UTC

It is strange, but I accidentally rebooted to that kernel again and it works. I probably forgot to do 'make modules_install'.