Bug 104109

Summary:

After upgrade to kernel 4.13.16-302 one monitor in a two monitor displayport setup isn't working anymore.

Product:

xorg

Reporter:

torsten

Component:

Driver/nouveau

Assignee:

Nouveau Project <nouveau>

Status:

RESOLVED MOVED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

major

Priority:

medium

Version:

unspecified

Hardware:

Other

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
kernel log (4.13.16-300)	none
kernel log (4.13.16-302)	none
xrandr output	none
xrandr output	none

Description torsten 2017-12-05 14:14:37 UTC

Created attachment 135975 [details]
kernel log (4.13.16-300)

This issue comes in two parts which may be related to each other.
First when upgrading to kernel 4.13.16-300 I began to have issues with one monitor when it went into sleep mode. I then saw errors like "disp: outp 03:0006:0f88: training failed". Checking xrandr showed that the monitor "existed" but it only showed a black screen.
This behaviour was tested on both fedora 27 and ubuntu 16.04 LTS with all updates installed.

The dual monitor setup was working prior to updating to kernel 4.13.16-300.


When doing a kernel upgrade to 4.13.16-302 this monitor was not even found anymore by the nouveau driver.

I will attach the following files:
* kernel log 4.13.16-300
* kernel log 4.13.16-302
* xrandr when running kernel 4.13.16-300
* xrandr when running kernel 4.13.16-302

Comment 1 torsten 2017-12-05 14:15:41 UTC

Created attachment 135976 [details]
kernel log (4.13.16-302)

Comment 2 torsten 2017-12-05 14:16:20 UTC

Created attachment 135977 [details]
xrandr output

Comment 3 torsten 2017-12-05 14:19:05 UTC

Created attachment 135978 [details]
xrandr output

Comment 4 Martin Peres 2019-12-04 09:34:06 UTC

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