[Bug 100973] New: [SKL][Regression] Dell monitor stays black until GDM restart
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon May 8 16:14:21 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=100973
Bug ID: 100973
Summary: [SKL][Regression] Dell monitor stays black until GDM
restart
Product: DRI
Version: DRI git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: pmenzel at molgen.mpg.de
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Created attachment 131263
--> https://bugs.freedesktop.org/attachment.cgi?id=131263&action=edit
journalctl -k -o short-precise
Testing Linux 4.11, there is a regression compared to Linux 4.9.25 and
4.11-rc5. The hardware is HD Graphics 530 and a Dell UP3214Q monitor.
Not even the Linux messages can be seen in the beginning. Restarting GDM with
`sudo systemctl restart gdm.service` didn’t help, and the monitor seems to be
stuck in a state, where it has to be forcefully powered off by pressing the
power button for ten seconds, and then turning it back on. Then it goes into
power saving mode, and then restarting GDM works.
```
$ lspci -s 0:02.0 -nn
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530
[8086:1912] (rev 06)
```
Please find the Linux messages with `drm.debug=0x1e` attached [1].
[1] https://01.org/linuxgraphics/documentation/how-report-bugs
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