[Bug 97531] New: [Broadwell] Second external monitor of MST setup does not turn on
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Aug 29 10:14:02 UTC 2016
https://bugs.freedesktop.org/show_bug.cgi?id=97531
Bug ID: 97531
Summary: [Broadwell] Second external monitor of MST setup does
not turn on
Product: DRI
Version: XOrg git
Hardware: Other
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: darkbasic at linuxsystems.it
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Hi,
I reported a bug upstream @Plasma (https://bugs.kde.org/show_bug.cgi?id=365455)
and KDE developers discovered the issue is in the Intel driver: the modesetting
fails on the screen and that's why it goes off. I can trigger switching the
display on by going through a dpms cycle. I have the very same issue with
modesetting and with kernels from 4.4 to 4.7, so I'm not sure where the problem
may be. In the linked bug report you can find logs and much more informations,
including some videos.
Please let me know if you need anything else, I'm at your disposal.
Thanks,
Niccolò
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