[Bug 84718] New: DP MST: re-docking messes up displays
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Oct 6 07:22:47 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=84718
Bug ID: 84718
Summary: DP MST: re-docking messes up displays
Product: DRI
Version: XOrg CVS
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: dev at blackamp.de
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
This bug report refers to the latest git version
ec2b9ac81aed0d2dda2948171ca1c260184bf221 and linux kernel Linux XY
3.17-rc5-amd64 #1 SMP Debian 3.17~rc5-1~exp1 (2014-09-18) x86_64 GNU/Linux. It
might be a duplicate of 80355, however that bug report seems to have been
abandonded by its reporter. With laptop in dock I get the following xrandr
output and everything works fine:
$ xrandr
Screen 0: minimum 8 x 8, current 3120 x 2160, maximum 32767 x 32767
eDP1 connected 1920x1080+0+1080 (normal left inverted right x axis y axis)
309mm x 175mm
1920x1080 60.01*+ 59.93
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1360x768 59.80 59.96
1152x864 60.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP2-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm
x 299mm
1920x1080 60.00*+
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1152x864 75.00
1024x768 75.08 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00
720x400 70.08
DP2-2 connected 1200x1600+1920+0 left (normal left inverted right x axis y
axis) 432mm x 324mm
1600x1200 59.98*+
1280x1024 75.02 60.02
1152x864 75.00
1024x768 75.08 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00
720x400 70.08
DP2-3 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
Taking the machine out of the dock switches correctly to only one screen, BUT
has a ghost screen listed in DP2-3, there is no external screen connected:
$ xrandr
xrandr: Output DP2-1 is not disconnected but has no modes
xrandr: Output DP2-2 is not disconnected but has no modes
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x
175mm
1920x1080 60.01*+ 59.93
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1360x768 59.80 59.96
1152x864 60.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP2-1 unknown connection (normal left inverted right x axis y axis)
DP2-2 unknown connection (normal left inverted right x axis y axis)
DP2-3 unknown connection (normal left inverted right x axis y axis)
1360x768 59.80
1152x864 60.00
1024x768 60.00
800x600 60.32
640x480 59.94
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
Putting the machine back into the dock configures DP2-3 and one of my two
external screens on the dock shows a mirror image of my laptop screen. This
screen is the one that was listed in the very first xrandr output as DP2-1, it
is now incorrectly designated. Note the error messages for DP2-1 and DP2-2.
$ xrandr
xrandr: Output DP2-1 is not disconnected but has no modes
xrandr: Output DP2-2 is not disconnected but has no modes
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x
175mm
1920x1080 60.01*+ 59.93
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1360x768 59.80 59.96
1152x864 60.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP2-1 unknown connection (normal left inverted right x axis y axis)
DP2-2 unknown connection (normal left inverted right x axis y axis)
DP2-3 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm
x 299mm
1920x1080 60.00*+
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1152x864 75.00
1024x768 75.08 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00
720x400 70.08
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
Note that dock events trigger xrandr to reconfigure screens automatically.
Please let me know what additional information to provide.
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