[Bug 84718] DP MST: re-docking messes up displays
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Oct 8 10:39:37 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=84718
--- Comment #14 from Daniel Michalik <dev at blackamp.de> ---
Here I will describe another peculiarity connected to MST. It might be
connected to this bug, or could become a separate issue. I have the laptop in
the dock, and I disabled the xrandr auto-configure rule in udev.
xrandr output:
$ xrandr
Screen 0: minimum 8 x 8, current 3120 x 2160, maximum 32767 x 32767
eDP1 connected primary 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)
I undock.
$ xrandr
Screen 0: minimum 8 x 8, current 3120 x 2160, maximum 32767 x 32767
eDP1 connected primary 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 disconnected (normal left inverted right x axis y axis)
DP2-2 disconnected (normal left inverted right x axis y axis)
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)
My screen output on the laptop (eDP1) does not change, I don't get the typical
feature of a primary screen (such as the dock, status bar, clock, etc). The
mouse cursor cannot leave the screen, so there is no other screen active that I
could reach but not see. All of this is not my point, just a description of
what I see. The peculiarity is, that I can change the status by disabling the
unconnected DP2-3 (which was never connected before) with 'xrandr --output
DP2-3 --off', and voila, my laptop screen changes to become the main screen
with all the expected features.
$ xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 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 disconnected (normal left inverted right x axis y axis)
DP2-2 disconnected (normal left inverted right x axis y axis)
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)
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