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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - sna: (Haswell) X-server freezes when enabling DP at docking station"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71267#c163">Comment # 163</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - sna: (Haswell) X-server freezes when enabling DP at docking station"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71267">bug 71267</a>
from <span class="vcard"><a class="email" href="mailto:ms@sky-watch.dk" title="Martin <ms@sky-watch.dk>"> <span class="fn">Martin</span></a>
</span></b>
<pre>So, to my understanding MST is not supported meaning that multiple (DP)
connected monitors will become mirrored. However, it seems like also the DVI
output is mirrored - is this expected?
I am running Ubuntu 14.04 (i.e. 3.13.0-24-generic) on a T440p attached to an
ultra dock (firmware 2.17), and attaching one DP monitor works flawlessly
together with the builtin display. However attaching an additional monitor
(occurs for both DP and DVI) simply mirrors the first DP connected display.
xrandr outputs the same in either case:
martin@martin-ThinkPad-T440p:~$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 32767 x 32767
eDP1 connected (normal left inverted right x axis y axis)
1600x900 60.0 +
1440x900 59.9
1360x768 59.8 60.0
1152x864 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP2 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis)
518mm x 324mm
1920x1200 60.0*+
3840x1200 60.0
2560x1024 60.0
1920x1080 60.0
1600x1200 60.0
1680x1050 60.0
1280x1024 60.0
1440x900 59.9
1280x800 59.8
1280x720 60.0
1024x768 60.0
800x600 60.3
640x480 60.0
720x400 70.1
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
I would expect the DVI port to be working independently of the DP port - is
this not the case?
thanks,
Martin</pre>
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