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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - [ILK switchable] External monitor (connected via docking station) stays black"
href="https://bugs.freedesktop.org/show_bug.cgi?id=32934#c51">Comment # 51</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - [ILK switchable] External monitor (connected via docking station) stays black"
href="https://bugs.freedesktop.org/show_bug.cgi?id=32934">bug 32934</a>
from <span class="vcard"><a class="email" href="mailto:stefan@sf-email.de" title="Stefan SF <stefan@sf-email.de>"> <span class="fn">Stefan SF</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=32934#c50">comment #50</a>)
<span class="quote">> In the dump from <a href="show_bug.cgi?id=32934#c48">comment #48</a>, are both displays up and working with i915
> disabled?</span >
No. Sorry for not mentioning this ;)
Only the notebook screen is working. It gets even worse. The LED of the
external monitor indicates that the monitor gets no signal at all, i.e. xrandr
shows only the notebook monitor:
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 800 x 600, current 1280 x 800, maximum 1280 x 800
default connected 1280x800+0+0 0mm x 0mm
1280x800 0.0*
1024x768 61.0
960x600 0.0
800x600 61.0
However, with enabled i915 driver, xrandr shows the external monitor which
stays black as before:
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 8192 x 8192
LVDS2 connected primary 1440x900+0+0 (normal left inverted right x axis y axis)
303mm x 190mm
1440x900 60.0*+ 50.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP4 disconnected (normal left inverted right x axis y axis)
HDMI2 connected (normal left inverted right x axis y axis)
1280x1024 60.0 +
1024x768 60.0
800x600 60.3
640x480 60.0
720x400 70.1
HDMI3 disconnected (normal left inverted right x axis y axis)
DP5 disconnected (normal left inverted right x axis y axis)
DP6 disconnected (normal left inverted right x axis y axis)
...
<span class="quote">> So this may be a case of 'not our bug', or at least not solely, since it
> means we need the switchable graphics handling support to work.</span >
Can you give me a hint where I can try to enable switchable graphics support? I
never tried this on Linux before.</pre>
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