Ubuntu
xserver-xorg-video-intel package

  1. Bug #503255
  2. Comment #7

Comment 7 for bug 503255

Revision history for this message
Reinhard Tartler (siretart) wrote : Re: [i945] querying information on external monitor with xrandr hangs gpu

Further references that might be related to this issue:

http://bugs.archlinux.org/task/17725
http://forum.ubuntuusers.de/topic/dualview-haengt-sich-auf/#post-2273500
Bug #329860 (but this is with vt switch, not with external monitors. Might be a seperate problem but symptoms look similar)

possibly https://bugs.freedesktop.org/show_bug.cgi?id=22996

based on these references, and the fact that Felix experiences similar behavior, I'm triaging this this bug accordingly.