Ubuntu
xserver-xorg-video-intel package

  1. Bug #745112
  2. Comment #19

Comment 19 for bug 745112

Revision history for this message
Roland Dreier (roland.dreier) wrote : Re: [arrandale] desktop is messed up (goes black) when laptop is docked with two external 1920x1200 monitors (x86_64)

I added that ppa and updated, and did a bit more testing. It seemed to work a bit better, though not in the way I would have expected.

classic/no-effects: I started undocked, and actually got docking once to work perfectly (both monitors lit up, desktop displayed on both). However when I undocked and re-docked again, my right monitor didn't light up (although I got my desktop on the left monitor). I was not able to get the right monitor to turn on again, after trying "xset dpms force on" , the gnome monitor GUI, going to tty1 and back, etc. This situation was stable after a couple more undock/redock cycles. I never got into the black screen/moving mouse pointer situation. The kernel log never showed any intel graphics related stuff (just USB devices appearing/disappearing and other docking related stuff). And i915_error_state stayed "no error state collected".

unity: Again I actually got docking to work once; however the second time I docked, I got the black screen/moving mouse pointer and right monitor stuck with no signal. However neither the kernel log nor the error_state file showed anything.