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[Marko Vendelin <745112@xxxxxxxxxxxxxxxxxx>]

I am using Thinkpad X201 (natty, unity) with docking station and an
external monitor attached via DP -> HDMI. Note that I have packed all
additional files (screenshots, logs) into tar.bz2 attached below.

Since I had problems with the external monitor (occasional black monitor
on boot ...), I started using Timo's kernel (  linux-
image-2.6.38-10-generic_2.6.38-10.44sru1_amd64.deb ). In my setup, the
laptop screen is off and all work is done via external monitor.
Probably after running the screensaver, the monitor got corrupted with
the several regions just shown in black. It seems that during a wakeup,
external screen was run as if it is the internal laptop screen. This can
be observed on attached screenshots with terminal occupying part of the
screen (Screenshot1.png) or maximized ( Screenshot-terminal-
fullscreen.png ). On other desktops, all maximized windows were reduced
accordingly. Monitor preferences ( Screenshot-monitor-preferences.png )
seem to confirm it; xrandr and dmesg outputs are in xrandr.txt and
dmesg.beforexrandr.txt, correspondingly. I managed to fix the problem by
running

xrandr --output LVDS1 --auto
xrandr --output LVDS1 --auto --output HDMI1 --auto
xrandr --output LVDS1 --auto --output HDMI1 --off
xrandr --output LVDS1 --auto --output HDMI1 --auto
xrandr --output LVDS1 --auto --output HDMI1 --auto --primary

As a result, I returned to my setup. If I remember correctly, LVDS1 was
actually off after running all those commands and looking at 'Monitor
Preferences' (Screenshot-monitor-preferences.png). Dmesg after all those
commands is in dmesg.afterxrandr.txt .

In addition, I have attached part of kern.log from my last boot (first
60s). If the full log is needed (~700KB), it can be downloaded via
http://sysbio.ioc.ee/~markov/kern.log.full.bz2

Let me know if I should report this bug somewhere else and if you have
any questions.

** Attachment added: "monitor_trouble.tar.bz2"
   https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/745112/+attachment/2230824/+files/monitor_trouble.tar.bz2

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https://bugs.launchpad.net/bugs/745112

Title:
  [arrandale] desktop is messed up with external monitors (x86_64)

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