Created attachment 28815 [details] register dump before running xrandr. The screen goes black (except for a few lines at the top), when I plug in an external monitor (CMO 22" display, 1680x1050 resolution), and run xrandr. The system is running Ubuntu Koala alpha 4. Steps to reproduce: Boot the machine. Log in on laptop. Plug in external CMO panel. run xrandr Display then screws up. Lots of stuff attached.
Created attachment 28816 [details] register dump after running xrandr
Created attachment 28817 [details] xorg log file.
Created attachment 28818 [details] xorg.conf file
Created attachment 28819 [details] dmesg from the system
Note the bug is exactly repeatable, and that the X server/system is *not* hung; the cursor will still track, and change as you cross windows. And the cursor tracks across from the built in panel to the CMO external screen.
looks like dup with bug#23112 *** This bug has been marked as a duplicate of bug 23112 ***
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