Public bug reported:
I've just upgraded to 12.04 from 11.10, and now when I connect my
external monitor, either before or after login, my X session freezes up.
It also seems to stop <ctrl>-<alt>-<Fkey> from letting me switch to a
console.
I've attached an Xorg.log that shows me booting up with both monitors
attached, and then later me logging in, after which it happens. I
observed the default wallpaper being stretched across both monitors,
then everthing freezes up. The OS seems to stop responding to all
keypresses but I can still log in via SSH. When I log in via SSH, X is
running at 100%.
I did an strace on the running X process, but it doesn't look very
useful.
lsb_release -rd output:
Description: Ubuntu 12.04 LTS
Release: 12.04
uname -a
Linux tehlappy 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1011086
Title:
X freezes after connecting external monitor
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