As written above, I had enabled X Updates as part of investigating
#987056 Suspend always hangs on Asus N55S, becomes really hot
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/987056
Issuing the following command:
sudo ppa-purge ppa:ubuntu-x-swat/x-updates
downgraded the packages to
** Description changed:
- Used Precise for weeks, with external monitor sometimes plugged, everything
ok.
- (Small drawback: boot fails with external monitor attached. Another issue.)
+ After batch software update on 2011-05-21, X started to freeze (as
+ defined on
The machine is running an nvidia optimus hardware, that is Intel + nVidia.
Bumblebee is installed on the machine, and works when used, but I don't use it.
As per https://wiki.ubuntu.com/X/Troubleshooting/Freeze
Problem: Freeze began after a system update
No kernel package update near the time
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided = High
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https://bugs.launchpad.net/bugs/1002542
Title:
Xorg freeze within weeks, but within minutes after
