Ubuntu – Ubuntu 12.04 freezes after update

12.04freezeupdates

I am working with Ubuntu 12.04 for a while now, constantly upgrading and afterwards cleaning with Ubuntu-Tweak's Janitor. Everthing went fine until about two weeks ago: then my computer constantly froze after approx. twenty seconds. Sometimes I had an error message, but not always, saying:

"usr/share/apport/appport-gpu.error-intel.py"

Nothing helped, the problem continued. I re-installed. Then it worked again, I updated, but did not use Ubuntu Tweak. It worked, today (march 19th) I updated only and had the problem again. Recovery mode does not help.

What to do?

Best Answer

Apparently yesterday's update of the system kernel is botched: http://ubuntuforums.org/showthread.php?t=2127138

Try booting with the previous version. This worked for me today.

Edit: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1157252

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I have had a similar problem, and the only thing that works for me is running an older kernel. There is a list of stable kernels here: https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

I have been using 3.19 without any problems.

Edit:

Here is a previous related question: How do I install an old kernel?. The answer describes how to install an old kernel.

Ubuntu – Machine freezes on update of secureboot-db

I had the same problem crop up a couple of weeks ago - I eventually solved it today by simply cancelling the update for that package (based on this answer). Probably not the 'correct' answer/solution, but it allowed me to update other stuff after...

sudo mv -v /var/lib/dpkg/info/secure* /tmp
sudo dpkg --remove --force-remove-reinstreq secureboot-db

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