Whenever I shutdown or reboot, there is a very long delay (several minutes) before the system will shutdown. I was getting a nm-dispatch signal 15 so I thought the problem might be with network manager. I purged network manager but it didn't help.
The message I get while shutting down is "killing all remaining processes... [fail]" with no further information.
If I don't hit up-arrow right away, I get the Ubuntu logo dots screen and they all remain white.
There is nothing in /var/crash
Things I've tried:
- Shutdown does not power off computer
- Asking all remaining processes to terminate... fail
- removing both network-manager and modem-manager
- fresh install
- disabling networking
- How to troubleshoot slow shutdown?
What can I do? How can I tell what is causing the hangup?
Update: I just did a fresh install, and this problem happens on the first reboot after the install.