Well something happened today, I accidentally hit my keyboard while shutting down, and discovered all of this under-the-hood stuff (see below.)
I found a related bug https://bugs.launchpad.net/ubuntu/+s...ux/+bug/987933 so this may still have something to do with in nvidia.
But my computer has never had a problem shutting down completely, it's just rather slow. And I get red screens.
I don't know what to do. I don't even know how this happened. Everything was okay. My tearing is back, too. This is the worst.
Edit: I should mention, the real kicker: about 1 in 10 times, it shuts down perfectly like it used to.
Broadcast message from root@
(unknown) at 22:32 ...
The system is going down for halt NOW!
Chekcing for running unattended-upgrades:
speech-dispatcher disabled:edit /etc/default/speech-dispatcher
-Stopping vnStat daemon vnstatd [ Ok ]
*ASking all remaining processes to terminated... #(It seems to hang for several secs right around here)
*Killing all remaining processes... [Fail]
nm-dispatcher.action:Caught signal 15, shutting down...
nm-dispatcher.action: Could not get the system bus. Make sure the emssage bus daemon is running!
Message: Did not receive a reply. Possible causes include: the remote application did not send a reply,
the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
modem-manager: <info> Caught signal 15, shutting down...
*Deconfiguring netowkr interfaces... [ Ok ]
*Deactivating swap #(I thought I disabled this..) [ Ok ]
umount: /run/lock: not mounted [ Ok ]
* Will now halt...
[ 62.459321] Powder down.