Ubuntu 12.10 will not shutdown or restart, even by using terminal commands such as:
sudo shutdown -r now
, init 0
, halt
, etc.
I have noticed one thing, that whenever I reinstall NVIDIA drivers, the system can shutdown/reboot temporarily, but after one or two shutdowns/reboots, the problem happens again.
I'm not sure exactly when this problem started, but it was sometime after Tuesday or Wednesday April 10, when I installed automatic updates.
System:
Memory 3.9 GiB
Processor Intel Core 2 Duo CPU T7700 @ 2.40GHz x 2
Graphics GeForce 8600M GT/PCIe/SSE2
OS type 64-bit
Disk 113.9 GB