Have just got a new PC with the following motherboard ASUS® H81M-C: Micro-ATX, LG1150, USB 3.0, SATA 6GBs.
I installed Ubuntu 12.04 from an install DVD, all went well.
However, when I try to shutdown/restart or logout, it goes to a black screen, and the PC is still on.
I then have to use the physical power button to switch machine off.
Not sure whats causing this, I have 12.04 on my old PC (using it now) with no problems.
I am worried that the new motherboard has some incompatibitly with 12.04?
Any help welcome.