Experiencing this problem as well. I'm running a homebuilt system with an Gigabyte GA-E350N mobo. It has ATI Radeon HD 6310 video card and I'm using the proprietary drivers. My kernel is 3.2.0-24-generic. I didn't have the problem on 11.10 but do on 12.04. Suspend works though.
I have a second homebuilt system using a older GA -G31.... mobo with a nvidia 210 video card. It shuts down fine. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/991977 Title: Ubuntu 12.04 hangs on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/991977/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
