I'm also having this problem but Magic SYSRQ has been a real saver. It lets me reboot and then I'm able to power down during bios initiation. I have this problem on 2 machines. I think that either nvidia-drivers or Automatix is the cause. Both have nVidia cards with the nVidia driver. The cards are 6200TC 256MB and 6150. From what I've gathered adding these options to the bootline may help:
acpi=force vga=normal I have not tried these however but will soon. If you don't know what Magic SYSRQ you really need to look it up on Wikipedia. -- PC does not power down after shutdown or hibernate https://bugs.launchpad.net/bugs/104868 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
