I am experiencing this problem on an ASRock Z87E-ITX motherboard and GTX670 graphics card with Ubuntu 13.04 x64 installed.
I found two fixes (workarounds) for this problem. (1) Install an upstream kernel Install 3.11.0-031100rc3 from http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.11-rc3-saucy/ This fixes the shutdown issue, but introduces other problems, since it is a release candidate. (2) This is surprising! I installed updated Broadcom wireless drivers to fix a completely unreleated bug (#1173761). I tried the fix on a fresh install of current 3.8.0-27 kernel. To my surprise, fixing the wireless drivers also fixed the shutdown / restart problem. (Here is a link to the instructions I followed: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173761/comments/29). So, the next question is, do you guys have a Boroadcom wireless device on your machines? Also I noticed that the Linux wireless kernel module (wl) would not "unload" when I issued the command "sudo rmmod wl." Could it be that this module is loaded even if you do not have a wireless device? There may be some relation between this bug #1176028 and bug #1173761. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1176028 Title: Ubuntu 13.04 x64 doen't shutdown/restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1176028/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
