I have just had the same issue, happened when I turned the bluetooth device on my laptop (MSI Wind U100) off.
Attached is a syslog extract. I was unable to kill bluetoothd with kill or killall, I needed to hard power off and reboot ** Attachment added: "syslog-extract" http://launchpadlibrarian.net/27194978/syslog-extract -- BUG: soft lockup - CPU#0 stuck for 61s! [bluetoothd:10637] https://bugs.launchpad.net/bugs/375244 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs