There seem to be similar reports at:
http://bugs.gentoo.org/show_bug.cgi?format=multiple&id=217465
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/220957
http://ubuntuforums.org/showthread.php?p=4909193
There seem to be similar reports at:
http:// bugs.gentoo. org/show_ bug.cgi? format= multiple& id=217465
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/220957
http:// ubuntuforums. org/showthread. php?p=4909193