Seems that
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1039143
Is all about this bug also and there was a fix in kernel but now it no longer works in the latest 3.10
Seems that
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1039143
Is all about this bug also and there was a fix in kernel but now it no longer works in the latest 3.10