Unless I am mistaken this is caused by one of the SAUCE patches or config changes listed at https://launchpad.net/ubuntu/raring/+source/linux/3.8.0-18.28
Unless I am mistaken this is caused by one of the SAUCE patches or config changes listed at https:/ /launchpad. net/ubuntu/ raring/ +source/ linux/3. 8.0-18. 28