Comment 8 for bug 1497321

francesco forastieri, given this report is closed, it has nothing to do with your problem. However, if you would like your issue addressed, it will help immensely if you filed a new report with the Ubuntu repository kernel (not mainline/upstream) via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.