Here is a copy of the upstream report. I tested the latest kernel, 3.12.0-031200rc7-generic and the problem is there. But, not with 3.2.0-38-generic
** Attachment added: "Copy og the Upstream Report" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1151622/+attachment/3898898/+files/upstream-report -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1151622 Title: 050d:0237 [ASUS P9X79 PRO] The usb driver appears to fail To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1151622/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs