I get the same symptoms, and I've attached the error messages that I get in /var/log/kern.log as an attachment. The last section repeats thousands of times before the system freezes.
** Attachment added: "kernel output during crash" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/794335/+attachment/2192138/+files/uvcvideo-kernel-crash-output -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/794335 Title: System crash using Skype video calls To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/794335/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs