https://bugzilla.kernel.org/show_bug.cgi?id=62721
--- Comment #14 from Jason Vas Dias <jason.vas.dias at gmail.com> --- When the lockup happens, the <CTRL>+<ALT>+<F{N}> VT switch keys also stop working, and the only way to access the machine is to SSH in from another host. I was going to report this as an Ubuntu bug, but it appears to be an upstream bug - or should I report this on Ubuntu as well ? -- You are receiving this mail because: You are watching the assignee of the bug.