https://bugzilla.kernel.org/show_bug.cgi?id=85491
--- Comment #5 from Zermond zermond@gmail.com --- (In reply to Alex Deucher from comment #4)
Can you narrow down when the problem started? Even better, can you bisect?
As soon as I updated the kernel. At version 3.11, everything was fine with version 3.16 of the problem.