https://bugzilla.kernel.org/show_bug.cgi?id=68571
--- Comment #46 from Alex Deucher alexdeucher@gmail.com --- (In reply to Fabian Pas from comment #45)
I am experiencing the same problem with my Radeon HD7770. I've added radeon.audio=0 to no avail. I'm on the 3.15.1 kernel now too, but it happened in kernel 3.14 too! It's driving me crazy.
Once again, different hardware, please file a new bug.