https://bugs.freedesktop.org/show_bug.cgi?id=67187
--- Comment #16 from Harald Judt h.judt@gmx.at --- Just as I wanted to write that everything works ok with uvd enabled and this bug can be closed, after the 19th suspend/hibernate attempt the machine failed to resume, with the screen simply going black and reporting no signal :-(
I've tried to resume from the same image 5 times but to no avail, so I'm back now with radeon.no_uvd=1 for a while to give it a test with real-world usage pattern. Just to be sure that this works in all cases too.