https://bugs.freedesktop.org/show_bug.cgi?id=97157
--- Comment #1 from Dan Doel dan.doel@gmail.com --- Created attachment 125465 --> https://bugs.freedesktop.org/attachment.cgi?id=125465&action=edit dmesg output with drm.debug=0xe
Adding (compressed) dmesg output with drm.debug=0xe on the kernel boot line. Careful extracting it, it's 502MB decompressed. Unfortunately, I couldn't seem to make the problem happen faster than over night.
Don't know if this will help or not, but it can't hurt, I suppose.