https://bugs.freedesktop.org/show_bug.cgi?id=106175
--- Comment #86 from tempel.julian@gmail.com --- Thanks for trying to reproduce. Hm, that leaves me clueless. It's 100% reproducible here and I tried things like forcing high performance profile, using plain 60Hz edid and disabling overclock, which all don't show any effect in that regard. I perhaps should attach new logfiles.