https://bugs.freedesktop.org/show_bug.cgi?id=102646
--- Comment #99 from tempel.julian@gmail.com --- Wow, finally a fix. It seems to work without issues for me now with 2560x1440 75Hz. You're a true hero! =) Will test some higher refreshrates tomorrow, I can overclock my display to 100Hz or higher (at least in theory, I guess DL-DVI pixelclock limitation will limit me to something like 82Hz).