[Bug 73530] Asus U38N: Black screen with Radeon driver in Linux

https://bugs.freedesktop.org/show_bug.cgi?id=73530

--- Comment #116 from Alex Deucher alexdeucher@gmail.com --- (In reply to Norbert Pfeiler from comment #115)

I don’t think that’s it because I tried that with earlier kernel versions (I also hardcoded the dpcd in several places and that didn’t work). I suspected it had to do with the ›dp_aux_ch timeout‹ and interrupts occurring around the time of link training.

As I took a significant amount of time digging through the code I would like to get convinced about which commit fixed this.

You can use git to bisect what fixed it (just reverse the good/bad flagging).