https://bugzilla.kernel.org/show_bug.cgi?id=172421
--- Comment #12 from Elmar Stellnberger <estellnb at elstel.org> --- Today I approached to try out the dual-link feature of the DVI-port. First I had verified with AOC that my u2868pqu monitor in deed supports dual-link over DVI. Then I connected the DVI output of my R5 230 (comment #6) with the u2868pqu monitor over DVI. Trying to boot with a vanilla/hdmimhz=0 I just ended up with a black screen. Finally I did succeed to get a picture by setting hdmimhz=165. Firstly amazed I then noticed that hdmimhz does also disable the duallink feature which was obviously the cause why it worked with hdmimhz. My explanation for this is that the radeon driver detected both the display and the card to support dual-link DVI. However the cable does not. -- You are receiving this mail because: You are watching the assignee of the bug.
