https://bugs.freedesktop.org/show_bug.cgi?id=91202
Vedran Miletić rivanvx@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Summary|output to DVI-I is blank |Output to DVI-I (or DVI-D) | |is blank on Tonga (R9 285 | |and 380X) with multiple | |monitors
--- Comment #8 from Vedran Miletić rivanvx@gmail.com --- I am using XFX R9 380X: 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Amethyst XT [Radeon R9 M295X Mac Edition / R9 380X] [1002:6938] (rev f1)
This bug affects me as well. Interesting part is this: when I plug in just DVI-I on boot, monitor works fine, and plugging DVI-D makes the monitor connected to DVI-D blank. However, if I change monitor setup using e.g. GNOME Displays, the DVI-I will turn blank and DVI-D will work. Disconnecting DVI-D afterwards does not help, DVI-I remains blank.
I have three HDMI monitors, two of them are connected via DVI->HDMI adapters, and I can do further testing if it could be helpful.