For reasons I don’t want to tell here, I need to operate a ASUS PQ321Q (4K capable Display) over a single HDMI cable.
The graphics card should be able to to this: It’s a Quadro K2000.
The (passive) DP–>HDMI cable specification says: “High Speed HDMI for HDTV up to 4K (2160p)”.
The monitor docs also claim that 3840x2160@30fps should work. I have read all threads in this forum (I hope) that seem to have similar problems.
If tried a lot of different xorg.conf options, for example:
Option "ModeValidation" "DFP-1: NoDFPNativeResolutionCheck, NoMaxPClkCheck, NoVertRefreshCheck" Option "ExactModeTimingsDVI" "True"
The mode xorg gets from EDID is correct and valid, I think.
It does not get sorted out because of the 165MHz problem anymore, instead I get now:
ViewPort 3840x2160 exceeds hardware capabilities. Mode is rejected: Unable to construct hardware-specific mode timings.
Linux-driver version: 331.17, also tried 319.60 before.
I tried the same setup with Display-Port and there it’s working (!)
I also tried the same setup in windows (7, 32bit, latest 331 driver), there it’s not working, I can’t select the 4K monitor to be used, although it’s detected. (I am not interested to use it under windows, just for information here.)
How’s the current status: Could/should this work already somehow?
If it’s a driver problem, is somebody at Nvidia working on it?
Thank you for any feedback!
nvidia-bug-report.log.gz (192 KB)