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I'm unable to output 4k/60 on new Mint machine with Nvidia Quadro P400
The best that I can set via GUI is 4k/30 and this works once out of 20 attempts (plugging / unplugging / rebooting)
I'd like to know if I'm wasting my time with this or should 4k/60 be achievable?
I've set the desired output manually via xrandr with no result..
Code:
$ xrandr
Screen 0: minimum 8 x 8, current 5760 x 2160, maximum 32767 x 32767
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 3840x2160+1920+0 (normal left inverted right x axis y axis) 1210mm x 680mm
3840x2160 60.00*+ 59.94 50.00 30.00 29.97 25.00 23.98
4096x2160 59.94 50.00 29.97 25.00 24.00 23.98
1920x1200 59.95
1920x1080 60.00 59.94 50.00 29.97 25.00 23.98 60.00 50.04
1280x1024 60.02
1280x720 59.94 50.00
1024x768 60.00
800x600 60.32
720x576 50.00
720x480 59.94
640x480 59.95 59.94 59.93
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 299mm
1920x1080 60.00*+ 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 disconnected (normal left inverted right x axis y axis)
As you can see the screen is suggesting the resolution I want, the second screen is temporary.
I have ordered MiniDP to HDMI adapter just in case, currently using Belkin branded MiniDP to HDMI cable. The Quadro has only MiniDP ports, what are the best ways to hook up panel with HDMI?
Why not use nvidia-settings to configure the card and display instead of xrandr? It's installed on your machine and should be available from the GUI's menu.
Why not use nvidia-settings to configure the card and display instead of xrandr? It's installed on your machine and should be available from the GUI's menu.
That gives "no signal" on the display.
I suspect my MiniDP cable is the problem. Now waiting for the adapter MiniDP to HDMI & hoping for the best.
Confirm you can actually run at that configuration; the monitor, the cable, the gfx card
Also make sure the monitor is set to HDMI 2.1 mode, it may be on HDMI 1.4 - use the OSD for the monitor to check
I had a lot of issues getting mine to work and finally the OSD setting got it working (but I also needed a newer cable)
PS: I did get it working but it was flaky (AMD RX 5700XT is not great on Linux atm) so setting it back to 30Hz fixed all my problems, but that shouldn't affect you, I think it is a firmware thing
Last edited by BeaverusIV; 08-25-2020 at 12:45 AM.
Confirm you can actually run at that configuration; the monitor, the cable, the gfx card
Also make sure the monitor is set to HDMI 2.1 mode, it may be on HDMI 1.4 - use the OSD for the monitor to check
I had a lot of issues getting mine to work and finally the OSD setting got it working (but I also needed a newer cable)
PS: I did get it working but it was flaky (AMD RX 5700XT is not great on Linux atm) so setting it back to 30Hz fixed all my problems, but that shouldn't affect you, I think it is a firmware thing
Hi, thanks for chiming in, I will update on this once I can use the new adapter.
I'm hoping the cable is the problem since even 30Hz was unreliable. If not, then be it - I'm not really a UHD enthusiast anyway and perfectly happy with 2k.
To sum this up
-Mint display settings offers 4k/30 max and is super flaky (feedback from chip in the cable perhaps?)
-Nvidia x server offers 4k/60 and goes up to 4096x2160 but doesn't get displayed on the monitor
-xrandr same as Nvidia utility
The monitor is not a TV and has no selection of HDMImode, but has these options
EDID select: 4k/60, 4k/30, 2k
Signal range: Full(0-255), Video(16-236), Auto (this appears to change contrast more than anything)
Also Noise reduction, MPEG noise reduction and Dynamic backlight control.
The datasheet clearly states that HDMI1 input can display 4k/60 so I guess if the EDID is set for that, then the rest is on the PC / cable.
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