I’m reaching out to the community after wrestling with an issue that has proven to be quite stubborn. I’m trying to set up a 24.00Hz refresh rate for 4K content on my JVC X7900 projector connected to an Ubuntu machine with a GeForce 1050Ti via HDMI.
Here’s the challenge: my content is exactly 24.00Hz, but my display seems to be locked at 23.98Hz @ 3840x2160. This slight discrepancy is causing dropped frames on my 24.00Hz content, which is quite noticeable and disruptive.
Here’s what I have attempted so far:
- I’ve set the NVIDIA config to 4K@24Hz, but the display seems to insist on 23.98Hz as reported by
Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767 DVI-D-0 disconnected (normal left inverted right x axis y axis) HDMI-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 2210mm x 1250mm 1920x1080 60.00 + 59.94 50.00 23.98 60.00 50.04 4096x2160 24.00 23.98 3840x2160 59.94* 50.00 29.97 25.00 23.98 1680x1050 59.95 1600x900 60.00 1440x900 59.89 1280x1024 60.02 1280x800 59.81 1280x768 59.99 1280x720 60.00 59.94 50.00 1024x768 60.00 800x600 60.32 720x576 50.00 720x480 59.94 640x480 59.94 DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis)
- When I try to add a new mode with
xrandr --newmodeafter generating it with
cvt, I receive the following error:
X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 140 (RANDR) Minor opcode of failed request: 18 (RRAddOutputMode) Serial number of failed request: 35 Current serial number in output stream: 36
- I’ve double-checked the resolution on MacOS and Windows, and it does support 24.00Hz as the resolution I’m aiming for.
- The NVIDIA drivers are up to date, and I’ve looked at the proprietary NVIDIA X Server Settings without finding a solution.
Not sure what else to try. Can you guys give me a hint?
Thanks in advance,