Arch Linux

ray.s.whiteside

Member

Registered: 2021-05-10

Posts: 6

[SOLVED] Can't set native resolution 7860x2160 for G9 57"

I can't get xrandr to recognize a valid 7860x2160 resolution for this monitor. I have an Nvidia 1070 GTX and am connecting to the monitor with the provided Display Port cable.

❯ inxi -Gx
Graphics:
  Device-1: NVIDIA GP104 [GeForce GTX 1070] vendor: Micro-Star MSI
    driver: nvidia v: 545.29.06 arch: Pascal bus-ID: 01:00.0
  Display: x11 server: X.Org v: 21.1.9 driver: X: loaded: nvidia gpu: nvidia
    resolution: 5120x1440~60Hz
  API: OpenGL Message: Unable to show GL data. glxinfo is missing.
❯

❯ cvt 7680 2160 120
# 7680x2160 119.99 Hz (CVT) hsync: 277.89 kHz; pclk: 3001.25 MHz
Modeline "7680x2160_120.00"  3001.25  7680 8384 9240 10800  2160 2163 2173 2316 -hsync +vsync
❯ xrandr --newmode "7680x2160_120.00"  3001.25  7680 8384 9240 10800  2160 2163 2173 2316 -hsync +vsync
❯ xrandr --addmode DP-4 "7680x2160_120.00"
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:  51
Current serial number in output stream:  52
❯

Xorg log

xorg.conf

One interesting note, in nvidia-settings it says my Display Port connection is 4 lanes at 5.4 Gbps, which I believe is DP 1.2 speeds. In my monitor built-in configuration menu it specifically says it's set to DP 1.4, I can force it to 1.2 and back. This graphics card is supposed to support this resolution, but I'm wondering if the graphics card may be the issue?

Last edited by ray.s.whiteside (2023-12-31 03:07:11)

ray.s.whiteside

Member

Registered: 2021-05-10

Posts: 6

Re: [SOLVED] Can't set native resolution 7860x2160 for G9 57"

Solved, this card can only support this frequency at 30 Hz, and changing to that mode increases the bandwidth to 1.4.