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GNOME X11: Second monitor can't reach its maximum refresh rate
Posted: 2025-02-18 04:29
by pearmypie2
Hello!
I know the limitations of Xorg. I have one DP monitor (1440p 180Hz) that I normally use and a 4K 60Hz TV that I only plug into my computer via HDMI ocasionally. Now, I would expect everything to run at 60Hz, which I am fine with, but I can only select up to 30Hz in the GNOME display settings.
Unticking output to my main display doesn't fix the issue. I also tried adding the undetected refresh rate with xrandr. The refresh rate will appear in the settings drop down menu, but after selecting it, it will automatically revert to 30Hz.
Is this issue fixable?
Re: GNOME X11: Second monitor can't reach its maximum refresh rate
Posted: 2025-02-18 21:31
by ruwolf
What does command line system information tool
inxi say about your graphics?
(
$ is prompt of shell.)
Re: GNOME X11: Second monitor can't reach its maximum refresh rate
Posted: 2025-02-19 19:18
by mrmazda
viewtopic.php?t=161649 suggests Gnome/Wayland, 27" primary display, and Navi 1002:73ef graphics. Have you tried using Xorg instead of Wayland?
Re: GNOME X11: Second monitor can't reach its maximum refresh rate
Posted: 2025-02-20 10:00
by pearmypie2
This is the output of ixni:
Code: Select all
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 23 [Radeon RX 6650 XT /
6700S 6800S] vendor: ASRock driver: amdgpu v: kernel arch: RDNA-2
code: Navi-2x process: TSMC n7 (7nm) built: 2020-22 pcie: gen: 4
speed: 16 GT/s lanes: 16 ports: active: DP-3 empty: DP-1, DP-2, HDMI-A-1,
Writeback-1 bus-ID: 03:00.0 chip-ID: 1002:73ef class-ID: 0300
Display: x11 server: X.Org v: 1.21.1.7 with: Xwayland v: 22.1.9
compositor: gnome-shell v: 43.9 driver: X: loaded: amdgpu
unloaded: fbdev,modesetting,radeon,vesa dri: radeonsi gpu: amdgpu
display-ID: :1 screens: 1
Screen-1: 0 s-res: 2560x1440 s-dpi: 96 s-size: 677x381mm (26.65x15.00")
s-diag: 777mm (30.58")
Monitor-1: DP-3 mapped: DisplayPort-2 model: Acer VG271U M3
serial: <filter> built: 2023 res: mode: 2560x1440 hz: 180 scale: 100% (1)
dpi: 109 gamma: 1.2 chroma: red: x: 0.675 y: 0.314 green: x: 0.275
y: 0.671 blue: x: 0.149 y: 0.047 white: x: 0.314 y: 0.329
size: 597x336mm (23.5x13.23") diag: 685mm (27") ratio: 16:9
modes: 2560x1440, 1920x1200, 1920x1080, 1600x1200, 1280x1440, 1680x1050,
1280x1024, 1440x900, 1280x800, 1280x720, 1024x768, 832x624, 800x600,
720x576, 720x480, 640x480, 720x400
EDID-Warnings: 1: parse_edid: unknown tag 112
API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi x11:
drv: radeonsi inactive: wayland
API: OpenGL v: 4.6 vendor: amd mesa v: 24.2.8-1~bpo12+1 glx-v: 1.4
es-v: 3.2 direct-render: yes renderer: AMD Radeon RX 6650 XT (radeonsi
navi23 LLVM 15.0.6 DRM 3.59 6.12.9+bpo-amd64) device-ID: 1002:73ef
memory: 7.81 GiB unified: no
Info: Tools: api: eglinfo,glxinfo wl: weston-info x11: xdriinfo,
xdpyinfo, xprop, xrandr
mrmazda wrote: 2025-02-19 19:18
Have you tried using Xorg instead of Wayland?
Yes, currently I am on X11. I disabled Wayland in gdm's conf file because of another annoying graphical glitch and because I am trying out some Xlib/XCB programming.
Re: GNOME X11: Second monitor can't reach its maximum refresh rate
Posted: 2025-02-20 10:12
by pearmypie2
Here is the output of xrandr --query: (corrected)
Code: Select all
Screen 0: minimum 320 x 200, current 3840 x 3600, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 connected primary 2560x1440+0+2160 (normal left inverted right x axis y axis) 597mm x 336mm
2560x1440 179.88*+ 59.95 + 165.00 143.91 120.00
1920x1200 179.88
1920x1080 120.00 119.88 60.00 60.00 50.00 59.94
1600x1200 179.88
1280x1440 59.91
1680x1050 179.88
1280x1024 75.02 60.02
1440x900 179.88
1280x800 179.88
1280x720 60.00 50.00 59.94
1024x768 119.93 99.99 75.03 70.07 60.00
832x624 74.55
800x600 119.93 99.86 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 119.80 99.83 75.00 72.81 66.67 60.00 59.94
720x400 70.08
HDMI-A-0 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 1872mm x 1053mm
3840x2160 30.00*+ 25.00 24.00 29.97 23.98
4096x2160 30.00 24.00 29.97 23.98
2560x1440 59.95
1920x1200 30.00
1920x1080 60.00 50.00 59.94 30.00 25.00 24.00 29.97 23.98
1600x1200 30.00
1680x1050 59.88
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.90
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
4K 60Hz is not detected, but the monitor is capable of doing so.
Running these commands doesn't solve the issue:
Code: Select all
$ xrandr --newmode "3840x2160x60.00" 712.75 3840 4160 4576 5312 2160 2163 2168 2237 -hsync +vsync
$ xrandr --addmode HDMI-A-0 "3840x2160x60.00"
$ xrandr --output HDMI-A-0 --mode 3840x2160x60.00
xrandr: Configure crtc 1 failed
I tried the above commands using "_60.00" instead of "x60.00", as well with no result.
Re: GNOME X11: Second monitor can't reach its maximum refresh rate
Posted: 2025-02-20 13:53
by ruwolf
Try to use xrandr command, which fails, with --verbose option...