2k with 240hz not available

General system Kernel, boot, graphics & hardware
21

Maybe X11 is just not able to handle 2k with 240hz? I remember using X on my first Linux distro… i think that was Ubuntu 7. I probably still have a official CD with it! They been sending it for free… beautiful memories. And my “fight” on ubuntu forum with not working cheap network card on usb cause my notebook don’t had own :smile:

Do you know or saw anyone using X11 to be able using that rate on X11 with 2k or bigger resolution?

22

Honestly I’m pretty sure there are a few. But they had troubles also. I think some have it working. :thinking:

Edit: Not necessarily the same graphics cards or monitors.

23

Hm… i can try to install Endeavour to my notebook (i5 10th gen, only Intel GPU) and check if i will be able to reach 2k with 240hz. I’m not sure though it will be able to handle it using HDMI.

If this will work on my notebook then we can guess it’s nvidia drivers fault somehow? Or maybe that way we will be able to read some configs from working X11? Or im wrong and that gonna be a waste of time?

24

I’m not sure what to tell you. Did you check the monitors and disable gsync?

25

I’m not sure what u mean by “check the monitors”. Gsync is disabled from begin.
image

26

Did you try setting a monitor section?

https://wiki.archlinux.org/title/xrandr#Permanently_adding_undetected_resolutions

Edit: This is all I know what the wiki shows.

https://wiki.archlinux.org/title/xrandr#Testing_configuration

27

I tried:

xrandr --newmode "2560x1440_240.00"  1442.50  2560 2800 3088 3616  1440 1443 1448 1663 -hsync +vsync

Without any errors. And then:

$ xrandr --addmode DP-0 2560x1440_240.00
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:  43
  Current serial number in output stream:  44

I also tried modify .config/monitors.xml file by changing rate to 239.88 on single monitor. After reboot both of them run on 60hz. I already restore this file to original state before my change.

28

https://wiki.archlinux.org/title/NVIDIA/Troubleshooting#xrandr_BadMatch

It may be an issue with the EDID modes of your monitor it doesn’t recognize so maybe try this troubleshooting here. Or it’s the Nvidia drivers. :wink:

Edit: Keep in mind normally there is no xorg file with nvidia as it is deprecated. It would be i think?

https://wiki.archlinux.org/title/NVIDIA#Xorg_configuration

/etc/X11/xorg.conf.d/20-nvidia.conf