Screen resolution problem

Hello all, cant add a custom resolution(2560x1440_60). Using Nvidia GTX 560SE with dual-link cable and Samsung C27JG5x. Pretty good working in windows with 2k resolution. Can`t add via xrandr. Can anyone help ?


Please provide from terminal inxi -Fazy
If you installed the nvidia proprietary drivers, then take a look here to enable early KMS and test if that helps.

If you run on wayland session, you can’t use xrandr at all … is for x11 session only.