Ubuntu
mutter package

  1. Bug #2027617
  2. Comment #4

Comment 4 for bug 2027617

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: Can't change build-in display refresh rate

Thanks. The kernel is reporting only one official refresh rate for that monitor:

│ │ ├───Modes
│ │ │ └───3840x2160@60.01 preferred driver phsync nvsync

So that's all you will see in Wayland sessions. To get more custom modes you can try logging into 'Ubuntu on Xorg' instead. There is an enhancement request being discussed to add the same to Wayland sessions:

https://gitlab.gnome.org/GNOME/mutter/-/issues/2856