SUMMARY Option for 360Hz not showing up in System Settings STEPS TO REPRODUCE 1. Open System Settings -> Display & Monitor -> Refresh rate OBSERVED RESULT Max refresh rate is 240Hz EXPECTED RESULT Max refresh rate should be 360Hz SOFTWARE/OS VERSIONS Windows: 10 Home (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: 6.8.0-45-generic (64-bit) KDE Plasma Version: 6.1.5 KDE Frameworks Version: 6.6.0 Qt Version: 6.7.2 ADDITIONAL INFORMATION I have a 1440p 360Hz monitor. I have a dual boot setup. 360Hz works just fine in Windows with the same cable / system. `kscreen-doctor -o` output does not list 360Hz as valid mode. Additionally it also shows the display as VRR incapable and HDR incapable, both of which work fine in Windows as well. (Should I open separate issues for these?)
Created attachment 174092 [details] output of `kscreen-doctor -o`
KWin doesn't filter modes, the list you see is the list the kernel says is available. What GPU are you using?
(In reply to Zamundaaa from comment #2) > What GPU are you using? 1660 Ti (Mobile) Mobile because it's a laptop It's run through the DP port which is directly connected to the GPU so no issues with iGPU
I'm afraid your issue is lower in the stack than kwin. Please report to your graphic driver vendor.
Actually this turned out to be a trivial issue. I thought Neon comes with proprietary Nvidia drivers installed but it doesn't. Being new to this I just put `nvidia` in the terminal and saw `nvidia-detector` which said I am using nvidia-driver-550. I followed the guide here to actually install the Nvidia driver: https://discuss.kde.org/t/install-nvidia-drivers-on-kde-neon/1648 Installing them solved the issue --- I suppose it was falling back to the `amdgpu` driver for the iGPU so the bug could be there