After updating to the latest bazzite-nvidia-open:stable image, my external monitor connected via HDMI is no longer able to use its maximum refresh rate of 75Hz. It is currently locked to 60Hz (59.96Hz), and the 75Hz option is missing from the KDE display settings.

This functionality was working correctly on the system image prior to this update.

Steps to Reproduce:

    Be on a previous bazzite-nvidia-open:stable image (where 75Hz works).

    Run ujust update to update to the latest image.

    Reboot into the new image (Version 43.20251114.1).

    Check display settings or xrandr output.

Expected Behavior: The HDMI monitor (identified as HDMI-A-1) should be detected correctly and allow the selection of its 75Hz refresh rate at 1920x1080.

Actual Behavior: The monitor is limited to 59.96Hz. The 75Hz option is missing entirely from the system.

System & Diagnostic Information:

    Bazzite Image: bazzite-nvidia-open:stable

    Display Server: wayland

rpm-ostree status:

State: idle
AutomaticUpdates: stage; rpm-ostreed-automatic.timer: no runs since boot
Deployments:
● ostree-image-signed:docker://ghcr.io/ublue-os/bazzite-nvidia-open:stable
                   Digest: sha256:81abc4d2b1bf782a5f09788e9986aca7ccff7c25d1939d43908bf16cce2d36da
                  Version: 43.20251114.1 (2025-11-15T00:08:56Z)

lspci -k | grep -A 3 -E "(VGA|3D)":

01:00.0 VGA compatible controller: NVIDIA Corporation AD107 [GeForce RTX 4060] (rev a1)
    Subsystem: Micro-Star International Co., Ltd. [MSI] Device 5161
    Kernel driver in use: nvidia
    Kernel modules: nouveau, nvidia_drm, nvidia

xrandr: (Note: HDMI-A-1 only lists 59.96Hz for 1920x1080)

Screen 0: minimum 16 x 16, current 3000 x 1920, maximum 32767 x 32767
HDMI-A-1 connected primary 1920x1080+1080+840 (normal left inverted right x axis y axis) 480mm x 270mm
   1920x1080     59.96*+
   1440x1080     59.99
   1400x1050     59.98
   1280x1024     59.89
   1280x960      59.94
   ... (rest of the modes)
DP-3 connected 1080x1920+0+0 right (normal left inverted right x axis y axis) 600mm x 340mm
   1920x1080     59.96*+
   ... (rest of the modes)