GE has reorganized the gamescope packages to be more usable for those on desktops that just want the option to use gamescope-session (Steam Deck mode):
1. Run your system updater or manually update these packages:
nobara-updater
gamescope-session-plus
gamescope-session-steam
gamescope-htpc-common
gamescope-htpc-common will pull in a new dependency -- gamescope-session-common
2. If you do NOT want the streamlined htpc mode (which includes SteamOS logo plymouth image and no grub menu and no grub timeout, and auto-updater inside the session), -after- updating the above packages, remove gamescope-htpc-common, then run the quirks from the updater.
Basically:
Want session only:
gamescope-session-plus
gamescope-session-steam
gamescope-session-common
Want full HTPC mode:
gamescope-session-plus
gamescope-session-steam
gamescope-session-common
gamescope-htpc-common
Full Handheld packages:
gamescope-session-plus
gamescope-session-steam
gamescope-session-common
gamescope-htpc-common
gamescope-handheld-common
Additional Steamdeck Specific packages:
jupiter-hw-support
jupiter-fan-control
Run quirks from updater after installing/removing which packages you want.