Hi. I just installed bazzite (tripple boot) and it only boots to a 1024x768 mode with no options to select higher resolutions. In addition, it doesn't recognize my 2nd monitor. This system is amd ryzen 5 5500 with nvidia gtx 1070ti. I thought it might be the secure boot setup as it didn't go right on install, but I fixed that. Still the same problem. There are no hardware issues as it works great booting into windows and linux mint. All OS's are installed on separate drives.
Solution
Sorry for the late reply. The version of Bazzite you're using is for modern GTX cards(GTX 16xx cards and up), your card needs a different version. You can switch over to that version by running
rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-nvidia:stable
rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-nvidia:stable
in terminal and rebooting once the process is complete.