Linux Questions

Problem: new kernels not showing up in boot menu

I can install new kernels, and I see them in /boot/efi/{PARITION_UUID}, but they don't show up in the systemd-boot menu.

Data

Normally, Fedora shows the 3 latest kernels (plus a recovery kernel) in the boot menu. I only see up to 6.11.6 in the systemd-boot menu. On the /boot partition, I see much newer kernel versions (both labeled fc40 and fc41)

➜  ~ sudo ls /boot/efi/808f2c9ae4464f1ab2f0a7d367da1b30 -l
total 20
drwx------. 2 root root 4096 Jul  4 19:25 0-rescue
drwx------. 2 root root 4096 Nov  8 12:42 6.11.6-200.fc40.x86_64
drwx------. 2 root root 4096 Nov 18 17:57 6.11.7-200.fc40.x86_64
drwx------. 2 root root 4096 Nov 12 16:47 6.11.7-300.fc41.x86_64
drwx------. 2 root root 4096 Nov 20 10:10 6.11.8-300.fc41.x86_64
➜  ~ sudo ls /boot/efi/808f2c9ae4464f1ab2f0a7d367da1b30/6.11.8-300.fc41.x86_64 -l 
total 72484
-rwx------. 1 root root 57917440 Nov 20 10:10 initrd
-rwx------. 1 root root 16304488 Nov 20 10:10 linux

Systemd-boot

I started with other distros on this disk before I settled on Fedora. Since I was happy with systemd-boot and its automatic discovery of boot entries, I chose to use systemd-boot when I installed Fedora. I know that Grub is the default bootloader and manager for Fedora, but I have systemd-boot. It's an option in the installer.

Major OS upgrades and rolling back the rollback

Last weekend I upgraded from Fedora 40 KDE Spin to Fedora 41. On the next Monday morning, screensharing in Edge Browser had stopped working, so I rolled back to a Fedora 40 snapshot with BTRFS Assistant. This turned out to be an issue in the latest Edge version, not in the underlying OS, so I rolled back the rollback and went to the Monday evening snapshot, then upgraded my packages.

Ever since, I'm not seeing new Kernels in the systemd-boot menu. Any idea how I can fix this, short of a fresh install of Fedora 41 KDE?