Something similar happened to me.
Looking at /var/log/apt/history.log , it seems that the oracle, lowlatency, and intel-iotg kernels were installed automatically.
Start-Date: 2022-12-02 20:02:42
Commandline: packagekit role='update-packages'
Requested-By: angel (1000)
Install: linux-objects-nvidia-510-5.15.0-1021-intel-iotg:amd64 (5.15.0-1021.26+1, automatic), linux-signatures-nvidia-5.15.0-1021-intel-iotg:amd64 (5.15.0-1021.26+1, automatic), linux-objects-nvidia-510-5.15.0-1025-oracle:amd64 (5.15.0-1025.31+1, automatic), linux-signatures-nvidia-5.15.0-1025-oracle:amd64 (5.15.0-1025.31+1, automatic), linux-modules-5.15.0-1021-intel-iotg:amd64 (5.15.0-1021.26, automatic), linux-modules-5.15.0-56-lowlatency:amd64 (5.15.0-56.62, automatic), linux-image-5.15.0-1021-intel-iotg:amd64 (5.15.0-1021.26, automatic), linux-image-5.15.0-56-lowlatency:amd64 (5.15.0-56.62, automatic), linux-signatures-nvidia-5.15.0-56-lowlatency:amd64 (5.15.0-56.62+1, automatic), linux-image-5.15.0-1025-oracle:amd64 (5.15.0-1025.31, automatic), linux-modules-5.15.0-1025-oracle:amd64 (5.15.0-1025.31, automatic), linux-objects-nvidia-510-5.15.0-56-lowlatency:amd64 (5.15.0-56.62+1, automatic)
Upgrade: libglib2.0-dev-bin:amd64 (2.72.1-1, 2.72.4-0ubuntu1), libglib2.0-bin:amd64 (2.72.1-1, 2.72.4-0ubuntu1), libglib2.0-dev:i386 (2.72.1-1, 2.72.4-0ubuntu1), libglib2.0-data:amd64 (2.72.1-1, 2.72.4-0ubuntu1), libruby3.0:amd64 (3.0.2-7ubuntu2.1, 3.0.2-7ubuntu2.2), ruby3.0:amd64 (3.0.2-7ubuntu2.1, 3.0.2-7ubuntu2.2), libglib2.0-0:amd64 (2.72.1-1, 2.72.4-0ubuntu1), libglib2.0-0:i386 (2.72.1-1, 2.72.4-0ubuntu1)
End-Date: 2022-12-02 20:03:20
I solved this issue by uninstalling them:
sudo apt remove linux-image-5.15.0-1025-oracle linux-modules-5.15.0-1025-oracle linux-modules-5.15.0-1021-intel-iotg linux-modules-5.15.0-56-lowlatency
The grub configuration was correctly regenerated with the generic kernels.
5.15.0-53
to5.15.0-56
. The current answers below didn't help, as there is nothing related to "oracle" or anything else mentioned below installed. (current fix: boot with5.15.0-53
)