Hello Andy,
After tests on my Debian 11 virtual machine, the installation of the new upgraded kernel is ok.
philippe@station:~$ uname -a
Linux station 5.10.0-10-amd64 #1 SMP Debian 5.10.84-1 (2021-12-08) x86_64 GNU/Linux
But on my workstation it's problematic !?
A few weeks ago I installed the 5.14 backports kernel on this PC, but since the Nvidia 460.91.03-1: amd64 arm64 driver does not work with this kernel, I have uninstalled this backports kernel manually.
However I did not modify the default installation of the kernel 5.10.70-1. After this, the upgrade to Debian 5.10.84-1 not work.
I had to force the installation of the 5.10.84-1 kernel with this command :
apt update && apt install linux-image-amd64 -y && apt install linux-headers-amd64 -y && apt install firmware-linux firmware-linux-nonfree
I'm afraid I will have the same problem in the future...
My source list is ok :
Best regards.
Philippe