Comment 8 for bug 2017790

Sorry, may be it wasn't obvious in my previous message, but I don't have "backport-iwlwifi-dkms" installed. Sorry if I'm misunderstanding. I'm not aware of having installed any other backports.

I'm not sure if this helps, but here's a list of all linux kernel and firmware packages installed after the upgrade:

~$ dpkg --list |grep 6.2.0-20
ii linux-headers-6.2.0-20 6.2.0-20.20 all Header files related to Linux kernel version 6.2.0
ii linux-headers-6.2.0-20-generic 6.2.0-20.20 amd64 Linux kernel headers for version 6.2.0 on 64 bit x86 SMP
ii linux-image-6.2.0-20-generic 6.2.0-20.20 amd64 Signed kernel image generic
ii linux-libc-dev:amd64 6.2.0-20.20 amd64 Linux Kernel Headers for development
ii linux-modules-6.2.0-20-generic 6.2.0-20.20 amd64 Linux kernel extra modules for version 6.2.0 on 64 bit x86 SMP
ii linux-modules-extra-6.2.0-20-generic 6.2.0-20.20 amd64 Linux kernel extra modules for version 6.2.0 on 64 bit x86 SMP
ii linux-modules-iwlwifi-6.2.0-20-generic 6.2.0-20.20 amd64 Linux kernel iwlwifi modules for version 6.2.0-20
ii linux-modules-nvidia-525-6.2.0-20-generic 6.2.0-20.20 amd64 Linux kernel nvidia modules for version 6.2.0-20
ii linux-modules-nvidia-525-generic 6.2.0-20.20 amd64 Extra drivers for nvidia-525 for the generic flavour
ii linux-objects-nvidia-525-6.2.0-20-generic 6.2.0-20.20 amd64 Linux kernel nvidia modules for version 6.2.0-20 (objects)
ii linux-signatures-nvidia-6.2.0-20-generic 6.2.0-20.20 amd64 Linux kernel signatures for nvidia modules for version 6.2.0-20-generic
ii linux-tools-common 6.2.0-20.20 all Linux kernel version specific tools for version 6.2.0

~$ dpkg --list |grep firmware
ii amd64-microcode 3.20220411.1ubuntu3 amd64 Processor microcode firmware for AMD CPUs
ii firmware-sof-signed 2.2.4-1 all Intel SOF firmware - signed
ii intel-microcode 3.20230214.0ubuntu1 amd64 Processor microcode firmware for Intel CPUs
ii linux-firmware 20230323.gitbcdcfbcf-0ubuntu1 all Firmware for Linux kernel drivers

But no backports:

~$ dpkg --list |grep backport
~$