I almost completely redid my ThinkPad T540p Wednesday night. I have 5 partitions, each for a different Linux distro, and had to reinstall 4 of them. I'm nearly done (98+%) getting them all configured back to normal usability. Distros are Mint 21, Bodhi 6, Ubuntu 22.04 Mate, Linux Lite 6, and Peppermint OS.
@hehemrin still working on it. Definite changes in the shift to Bullseye. The updater is really cool but uninformative - it runs a terminal script, and you don't get to learn the changes unless you look at the log.