Some slight hiccups (Gnome version)
I updated my work machine from 20.04.4, Secure boot, Gnome 3.36.8 with X11 to 22.04.1 Gnome 42.2 with Wayland
Using the command line method which essentially are:
sudo apt update
sudo apt upgrade
reboot
sudo do-release-upgrade
The upgrade was successful. The most visible change was the switch from Gnome 3.36.8 on X11 to Gnome 42.2 / Wayland. The computer works almost like before. The distro upgrade had disabled some 3rd party repos. Which I fixed by manually uninstalling the app and reinstalling again connecting to the new repo jammy instead of focal. Example: terraform, helm.
The hiccups I got were minors which I guess were caused by the switch from X11 to Wayland:
1- Bitwarden (snap app) no longer show up. Fixed by uninstall + reinstall
2- Firefox, same as above. Except that I installed a non-snap version. Not that I am against snap (I don't mind the slight slow startup), but in the moment of panic, I found a tutorial installing Fixefox https://www.omgubuntu.co.uk/2022/04/how-to-install-firefox-deb-apt-ubuntu-22-04. As Firefox works OK so I just leave it as is.
3- The app icons in the top status bar (Slack, Teams, OpenLens, etc.) are all lost. Gnome extension seems to still work because the custom theme is still working.
4- Flameshot is permanently non-functional
5- pass requires `apt install wl-clipboard`
6- ZSH autosuggestions plugin works but the FG color of the suggested syntax is white instead of dimmed gray. This becomes confusing as this gives the impressiont hat you have already type the suggested text.
Overall the computer is functional, I can works as before startup apps, Git, Tmux, GPG, dev tools seems to work as before.
In spite of the hiccups, I'd say the upgrade was successful. The above minor issues are fixable or would have workable alternatives.
Right now I would say that I don't like the Libwaita theme of native Gnome4 apps such as the "text Editor 42.2". It's titlebar is all black not respecting the colored titlebar of the custom theme. Its confusing like hell because when several windows overlap it's hard to tell them apart.
I think I am going to switch from Gnome to KDE. Currently playing around with KDE on a separate machine. Find KDE more logical, at least suits me better in terms of config. Not sure if this is worth the efforts though.