Did you nuke your Tuxedo OS install?
No, I'm still running it. Other than Sleep, everything else works mostly fine. Just the regular "linuxiness" here and there that's either easy to sort out, or easy to ignore.
What problems exactly did you have with Kubuntu?
Wow, that's a whole list... :D
On my laptop, I had zero touchpad gestures. Once I switched from X11 to Wayland I managed to get Firefox to handle pinch-to-zoom and forward/back, but nothing else and in no other application.
Bluetooth drivers were crap, made my $300 headphones sound like $10 headphones.
I accidentally set the wrong keyboard language during installation, changed it without any issues after signing in... But to this day that previous layout pops up on the login screen. The only advice I found online required quite heavy Terminal "hacking"... and didn't work anyway.
Updates are all over the place. They're coming in constantly, practically every day, often requiring a reboot. It also doesn't install any updates on its own, so even if there are smaller, security updates that don't require a reboot, you have to manually click through the notification and apply them. There was supposed to be another "hack" that makes it apply updates automatically, but it doesn't work.
I recently connected my Linux laptop to an external screen. All good, but... The login screen was displayed on both monitors. I clicked the login field on the external screen, started typing and nothing happened. Fiddled with that for a bit before, just out of curiosity, trying again, but this time fully on the laptop screen. Worked like a charm, zero issues.
That was the laptop. Then on my PC, I suddenly realised that I have not application menu (the one with "File", "View", "Edit", etc.). Just gone. Wasn't able to restore it.
Also, my secondary SSD would not stay mounted. Any time I rebooted, it was just gone - and that was a problem for me because I had my Steam library there and wanted to have Steam auto-starting on logon. That I was able to fix by editing fstab, but was still super annoying.
The move to Tuxedo OS was very smooth. Almost everything worked out of the box (still had to do the fstab bit), the Bluetoot driver is MUCH better, updates are more controlled. It's just this bloody Sleep feature that doesn't work. :D
Yeah, had a brain fart. It's a freeze.