I have already reported as a bug in Ubuntu MATE 23.04, but not 100% sure its a bug. I always use the CLI to run my updates, so I did not notice this right away. Today the Software Updater showed up with the Message that not all updates can be installed, and offer to do a partial upgrade or continue. I then got an error message as in the screenshot. I did not proceed, so I tried to Mark all upgrades in Synaptic and I got a warning that several important system files would be removed, ubuntu-mate-desktop being one of them. I did not proceed.
I then tried sudo apt full-upgrade and got the same message.
I tried aptitude sudo aptitude full-upgrade and got the same results.
It could be that I should just wait and see if the issue will be resolved on its own. Its in a VM so its not hyper critical, but I am currently using that install to help find bugs etc.
mickee@mickee-VirtualBox:~$ sudo apt full-upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following package was automatically installed and is no longer required:
pipewire-jack
Use 'sudo apt autoremove' to remove it.
The following packages will be REMOVED:
pipewire-alsa pipewire-audio-client-libraries ubuntu-mate-core
ubuntu-mate-desktop
The following packages will be upgraded:
gstreamer1.0-pipewire libpipewire-0.3-0 libpipewire-0.3-modules
libspa-0.2-bluetooth libspa-0.2-jack libspa-0.2-modules pipewire
pipewire-bin pipewire-jack pipewire-pulse
10 upgraded, 0 newly installed, 4 to remove and 0 not upgraded.
Need to get 2,215 kB of archives.
After this operation, 482 kB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.
Any help to solve this will be greatly appreciated.