In short: I am unable to add any language; I tried several different ones. There is no error message, nothing. I click on Add, then choose "German, Germany," then Install - the pop-up closes and nothing happens.
Now, when I deleted the to me useless English versions it took a reboot for them to vanish. But the reboot didn't magically also bring German. Curiously, in the Language Settings overview, it still shows "9 Languages installed" - even though there are only 4 left when I click through to Install/Remove Languages.
And idea what may be going on?
(This is on my LM 21.1 cinnamon Mac laptop.)
EDIT: Attempted to install German via the terminal.
With this line: sudo apt-get upgrade *lang*de
In short, it didn't work. I can't copy the whole screen output, because it's too long (I got an error message, because my total message would have been over 176 thousand (!) characters.) There's info at the end why it may not have worked, but I don't understand it:
It started out with this:Calculating upgrade... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
libopencl-clang-12-dev : Conflicts: libopencl-clang-x.y-dev
libopencl-clang-dev : Conflicts: libopencl-clang-x.y-dev
E: Broken packages
and then a gazillion lines similar to this one, all starting with "Note, selecting", no further error messages, except the one at the end.Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'golang-github-munnerz-goautoneg-dev' for glob '*lang*de*'
Lastly: I just tried to do the same on my 19.3 machine, no problems whatsoever.