After "sudo apt update-manager -c"
I get "Failed to download repository information".
sudo apt update gives 2 errors:
- ... lyx-devel/release/ubuntu ... does not have a Release file
- ... zoneminder-1.34/ubuntu ... does not have a Release file
but I have no idea what if anything I can do about this.
I think I can remove lyx-devel - don't use lyx now. I do use zoneminder though - I could get something else if necessary.
