If you update a laptop from Ubuntu 22.04.3 to 24.04.1 and the screen is blank with an ‘x’ cursor after login, do this:

1. control+alt+F1 to go to a tty and login, then:
2. sudo apt install --reinstall ubuntu-session

Further, if #thunderbird doesn’t launch, remove the snap installation and install de deb package directly from mozilla (he --purge is so that it doesn’t generate adn store a ~4 GB copy of the install). First, do:

$ sudo snap remove --purge thunderbird
$ sudo add-apt-repository ppa:mozillateam/ppa
$ sudo apt update

Then paste this below into a file ( /etc/apt/preferences.d/mozillateamppa-thunderbird ) to tell the apt system that you prefer mozilla’s over any other package:

Package: thunderbird*
Pin: release o=LP-PPA-mozillateam
Pin-Priority: 1001

… and install:
$ sudo apt install thunderbird

The same can be done for firefox if you’d rather skip the snap package.

#ubuntu #mozilla #thunderbird #firefox #linux