Since a few days ago Thunderbird is also updated to 68.7 on Ubuntu 16.04 LTS.
I first encountered the bug with the black screen again. After rebooting it
works again now.
I also entered the apparmor-commands from above, but presumably they were not
necessary.
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You received this bug notificati
Thanks, using "usr.bin.thunderbird" did it. Before, I also did
sudo systemctl stop apparmor.service
sudo update-rc.d -f apparmor remove
sudo systemctl start apparmor.service
sudo update-rc.d apparmor defaults
but I am not sure, if this is related.
Should this be included in the installation process
I still encounter this error with version 68.2.2 on Ubuntu 18.04.3. I
also have an upgraded system from 16.04 like @grzesiekc. I removed
thunderbird and xul-ext-lightning and then reinstalled.
$ lsb_release -a
LSB Version:core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distribu
