Today I wanted to upgrade from LTS to LTS. I performed
and started the upgrade. However, after having downloaded all files and running the installation, the upgrade failed, or at least it failed partially. There is some erroneous behavior regarding graphics and window management. The two screenshots show the behavior, something similar to what we know from Windows...
I had the hope, that an additional
apt-get update apt-get upgrade
would install remaining (potentially missing) packages, but the list is quite empty
Get:1 http://de.archive.ubuntu.com/ubuntu xenial InRelease [247 kB] Hit:2 http://archive.canonical.com/ubuntu xenial InRelease Ign:3 http://archive.canonical.com precise InRelease Hit:4 http://security.ubuntu.com/ubuntu xenial-security InRelease Hit:5 http://archive.canonical.com precise Release Hit:7 http://de.archive.ubuntu.com/ubuntu xenial-updates InRelease Hit:8 http://de.archive.ubuntu.com/ubuntu xenial-backports InRelease Fetched 247 kB in 1s (220 kB/s) Reading package lists... Done W: http://archive.canonical.com/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
and everything is installed. I have the impression, that I need to redo, or at least somehow continue the failed upgrade, but I don't know how to. The two approaches I tried didn't yield anything:
sudo apt-get -f dist-upgrade
says, there is nothing to install. And
sudo update-manager -d
tells me, that I'm up to date.
Any ideas, how I can fix this problem?