I had the same problem.
Used:
sudo dpkg --configure -a
sudo apt-get -f install
sudo apt-get update
sudo apt-get upgrade
But kept getting same errors.
Then ran:
sudo apt-get remove ubuntu-desktop ubuntu-artwork human-theme
(don't worry, removing ubuntu-desktop is okay)
Removed the three packages without trouble. Then run:
sudo apt-get install ubuntu-desktop ubuntu-artwork human-theme
It should also install a few more packages. I had 26 upgraded, 61 new install, 6 removed, and 332 not upgraded.
Then try running the four commands:
sudo dpkg --configure -a
sudo apt-get -f install
sudo apt-get update
sudo apt-get upgrade
That worked for me.
Good luck.
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