Also, please try downgrading to mutter version 3.32.0-1 by downloading *.deb from:
https://launchpad.net/ubuntu/+source/mutter/3.32.0-1/+build/16489975
and then install them with:
dpkg -i *.deb
Now reboot and tell us if that fixes the problem.
Also, please try downgrading to mutter version 3.32.0-1 by downloading *.deb from:
https:/ /launchpad. net/ubuntu/ +source/ mutter/ 3.32.0- 1/+build/ 16489975
and then install them with:
dpkg -i *.deb
Now reboot and tell us if that fixes the problem.