1. sudo apt install ppa-purge
2. sudo ppa-purge -o oibaf # or something like that!?
3. Reboot
Now tell us if the problem still happens. If it does then please:
4. dpkg -l > allpackages.txt
and send us the file 'allpackages.txt'.
5. sudo apt install mesa-utils
6. glxinfo > glxinfo.txt
and send us the file 'glxinfo.txt'.
Thanks!
To remove the PPA:
1. sudo apt install ppa-purge
2. sudo ppa-purge -o oibaf # or something like that!?
3. Reboot
Now tell us if the problem still happens. If it does then please:
4. dpkg -l > allpackages.txt
and send us the file 'allpackages.txt'.
5. sudo apt install mesa-utils
6. glxinfo > glxinfo.txt
and send us the file 'glxinfo.txt'.