Now there is a failure due to the xorg PPA you are using.
deb http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu xenial main
Please also remove that PPA using ppa-purge and try the upgrade again. Thanks!
Now there is a failure due to the xorg PPA you are using.
deb http:// ppa.launchpad. net/oibaf/ graphics- drivers/ ubuntu xenial main
Please also remove that PPA using ppa-purge and try the upgrade again. Thanks!