@Kent, from the journal log on your reports to the error tracker your issue was
> gdm3[2173]: Gdm: GdmSession: no session desktop files installed, aborting...
which suggest some essential packages weren't installed correctly on your system (maybe an issue in the upgrade from a previous Ubuntu version?)
@Kent, from the journal log on your reports to the error tracker your issue was
> gdm3[2173]: Gdm: GdmSession: no session desktop files installed, aborting...
which suggest some essential packages weren't installed correctly on your system (maybe an issue in the upgrade from a previous Ubuntu version?)