Thanks for the bug report. It appears the system can't get an EDID over
the VGA port and so is defaulting to low resolution:
[ 6595.926] (II) modeset(0): EDID for output VGA-1
[ 6595.926] (II) modeset(0): Printing probed modes for output VGA-1
[ 6595.927] (II) modeset(0): Modeline
Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug. I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross
