I have the same bug in a Packard Bell EasyNote MX35 with an Intel 945GM (I guess).
The problem could be solved specifying the DPI by hand to the X server in the /etc/gdm/gdm.conf. You have to change the lines:
[server-Standard] name=Standard server command=/usr/bin/X -br -audit 0
by...
[server-Standard] name=Standard server command=/usr/bin/X -br -dpi 75 -audit 0
I have the same bug in a Packard Bell EasyNote MX35 with an Intel 945GM (I guess).
The problem could be solved specifying the DPI by hand to the X server in the /etc/gdm/gdm.conf. You have to change the lines:
[server-Standard]
name=Standard server
command=/usr/bin/X -br -audit 0
by...
[server-Standard]
name=Standard server
command=/usr/bin/X -br -dpi 75 -audit 0