In the meantime, if you're using 7.10, you could play with "screens and graphics" found...
System >> Administration >> screens and graphics
Perhaps comparing the screen of the monitor/laptop to a similar laptop/monitor would allow you to change the resolution. This more of a manipulation of the xorg file, but it gets rid of the low resolution if you get a good enough, ad-hoc replacement.
Remember to backup the xorg.conf file first
Quote:
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sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf-agentxbackup
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If you need to put it back...
go into tty with "alt+ctrl+f1"
afterwards, login if necessary, then use the following
Quote:
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sudo mv /etc/X11/xorg.conf-agentxbackup /etc/X11/xorg.conf
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Reboot the computer after that. Or restart GDM.