Using a HDTV as a Monitor

I sit across the room from my 46" TV and use a wireless keyboard. It's great! Alas, some Gnome and other Linuxy programs get confused by the TV's size and dimensions, so they display HUGE FONTS. On some programs, but not others. The last straw was when Emacs23 came out and I couldn't use it. But, now, it's all fixed!

Here's the magic jibberish from /etc/X11/xorg.conf:

Section "Monitor"
       Identifier      "Samsung" # LNA650

# from Samsung manual, for 1920x1080p:
        HorizSync    67.500
        VertRefresh  60.000
# http://www.mythtv.org/wiki/Specifying_DPI_for_NVIDIA_Cards
 Option    "UseEdidDpi"  "FALSE"
        Option "DPI" "100x100"
EndSection

This stanza gives you the old-school behavior so you can quickly test the X configuration. Hit Control-Alt-Backspace to restart the X server:

Section "ServerFlags"
# re-enable Control-Alt-Backspace to restart X server:
       Option          "DontZap"               "false"
EndSection

Thanks, Aun! http://ubuntuforums.org/showthread.php?t=1181631

EDIT: added "UseEdidDpi" line, to turn off the buggy DPI sensing, and use DPI=100 instead.