Some of the information in this bug report is no longer true. The default dpi is no 96 instead of 75. More importantly, the syntax is no "0=" rather than "command=".
Also, if no -dpi is given in the gdm.conf file, gdm will still pass the -dpi 96 argument. That means the only way to have X use the DisplaySize value of the xorg.conf file, or information from the screen, is to specify the arguments in gdm.conf but to leave out -dpi. I think this should be clearly documented, preferably in the gdm.conf file itself since it doesn't even contain a "0=" line by default. -- Vincent Lönngren <[EMAIL PROTECTED]>