Re: modeline syntax? Please hel
The problem is probably not the syntax, but the checks that the driver makes to compare your modeline with the EDID data received from the screen.
E.g. when your screen says "my native resolution is 1280x1024" and you send a modeline that says "use 1600x1200 resolution" the driver will reject the modeline.
You can turn that off with an option in the X configuration file.