Maybe it is a possibility...

There should be a problem with the auto detect function. Normally when it is set to auto the playfield pulse 1 sec and boot the correct game.

Maybe some linux gurus can help with that problem:

I try to use an ati grpahic card with soft 15khz. I add the modline and it works well on the normal lubuntu desktop! I create a file with following commands:
xrandr --newmode "640x480-15khz" 13.218975 640 672 736 840 480 484 490 525 -HSync -VSync interlace
xrandr --addmode DVI-1 "640x480-15khz"
xrandr --output DVI-1 --mode "640x480-15khz"
It works well but not with the pinbox software.
Now the problem is if I start the pinbox software than the software changes the resolution to normal 640x480 60Hz. I don't know how and where I have to set my working modeline as standard value.

It works fine when the pinbox emulator starts in a window (not in fullscreen).

Nobody?

I have to change the pinbox resolution to my new added resolution. But I really don't know where I can find it.

I don' t want to use a lcd display as long as the crt screen works fine.

No I am not using an ultimarc arcadevga it is a normal ATI radeon card. It works all fine with my card at a frequency of 15khz. The only thing is when the emulator starts in fullscreen the resolution and frequency changes to 60hz. Than I get a double screen. So I have to change the emulator resolution and frequency to my 15khz. But I don't know how I can do it.

Impossible...