Powerbook G4 and external monitor issue
I have a 27" Samsung monitor that I use with my PC. I use the HDMI cable for that, and there is a VGA port. So I got a male-male vga cable and plugged that into the Powerbook G4, using the dvi-vga dongle that came with the unit. Nothing comes up on the screen. The mnitor's remote control allows you to switch between TV, hdmi (other PC) and PC (vga). I tested the cable with a UMPC and another laptop I have and it works fine. Since that is the only external monitor port on the mac, I'm not sure if it is the dongle or the powerbook. Also, I can't get the F7 key with the multiple monitor icon on it to do anything, nor does detecting displays show the external monitor.
Added: I tried the dvi-hdmi adapter, and that works fine, so it isn't the powerbook - the detect displays shows up, with all the resolutions, etc. I am assuming it is the div-vga dongle. let me know if this sounds right.
Any suggestions would be appreciated.