Dual monitor setup using ATI HD3450
This is the first time I've tried to use two monitors, and so far I haven't had any success. I'm running Mandriva 2009, with the 188.8.131.52 kernel; my graphics card is an ATI Radeon HD3450 (there's an onboard nVidia card as well, but I'm not trying to use it - which is good, because Mandriva doesn't seem to recognise that it's there anymore ;)). I've got two generic CRT monitors, one in the HD3450's VGA port, and one in the DVI port via a DVI-to-VGA adaptor.
The graphical config in Mandriva doesn't give me any option to configure dual display at all - it doesn't even mention the possibility of switching on xinerama. I've therefore been trying to get it working by editing my xorg.conf (copying examples from the web), but so far, each time I've tried loading my new xorg.conf, X wont start at all.
I'm attaching both my old xorg.conf file, which doesn't even try to support two monitors, but does work with one, and my new one, which tries to support two monitors, but doesn't work at all!
Any thoughts gratefully received.
Thanks for your time