I know it might be pushing the Mini a bit but I am using a 1680 x 1050 resolution display when booted into OS X. I'm not running this in conjunction with the Mini display, just the external on its own.
I have some cursor issues where the cursor will suddenly leave a static "ghost" on the screen, sometimes with a portion of the surrounding area of the screen. Sometimes this will disappear momentarily, sometimes I have to move a window over the ghost to make it disappear.
Has anyone else had this issue or have any possible solutions?
I used the Type11 install to put OS X onto a USB HDD and have copied all the kexts for the Mini from his install script into the EFI partition so I think the driver for the video should be the right one.
Dell Mini 9. 2GB RAM. 64GB Runcore SSD. 32GB SDHC. Novatel 3G WWAN.
Hacked MacBook Air SuperDrive. Real HD LED.
Quad booting OS X, Ubuntu 8.1, XP Pro and Windows 7.