2560x1440 not working..
I have a 17" Macbook Pro with Geforce 9600M GT.
It has a mini-DisplayPort and a resoltution of 1920x1200 on the internal LCD.
I want to attach a 27" Dell with a native resolution of 2560x1440.
With a mDP to DVI-d adapter and DVI-d cable, nvidia-settings allows to set a resultion up to 1600-something. Wtih mDP to HDMI adapter, I get to chose up to 1920x1080.
If I start X with the HDMI-Adapter and switch to DVI-d, the higher resolution is still working but when opening nvidia-settings it will not allow me to chose it.
How do I get full resolution? A mDP->DP adapter should arrive soon but it should have worked with the other two variants already.
Or is this just an auto-detection issue? Can I force a higher resolution somewhere?