I just got an Acer AL1916W 19" wide-screen monitor with a native resolution of 1440x900 though it is reported as 1400x1050. In a dual-head configuration it runs at 1400x1050, as the sole monitor it runs at 1280x1024. These are the only resolutions I have been able to get after hours of attempts and many different xorg.conf files. The resolutions are confirmed by both the Nvidia settings utility and the monitor OSD.
I'm running 32bit Ubuntu Edgy with driver version 9746 and I have a BFG 7600GT with 128MB of RAM. My current xorg.conf and Xorg.0.log file are attached, though I've tried many others. The driver seems to be rejecting 1440x900 as a valid mode with either explicit modelines or just a mode of 1440x900 specified. The line in the log is:
(WW) NVIDIA(0): No valid modes for "1440x900_60.00"; removing.
Any help greatly appreciated as this is getting very frustrating...