The nvidia settings GUI is quite broken with regards to twinview. I solved this problem by disabling "nvidia-auto-select," manually setting the resolution in my xorg.conf file (after backing up the file, of course), and restarting X.
Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "1" Option "TwinViewXineramaInfoOrder" "DFP-0" # [BROKEN ENTRY] Option "metamodes" "CRT: 1360x768 +1440+0, DFP: nvidia-auto-select +0+0; CRT: NULL, DFP: nvidia-auto-select +0+0" # NEW ENTRY FOLLOWS: Option "metamodes" "CRT: 1440x900 +1440+0, DFP: 1440x900 +0+0; CRT: NULL, DFP: nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection This probably isn't elegant and I may not have the line exactly right, but it works. RichTL -- External display - 1440x900 resolution not detected https://bugs.launchpad.net/bugs/293209 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs