I have a similar problem. My laptop resolution is 1920x1440 and I have a monitor with 1680x1050 (Dell FPW2005). My xorg.conf has the following resolutions listed: Modes 1920x1440 1680x1050 And in my Monitor section, I have the correct modeline for the FPW2005. When I boot my laptop not connected to the monitor, X starts up in 1920x1440 correctly, but if I boot with the monitor plugged in, I get no signal to my monitor. ctrl-shift-+ and ctrl-shift-- don't do anything. I had it setup in FC4 where if my monitor was plugged in, X would still start, but the resolution would be 1080x1050, but the desktop size was 1920x1440 and I just had the KDE resolution manager resize it upon login. That was an acceptable solution, I guess, but now whenever I switch between my laptop screen and monitor, I have edit my xorg.conf by hand. Any help is appreciated, thanks. Ketut Mahaindra wrote: > I have a Dell Latitude D610 running FC5 with all latest updates and also > kmod-fglrx to support the ATI card on the laptop. > At work I need from time to time to switch between the laptop LCD > display to an external monitor and vice versa. > This normally facilitated with a shortcut key on the keyboard Fn+F8. > > However, I have not been able to get it working with FC5 so far. > If I connected the external monitor to the laptop VGA output port I > always have both the laptop LCD and the external monitor displaying at > the same time. > And the laptop LCD is working at 1400 x 1050 pixels while the external > monitor can only support 1280 x 1025 which causes the desktop display to > be cropped. > > Any clues on how to make the configuration so that FC5 will be able to > switch normally between the display and to make it support different > resolution automatically? > Thanks in advance >