More interesting information to report. If I start X using the laptop's display (no external monitor plugged in) and a laptop-specific XFConfig-4 file, I can then plug the external monitor in and get whatever resolution the laptop display is at. If I then quit X and try to start it again, I get a "no screens found" message and X won't start. Now I'm really confused. -Raj xfree86-list-request@redhat.com wrote: > Hi. I'm trying to get an external monitor (Sony > Multiscan 400PS) working with a Dell Latitude 610 > laptop running RedHat 7.2. I've got Mark Harris' > RPMs of XFree86 installed: > > [rs@lucknow rs]$ rpm -qa | grep -i xfree86 > XFree86-ISO8859-15-100dpi-fonts-4.1.0-3 > XFree86-4.1.99.2-0.2.3 > XFree86-xf86cfg-4.1.99.2-0.2.3 > XFree86-75dpi-fonts-4.1.0-3 > XFree86-ISO8859-15-75dpi-fonts-4.1.0-3 > XFree86-xfs-4.1.99.2-0.2.3 > XFree86-tools-4.1.99.2-0.2.3 > XFree86-xdm-4.1.99.2-0.2.3 > XFree86-Xvfb-4.1.99.2-0.2.3 > XFree86-100dpi-fonts-4.1.0-3 > XFree86-libs-4.1.99.2-0.2.3 > XFree86-twm-4.1.99.2-0.2.3 > > Running Xconfigurator, I can get X to start at > 640x480 resolution at 8, 16, and 24-bit color depth, > but no other resolution will work. Any clues for me?