Can anyone help me get *simultaneous* display of the LCD screen and
an external monitor on a Dell Latitude CPx-H laptop that's running
Dell-installed RedHat Linux 6.1? The keyboard function key for
toggling the display will switch from LCD to external, but will not
do both together.
This seems to be a driver thing, as I have set up the machine to dual-
boot to Windows 98 and under that OS, the function key switches
through three states (internal, external, and both). I was surprised
to find that this did not work "out of the box" with Dell's Linux
The CPx-H is purported to have an ATI Mobility M1 video controller
and Linux is using the XF86_Mach64 driver. The XFree86 stuff is
I've read stuff in this group and other places about dual-display on
laptops, but these seemed to be related to the NeoMagic driver -
which is/was used on other Dell models?
Does anyone have simultaneous LCD/CRT display going on the CPx-H?
Roger Williams, Institute of Geological & Nuclear Sciences, New