I have been trying for quite some time now to make XFree86 4.1.0 (and other
versions) display both on a CRT and the LCD of a Dell Latitude CPt/V with a
Mach64 chipset. But so far I have only managed to get it to display on either
one but not both at the same time.
The Xserver (XFree86 4.1.0) tells me that the chip in question is a:
ATI 3D Rage Mobility
Chip type 4C4D "LM", version 4, foundry TSMC, class 0, revision 0x01
After having searched on google, google groups, Dell Tech support and reading
the XFree86 xpert archive I have still not come up with a solution.
It seems that it is difficult programming this chipset to do the "right thing"
within X. Something to do with controlling both the LCD and the CRT. M$
Windows on the other hand seems to have a simpler model and therefore have
implemented a working solution. (I might have gotten this wrong).
Using the same timing on both the external CRT and the LCD would be just fine.
Have this already been implemented in XFree85 4.1.0? Or is it never going to
be there because of difficulties?
Dell seem to be ignoring the problem for Linux. Here's an excerpt from the
user manual:
�NOTE: True Simul-mode (the ability to simultaneously display
video of the same content and resolution on both the computer
display screen and the external display) is not supported if
the system is booted to MS-DOS�, using a full-screen MS-DOS
session under a Microsoft Windows operating system, or the
ATI Mobility M1 video driver is not loaded. This limitation
may also be noted in operating systems other than Microsoft
Windows.�
Not having simultaneous display is very frustrating for the owner. She now has
to lecture with her back to her audience. All help with this is much
appreciated.
--
Eskil...
Unix Systems Administrator
Department of Informatics - University of Oslo, Norway
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