Hello,
My understanding is this chipset (I have an Inspiron) was better supported in
XF 3.3.6 !! The 'reasoning' appears to be that this chipset is now too old to
bother with !! This goes for 3D acceleration as well which seemed to be fully
supported in 3.3.6 !! All I can think is to try good old 3.3.6.
Owen
On Thursday 20 Sep 2001 7:01 pm, you wrote:
> 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.
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