Re: Dual Head on Dell 640 ATI Radeon Mobility 7500

[Alex Deucher <agd5f yahoo com>]

does it work with two smaller modes (like 102x768 and 1024x768)?  I
think the max frambuffer size on radeon might be 2048x2048, that might
be where you corruption is coming from.  It might be able to be
extented to 4096x4096, but I'm not too familiar with that aspect of the
hardware.  the ati and radeon drivers are the same.  ati is just a
wrapper that calls the appropriate chip driver (mach64, r128 or
radeon).

Alex


--- Hugh Caley <Hugh_Caley affymetrix com> wrote:
> I'm having some problems getting dual head and Xinerama working on my
> 
> Dell 640 laptop.
> 
> The attached XF86Config will give me the two displays (second display
> is 
> a Dell 1024x768 LCD attached to the laptop's VGA port).  The primary 
> display has some artifacting but basically works.  The secondary
> display 
> is terribly artifacted, with streaky repetitions of some of the
> primary 
> display's elemenets, the cursor is a square, etc.  Nevertheless, I
> can 
> open a terminal on the primary display, drag it to the secondary 
> display, and use it, even if is very difficult to read.
> 
> Anyone have any suggestions?  I've tried both the "ati" and "radeon" 
> driver, and it doesn't seem to make a difference.  I've tried it with
> 
> the horiz and vert syncs specified, and not specified, and that
> doesn't 
> make a difference either.
> 
> lspci identifies the graphics chip as "ATI Technologies inc Radeon 
> mobility M7 LW [Radeon Mobility 7500].
> 
> I'm running Redhat 9.0; XFree86 is 4.3.0-2.  I've tried it running
> Gnome 
> and Windowmaker, no diff.
> 
> Hugh
> -- 
> Hugh Caley, Unix Systems Administrator
> Affymetrix Inc., 510-428-8537
> Hugh_Caley affymetrix com
> > # XFree86 4 configuration created by pyxf86config
> 



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