Re: Stupid user tricks dual Radeon 7500 cards

[Alex Deucher <agd5f yahoo com>]

--- "K. S. Griffiths" <kgriffi siue edu> wrote:
> I'm not nearly as experienced with Linux as I'd like to be, try as I 
> might on my own I can't get dual head to work on my system.
> 
> Specs are PIII 733, Tyan Motherboard, one ATI Radeon 7500 in AGP
> slot, 
> second ATI Radeon 7500 in PCI slot.  I have one 15" LCD that supports
> 
> 1024x768 that I want to be my secondary monitor, and a 17" LCD that 
> supports 1280x1024 that I want to use as my primary.  Individual 
> desktops are preferred as I need the 1280x1024 resolution.  The 17"
> LCD 
> is physically below the 15" LCD.
> 
> The setup works under SuSE Linux just fine but SuSE was being a PITA 
> about some of the apps I need to use for my job.  Below is my
> XF86Config 
> with most comments edited out:
> 
> # XFree86 4 configuration created by redhat-config-xfree86
>  
>
[snip]
> 
> Section "Device"
>          Identifier  "Videocard0"
>          Driver      "radeon"
>          VendorName  "Videocard vendor"
>          BoardName   "ATI Radeon 7500"
> EndSection
>  
>  
> 
> Section "Device"
>          Identifier  "Videocard1"
>          Driver      "radeon"
>          VendorName  "Videocard Vendor"
>          BoardName   "ATI Radeon 7500"
>          BusID       "PCI:1:0:0"
> EndSection
>  
[snip]

you probably need to specify the busid of the PCI radeon card. 
PCI:1:0:0 is the agp card.  If that doesn't work, there was a problem
with certain combinations of multiple radeon cards in 4.3.  A fix went
in just after 4.3 was released and I don't know if the fix was included
in readhat's build.  If it is a problem with output detection you can
try the "monitorlayout" option which will force the output
configuration you want.  A xfree86 log would be helpful.

Alex




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