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Re: how to determine number of displays



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LI Daobing wrote:
> Hello,
> 
> On Mon, Feb 25, 2008 at 10:54 AM, Rich Healey <healey.rich@gmail.com> wrote:
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>>  Hi list.
>>
>>  I'm playing with X on my asus M6 notebook, debian Lenny with bits of
>>  experimental and unstable to support KDE 4 (though i run E17 995 of the
>>  time, just wanted to play with KDE).
>>
>>  Anyway, i use dual screens at work, and just builtin at home, i was
>>  wanting to know if there's somethingi  can poll before X actually fires
>>  up to see what displays are attached?
>>
>>  My goal is to write an init script that wills start before entrance and
>>  symlink an appropriate xorg.conf for the number of screens attached to
>>  /etc/X11/xorg.conf ...
>>
> 
> I use a single /etc/X11/xorg.conf with a modifed Screen Section[1](add
> a Virtual line).
> 
> then use 'xrandr --output VGA --auto --output LVDS --auto --right-of
> VGA' to turn on dual head support.
> 
> [1]
> Section "Screen"
>         Identifier      "Default Screen"
>         Device          "Intel Corporation Mobile GM965/GL960
> Integrated Graphics Controller"
>         Monitor         "Generic Monitor"
>         DefaultDepth    24
>         SubSection "Display"
>                 Virtual 2560 1024
>                 Modes           "1280x800"
>         EndSubSection
> EndSection
> 
> 

Thanks right now i use Xrandr, but there are bugs (maximising windows
puts them half on each screen.)

On my debian desktop with an ATI card this works perfectly, so i'm
working towards that solution.

Is that screen section for the primary or secondary? do you only have
one screen line?

Don't get me wrong, xrandr works well, but i feel there's potential to
have it working better.
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