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List:       xfree86
Subject:    Re: [XFree86] Dual Screen not working, help?
From:       Tamas Hauer <tamas.hauer () gmail ! com>
Date:       2004-08-28 22:58:20
Message-ID: 732b6cde04082815584fb66a59 () mail ! gmail ! com
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Hi, 

I have played some more with various tweaks and still no success :-(.  

BUT, I verified that my X configuration is probably OK.  Driving my
primary (AGP) card with "r128" (the same as "ati" as far as I can
tell) and driving the secondary with "vga" starts X dual head
properly.  Unfortunately I get the default 320x200 resolution on the
vga only.

Thus this must be a driver issue.  I have tried with "ati" and "vesa"
which gets me "somewhere" with the right constellation of stars.  For
example it does matter, which screen comes first in the layout
section.  If the ati one comes first, there is no signal on the second
screen.  If the vesa one comes first then both screens come up but the
second one is garbled and unresponsive.

Thus I can see a few ways of progressing:
1. this thing just won't work no matter what I do (most likely :-( )
2. replace "vga" with something better resolution which is viewable
3. I noticed dependency on the acpi settings and although I think I
have exhausted all variations, if I get a clue I can look into this
again.

Thus I am stuck in a major way.  Thanks for all the help so far and of
course any further clues are appreciated.

Tamas


On Tue, 24 Aug 2004 04:10:14 -0500, Orlando Dancourt Masias
<scanray1@yahoo.com> wrote:
> Hi Tamas:
> 
> This file work for me. (I can activate the TV, but, is blue. :(( Im going to
> post the problem). I has configured to use the video in dualview.
> Look that I use "BusID". The numbers are the location of the board. I Have
> AGP. Disable "Xinerama". Somems times dont work and cause errors.
> Run "startx -- -logverbose 5". This is very helpfull to resolve errors.
> 
> Orlando
> 
> 
> 
> 
> Hi Orlando,
> 
> > Try to set the "virdual screen" in duble size orizontal. In others words, if
> > your screen mode is set to 800x600, set the virtual to 1600x600. That has
> > worked for me, using 2 nvidia. Later I have buyed a dual card. :) same
> > problem, but, changing the virtual has solved the problem. :)
> 
> Thanks for the suggestion but it does not seem to help.  When I start with
> this:
> 
> Section "ServerLayout"
>         Identifier     "Xine"
>         Screen      0  "Screen0" 0 0
>         Screen      1  "Screen1" RightOf "Screen0"
>         Option         "Xinerama" "on"
> EndSection
> 
> Then the second monitor does not even seem to pick up any signal,
> while it does perfectly with this:
> 
> Section "ServerLayout"
>         Identifier     "Second"
>         Screen      0  "Screen1" 0 0
> EndSection
> 
> Any further clues?? :-(
> 
> On a side note, I found the source of the inconsistent behavior
> mentioned in my original post.  Apparently the way it goes wrong
> depends on acpi paramenters on the kernel.  I have tweaked with
> various combinations of pci=noacpi, acpi=off/on but did not get much
> further.
> 
> Have you guys have a general suggestion for what the acpi settings on
> the kernel should be for best results?
> 
> thanks,
> 
> tamas
> 
> 
> 


-- 
------------------------------------------------------------------------------
Tamás Hauer 
ETT Division, CERN, Geneve 23 Switzerland 1211
Tel: (+41)-22-767-0772, Fax: (+41)-22-767-8930
http://cern.ch/tamas.hauer

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