Dual Head

[Anders Storsveen]

Matthieu Herrb wrote:

> Björn Nilsson wrote:
>
>> I tried to get this working a year ago, and didnt succed. I ended up
>> bying a second PCI radeon card and starting up a second X server on
>> that by specifying its PCI-id.
>>
>> using this xorg.conf:
>> http://bni.dyndns.org/xorg.conf
>>
>> And start the second X server like this:
>> X -ac -nolisten tcp -layout Layout1 :1 & DISPLAY=:1 xine --fullscreen
>> --no-splash --hide-gui --auto-play $1
>>
>> Only one head can be "active" at the same time, the picture shows up
>> at either the TFT or the TV. Mouse and keyboard input is sent to the
>> "active" x server.
>>
>> I am also very interested in getting this to work on 1 dual head card
>> only, if possible at all.
>>
>> On 10/2/05, Andrew Clayton <andrew at digital-domain.net> wrote:
>>
>>> Hi there,
>>>
>>> Is it possible with a single dual head card (say a Radeon 9250) to
>>> run a
>>> separate X server on each head?. IIRC this means that both heads share
>>> the keyboard/mouse, but windows can't move between/span screens as in
>>> Xinerama.
>>>
>>> Just checking before I make any purchase.
>>
>
> Running two X servers in this configuration will probably not work.
> The two heads of the card share some resources and I'm not sure if the
> X servers will be able to cooperate on those.
>
> I don't understand why just running one X server in multi head mode
> with Xinerama disabled doesn't do what you want. In this mode you get
> two screens :0.0 and :0.1. Windows are explicitely attached to one of
> the screens and cannot be moved to the other screen without magic.
>
> This mode should work with the radeon 9250 (I'm using a radeon 9200 is
> this configuration): just set up 2 device sections for the 2 pci
> devices that show up (1:0:0 and 1:0:1) and 2 screen sections. See the
> radeon(4) manual page for configuration details.


it would seem that the whole dual head/more screen architecture in X is
like a few decades behind the support in windows/osx :/ not very
standardized, supported and easy :(