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Bug#420419: Current version (of xserver-xorg-video-intel) don't support dual-screen in dual-head



Brice Goglin wrote, On 12/23/-28158 02:59 PM:
> Ruben Porras wrote:
>   
>> If I add the Virtual option, I get the same effect as before
>> with Xinerama. If I remove the Virtual both monitors have the same copy
>> of the image.
>>
>> Neither of the is what I have before. Before I have two independent
>> monitors. It was not possible to move windows across them, etc. it was
>> not like Xinerama.
>>
>> So, I would not say that I can upgrade reteining the old behaviour :(
>>   
>>     
>
> That's right.
>
> Why do you need 2 independent screens?

For me, it's because I can't define DPI on a per display basis, only per
screen.

My laptop has a high DPI display (small physical size but high
resolution), requiring a higher (>96) DPI display setting for text to be
comfortably (physically) large (and sharp). I have a stand-alone display
that is physically large, but not very high resolution, so a lower
(<=96) DPI setting works to display more (if uglier) legible (physically
sizable) text. When using both the laptop and stand-alone display in a
multi-head configuration, it makes sense to maintain those DPI
properties, and right now that can only be done in a multi-/screen/
(/not/ multi-display (single-screen) (ala xrandr 1.2/xinerama))
configuration (since DPI is per screen, not per display).


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