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Re: Intel 915GM dual screen (1280x1024 and 1024x768)

On Thu, Nov 6, 2008 at 5:18 PM, Peter Langfelder
<peter langfelder gmail com> wrote:
> On Thu, Nov 6, 2008 at 5:47 AM, Valent Turkovic
> <valent turkovic gmail com> wrote:
>> Hi,
>> I'm running Fedora 9 and Fedora 10 Linux (prerelase) on IBM R52 laptop
>> with Intel 915GM video chip.
>> I'm now using only one monitor - external 19" Samsung, but I would
>> like if possible to also use laptop's screen.
>> Is it possible to setup dual screen with external moninitor as main
>> monitor with resolution of 1280x1024 and laptop's monitor as secundary
>> monitor (1024x768).
>> I have been trying this using xrandr and also with configuring
>> xorg.conf but with no success :(
>> If got the logic right I need one virtual screen with size of
>> 2304x1024 (1280+1024). Laptop would be left to the main 19" external
>> monitor so I need to have main monitor use offset of 1024 pixels. Have
>> I made some wrong conclusions?
>> One thing is really puzzling me - and that is maximal virtual screen I
>> see from xrandr output:
>> Screen 0: minimum 320x200, current 1280x1024, maximum 2048x1024
>> So is it even possible to do dual screen with these resolutions on
>> Intel 915GM? Why? How?
> Valent,
> according to what I read, e.g., here
> http://www.thinkwiki.org/wiki/Xorg_RandR_1.2#Notes_from_xserver-xorg-video-intel.readme,
> the Intel GM cards before 965 only have 11 bit addresses for pixels
> and hence can only do 2048 pixels in either direction. Intel simply
> made a stupid design decision.
> Peter
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These are great links, thank you.

I looked and there is no intel read me in xorg usr/share/docs folders :(


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