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Haswell graphics + Dell docking station → how to disable the "seamless dual screen mode"?

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01 Staff's picture
01 Staff (not verified)

Jan 31, 2014 - 02:38pm

  • 01 Staff's picture
    01 Staff (not verified)


    I am trying to configure two1920x1200  screens with a Dell E7440 notebook and E-Port Simple II docking station. One of the monitors is connected to DVI output, another monitor is connected to the DisplayPort output. The laptop runs Debian testing, which is probably part of a problem, but still... Here's the problem:

    I do not see two screens. Instead, xrandr outputs a 'virtual' screen 3840x1200 that is a combination of my two screens. But I want two independent screens! Any idea how to have them?

    ~$ xrandr

    ... skip...
    DisplayPort-1 connected 3840x1200+0+0 (normal left inverted right x axis y axis) 546mm x 352mm
       1920x1200      60.0 +
       3840x1200      60.0*
       2560x1024      60.0 


    $ lspci -nn | grep VGA

    00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b)

    xserver-xorg-video-intel 2:2.21.15-1+b2 amd64

    Jan 31, 2014 - 02:38pm
  • kovon's picture
    kovon (not verified)



    I have exactly the same problem, can not find anything regarding this problem on the internet. Did you have any luck yet fixing this problem?

    May 01, 2014 - 07:14am
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