Annotated edit history of DualHead version 5, including all changes. View license author blame.
Rev Author # Line
1 JasonDrake 1 Generally used to describe a video card capable of running two displays.
2 Also used to describe a computer set up with two displays connected
4 IanMcDonald 4 This page has been created primarily to link to some notes on how to acheive the latter of these
1 JasonDrake 5 two definitions
5 JohnMcPherson 7 There are basically two ways to acheive a dual head setup, you need either a DualHead video card (a video card that supports 2 displays), or use two cards to run the two displays (ie one display each).
1 JasonDrake 8
5 JohnMcPherson 9 The [X11] protocol has long had support for multiple cards. For the [XOrg] server, this is done by configuring multiple "Device" and "Screen" sections in the <tt>xorg.conf</tt> file.
1 JasonDrake 10
5 JohnMcPherson 11 For DualHead cards the setup is somewhat specific to the brand of card you have. For [XOrg] you can use its <tt>Xinerama</tt> extension, but some cards/drivers use their own method for dual head.
1 JasonDrake 12
2 JohnMcPherson 13 For an example of dual-head using Xinerama, (with the Intel i810/i915 graphics chipset + driver), see [i915-xorg.conf].
1 JasonDrake 14
3 JohnMcPherson 15 Nvidia based cards use their own method - see TwinView.
1 JasonDrake 16
2 JohnMcPherson 17 For Ati/radeon based cards see DualHeadAti.