143 lines
4.8 KiB
HTML
143 lines
4.8 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta name="generator" content=
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"HTML Tidy for Linux/x86 (vers 1 September 2005), see www.w3.org">
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<meta http-equiv="Content-Type" content=
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"text/html; charset=us-ascii">
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<title>Chapter 14. Configuring Multiple X Screens on One
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Card</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.68.1">
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<link rel="start" href="index.html" title=
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"NVIDIA Accelerated Linux Graphics Driver README and Installation Guide">
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<link rel="up" href="installationandconfiguration.html" title=
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"Part I. Installation and Configuration Instructions">
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<link rel="prev" href="xineramaglx.html" title=
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"Chapter 13. Configuring GLX in Xinerama">
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<link rel="next" href="xrandrextension.html" title=
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"Chapter 15. Support for the X Resize and Rotate Extension">
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</head>
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<body>
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<div class="navheader">
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Chapter 14. Configuring
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Multiple X Screens on One Card</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href=
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"xineramaglx.html">Prev</a> </td>
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<th width="60%" align="center">Part I. Installation and
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Configuration Instructions</th>
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<td width="20%" align="right"> <a accesskey="n" href=
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"xrandrextension.html">Next</a></td>
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</tr>
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</table>
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<hr></div>
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<div class="chapter" lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title"><a name="configmultxscreens" id=
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"configmultxscreens"></a>Chapter 14. Configuring Multiple
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X Screens on One Card</h2>
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</div>
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</div>
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</div>
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<p>GPUs that support TwinView (<a href="configtwinview.html" title=
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"Chapter 12. Configuring Multiple Display Devices on One X Screen">Chapter 12,
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<i>Configuring Multiple Display Devices on One X Screen</i></a>)
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can also be configured to treat each connected display device as a
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separate X screen.</p>
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<p>While there are several disadvantages to this approach as
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compared to TwinView (e.g.: windows cannot be dragged between X
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screens, hardware accelerated OpenGL cannot span the two X
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screens), it does offer one advantage over TwinView: If each
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display device is a separate X screen, then properties that may
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vary between X screens may vary between displays (e.g.: depth, root
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window size, etc).</p>
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<p>To configure two separate X screens to share one graphics card,
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here is what you will need to do:</p>
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<p>First, create two separate Device sections, each listing the
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BusID of the graphics card to be shared and listing the driver as
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"nvidia", and assign each a separate screen:</p>
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<pre class="screen">
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Section "Device"
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Identifier "nvidia0"
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Driver "nvidia"
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# Edit the BusID with the location of your graphics card
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BusID "PCI:2:0:0"
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Screen 0
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EndSection
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Section "Device"
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Identifier "nvidia1"
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Driver "nvidia"
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# Edit the BusID with the location of your graphics card
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BusId "PCI:2:0:0"
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Screen 1
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EndSection
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</pre>
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<p>Then, create two Screen sections, each using one of the Device
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sections:</p>
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<pre class="screen">
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Section "Screen"
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Identifier "Screen0"
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Device "nvidia0"
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Monitor "Monitor0"
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DefaultDepth 24
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Subsection "Display"
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Depth 24
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Modes "1600x1200" "1024x768" "800x600" "640x480"
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EndSubsection
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EndSection
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Section "Screen"
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Identifier "Screen1"
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Device "nvidia1"
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Monitor "Monitor1"
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DefaultDepth 24
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Subsection "Display"
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Depth 24
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Modes "1600x1200" "1024x768" "800x600" "640x480"
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EndSubsection
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EndSection
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</pre>
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<p>(Note: You'll also need to create a second Monitor section)
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Finally, update the ServerLayout section to use and position both
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Screen sections:</p>
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<pre class="screen">
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Section "ServerLayout"
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...
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Screen 0 "Screen0"
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Screen 1 "Screen1" leftOf "Screen0"
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...
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EndSection
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</pre>
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<p>For further details, refer to the xorg.conf man page.</p>
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</div>
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<div class="navfooter">
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<hr>
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href=
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"xineramaglx.html">Prev</a> </td>
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<td width="20%" align="center"><a accesskey="u" href=
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"installationandconfiguration.html">Up</a></td>
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<td width="40%" align="right"> <a accesskey="n" href=
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"xrandrextension.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">
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Chapter 13. Configuring GLX in Xinerama </td>
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<td width="20%" align="center"><a accesskey="h" href=
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"index.html">Home</a></td>
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<td width="40%" align="right" valign="top">
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Chapter 15. Support for the X Resize and Rotate
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Extension</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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