Difference between revisions of "Visualization: graphics cards and 3D"

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  client glx vendor string: NVIDIA Corporation
 
  client glx vendor string: NVIDIA Corporation
 
</code>
 
</code>
 
----
 
 
Sometimes it is handy to configure two Desktops: one on a CRT monitor that can do stereo-graphics, and one on an LCD monitor for the more regular work, eg your refinement jobs with CCP4. For Nvidia cards you need to modify the xorg.conf file to have a section more or less like that:
 
 
<code>
 
Section "Monitor"
 
    Identifier    "Monitor0"
 
    VendorName    "Iiyama"
 
    ModelName      "Vision Master Pro 512"
 
    DisplaySize    450      330
 
    HorizSync      31.5 - 120.0
 
    VertRefresh    50.0 - 150.0
 
    Option        "dpms"
 
EndSection
 
Section "Monitor"
 
    Identifier    "Monitor1"
 
    VendorName    "Philips"
 
    ModelName      "150B"
 
EndSection
 
Section "Device"
 
    Identifier    "Videocard0"
 
    Driver        "nvidia"
 
    VendorName    "Videocard vendor"
 
    BoardName      "NVIDIA Quadro FX (generic)"
 
    BusId          "PCI:1:0:0"
 
    Screen        0
 
EndSection
 
Section "Device"
 
    Identifier    "Videocard1"
 
    Driver        "nvidia"
 
    VendorName    "Videocard vendor"
 
    BoardName      "NVIDIA Quadro FX (generic)"
 
    Option        "Stereo" "3"
 
    BusId          "PCI:1:0:0"
 
    Screen        1
 
EndSection
 
Section "Screen"
 
    Identifier    "Screen0"
 
    Device        "Videocard0"
 
    Monitor        "Monitor0"
 
    DefaultDepth    24
 
    SubSection    "Display"
 
        Viewport    0 0
 
        Depth      24
 
        Modes      "1024x768" "800x600"
 
    EndSubSection
 
EndSection
 
Section "Screen"
 
    Identifier    "Screen1"
 
    Device        "Videocard1"
 
    Monitor        "Monitor1"
 
    DefaultDepth    24
 
    SubSection    "Display"
 
        Viewport    0 0
 
        Depth      24
 
        Modes      "1600x1280" "1280x1024" "1024x768" "800x600"
 
 
</code>
 
 
Note that one can think this is rather silly to define two card, two monitors, two cards, and two screens.
 
However, that the only way I know that one monitor can be streo-enabled and the other one not.
 
  
  

Revision as of 10:48, 10 March 2008

graphics cards and drivers

  • NVidia (proprietary driver download for Linux at [1]; "Latest cards" list at [2], "Legacy cards" list at [3]). RedHat/Fedora/Debian/[K]Ubuntu installation information can be found at [4]. In particular, for RedHat/Fedora one needs to install the kernel-devel RPM package.

The proprietary driver works well but it needs a bit of care. On RedHat systems that are regularly booted, the following lines in /etc/rc.local result in the necessary parts of the driver being re-installed automatically after booting:

if [ ! -h /usr/lib/xorg/modules/extensions/libglx.so ]; then
  echo "re-installing NVIDIA driver. This takes some time. Ignore any warnings."
  /root/NVIDIA.run --no-network -s -n
fi

if [ ! -e /lib/modules/`uname -r`/kernel/drivers/video/nvidia.ko ]; then
  echo "installing NVIDIA kernel module. This takes some time. Ignore any warnings."
  /root/NVIDIA.run --no-network -s -K -n
fi

This requires that you first "chmod +x" the driver package (e.g. NVIDIA-Linux-x86-169.04-pkg1.run) downloaded from the NVidia site, and then establish a symbolic link from it, to /root/NVIDIA.run . If everything is ok with the driver you get the following output from "glxinfo|head":

name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:
   GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
   GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
   GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer
client glx vendor string: NVIDIA Corporation


3D