User`s guide

??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????+???????????????????????×?????????????????????????????????????????????????−26217
NVIDIA Graphics Configuration
56 RedHawk Linux Version 5.4 Release Notes
• This mode causes a little extra overhead for X.
Xinerama requires entries in xorg.conf to describe the layout of the screens to the X
server and the setting of the server flag, “Xinerama” “1”.
Xinerama is done by the X server and does not require the use of NVIDIA, but only
configurations based on NVIDIA and the nvidia-settings utility are covered in this
document.
7.3.3 MultiDesktop
MultiDesktop mode enables multiple X Screens displayed as separate Desktops on each
monitor. This mode has the following characteristics:
• A separate X Screen for each display is used.
• The mouse moves freely between displays.
• If you maximize a window, it fills a single display.
• You can not drag objects from one display to another.
• This causes a little extra overhead for X.
This requires entries in xorg.conf to describe the layout of the screens to the X server
and the setting of the server flag, “Xinerama” “0”, or by the omission of the Xinerama
server flag.
MultiDesktop is done by the X server and does not require the use of NVIDIA, but only
configurations based on NVIDIA and the nvidia-settings utility are covered in this
document.
7.3.4 Twinview
Twinview mode allows you to display a single Desktop that spans two monitors or to clone
the output and display a duplicated Desktop on each monitor. This mode has the following
characteristics:
• The mouse moves freely between displays.
• If you maximize a window, it expands across both displays unless you:
- set a special flag which emulates the behavior of Xinerama
- operate in clone mode
• In clone mode, the monitors display exactly the same image.
• You can drag objects from one display to another unless you are operating in
clone mode.
• Twinview mode causes no extra overhead for X.
The NVIDIA driver conceals all information about multiple display devices from the X
server; as far as X is concerned, there is only one X Screen.
All display devices share one frame buffer. Thus, all the functionality present on a single
display (e.g., accelerated OpenGL) is available with Twinview.
Twinview only works on a single GPU with multiple heads. It will not work between
separate cards or heads with different BusIDs (like Xinerama can).