双nVidia GPU (3台显示器)在11.10中无法工作

Question

在寻找之后，我还没有找到解决办法。

我有两个英伟达象限295卡与3显示器，但我不能延长双视图跨越多个GPU。

我已经安装了最新的nvidia专有驱动程序，它们在单个GPU /双显示器上工作得很好。我试过使用xinerama，但没有成功。

我不介意切换到新的司机，如果这将处理我的多显示器，虽然我想继续使用统一和紧凑，如果我可以)。

Answer 1

多亏了一位同事，我才能把这件事办好。这是我的xorg.conf文件。这需要gnome2和专有的nvidia驱动程序。

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    Screen      2  "Screen2" RightOf "Screen1"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "1"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "Files"
EndSection

Section "Module"
    Load "glx"
EndSection

Section "Extensions"
    Option "Composite" "Disable"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "HP w2207"
    HorizSync       24.0 - 82.0
    VertRefresh     48.0 - 76.0
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "HP w2207"
    HorizSync       24.0 - 82.0
    VertRefresh     48.0 - 76.0
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor2"
    VendorName     "Unknown"
    ModelName      "HP w2207"
    HorizSync       24.0 - 82.0
    VertRefresh     48.0 - 76.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro NVS 295"
    BusID          "PCI:2:0:0"
    Screen          0
    Option         "Rotate" "CCW"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro NVS 295"
    BusID          "PCI:2:0:0"
    Screen          1
    Option         "Rotate" "CCW"
EndSection

Section "Device"
    Identifier     "Device2"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro NVS 295"
    BusID          "PCI:3:0:0"
    Option         "Rotate" "CCW"
    Screen          0
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection


Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-1: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen2"
    Device         "Device2"
    Monitor        "Monitor2"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Answer 2

事实证明，“团结”和“辛尼拉玛”不再是一起玩得很好了，因为“心拉玛”和“作曲”不能同时运行。除非伦朗接管多个gpu，或者直到twinview变得更聪明，否则大多数较新的窗口管理器都不可能拥有多个gpu (Gnome3也有同样的问题)。

我试着倒退到but经典，让它开始工作，但我厌倦了去搞它。它会在所有三个屏幕上复制相同的屏幕，但不会把它们当作一个大屏幕。遗憾的是，在xorg.conf中，没有真正的好例子来说明如何让它工作。

因此，对于其他人来说，你是在推动一条关于统一/Compiz的绳子。您也许可以让它在Ubuntu中工作，但是要做好战斗的准备。

这太可悲了。如果我能让Windows 7在这个机器上运行，我会使用它并在VM中运行linux。这就是人们要让这些东西在多GPU系统上运行所必须做的事情。

Answer 3

Nvidia已经实现了一个名为Mosaic的解决方案。马赛克可以工作在SLI，或SLI能力的卡，但没有SLI连接。这些被称为SLI马赛克和基地马赛克按该顺序。您可以搜索Option BaseMosaic来查找文档、注意事项等。

我可以成为一个幸运的人，他的卡是“不被批准的SLI”。感谢Nvidia让Linux用户成为二等公民-- Windows在相同的硬件上工作得很好--这对于购买两张卡片来说是一个很好的奖励！

(EE) NVIDIA(0): Failed to find a valid Base Mosaic configuration.
(EE) NVIDIA(0): Invalid Base Mosaic configuration 1 of 1:
(EE) NVIDIA(0): GPUs:
(EE) NVIDIA(0):     1) NVIDIA GPU at PCI:1:0:0
(EE) NVIDIA(0):     2) NVIDIA GPU at PCI:2:0:0
(EE) NVIDIA(0): Errors:
(EE) NVIDIA(0):     - The video link was not detected
(EE) NVIDIA(0):     - Unsupported GPU
(EE) NVIDIA(0):     - Chipset not approved for SLI
(WW) NVIDIA(0): Failed to find a valid Base Mosaic configuration for the
(WW) NVIDIA(0):     NVIDIA graphics device PCI:1:0:0. Please see Chapter 29:
(WW) NVIDIA(0):     Configuring SLI and Multi-GPU FrameRendering in the README
(WW) NVIDIA(0):     for troubleshooting suggestions.
(EE) NVIDIA(0): Only one GPU will be used for this X screen.