我使用的是 Ubuntu 14.04LTS，配备 2 个显卡（amd firepro W600）和一个桌面上的 12 个屏幕（每个显卡上有 6 个屏幕，分辨率为 1920x1080）。
但在新安装的 ubuntu 18.04 上使用自动检测无法显示超过 8 个屏幕。“xrandr”命令显示每个屏幕，但最大总尺寸为 16384x16384
我的 xorg.conf 文件在 ubuntu 14.04 上运行：
Section "ServerLayout"
Identifier "amdcccle Layout"
Screen 0 "amdcccle-Screen[1]-0" 0 0
Screen "amdcccle-Screen[2]-0" 11520 0
Option "Xinerama" "1"
EndSection
Section "Monitor"
Identifier "0-DFP1"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP5"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "1920 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP9"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "3840 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP13"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "5760 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP17"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "7680 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP21"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "9600 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-DFP1"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-DFP5"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "1920 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-DFP9"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "3840 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-DFP13"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "5760 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-DFP17"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "7680 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-DFP21"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "9600 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Device"
Identifier "amdcccle-Device[1]-0"
Driver "fglrx"
Option "Monitor-DFP1" "0-DFP1"
Option "Monitor-DFP5" "0-DFP5"
Option "Monitor-DFP9" "0-DFP9"
Option "Monitor-DFP13" "0-DFP13"
Option "Monitor-DFP17" "0-DFP17"
Option "Monitor-DFP21" "0-DFP21"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "amdcccle-Device[2]-0"
Driver "fglrx"
Option "Monitor-DFP1" "1-DFP1"
Option "Monitor-DFP5" "1-DFP5"
Option "Monitor-DFP9" "1-DFP9"
Option "Monitor-DFP13" "1-DFP13"
Option "Monitor-DFP17" "1-DFP17"
Option "Monitor-DFP21" "1-DFP21"
BusID "PCI:2:0:0"
EndSection
Section "Screen"
Identifier "amdcccle-Screen[1]-0"
Device "amdcccle-Device[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "amdcccle-Screen[2]-0"
Device "amdcccle-Device[2]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
我尝试复制“/etc/X11/xorg.conf”中的 xorg.conf 文件，将驱动程序名称更改为“amdgpu”，禁用 Xinerama（因为它不以此启动），并将第二个屏幕设置为位置 1 来做一些测试，但只有 6 个屏幕被启用。
您知道如何在 Ubuntu 18.04LTS 上显示超过 8 个屏幕吗？