DisplayLink 顯示器與英特爾一起

Question

我有一個 USB DisplayLink 設備，可以使用自訂 Xorg 設定檔。由於安裝了 saucy X 伺服器和內核，我正在使用 saucy 的 X 伺服器運行 Ubuntu 12.04 amd64：

sudo apt-get install --install-recommends xserver-xorg-lts-raring

我正在運行以下內核和 X 版本：

X.Org X Server 1.14.5
Release Date: 2013-12-12
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.42-37-generic x86_64 Ubuntu
Current Operating System: Linux chromeriver-laptop-tkocheran 3.11.0-20-generic #35~precise1-Ubuntu SMP Fri May 2 21:32:55 UTC 2014 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-3.11.0-20-generic root=/dev/mapper/vgcryptotop-lvcryptotoproot ro cryptopts=target=cryptotop,source=/dev/disk/by-uuid/c7278631-aca2-47dd-a48f-44c1a5380e5f,lvm=vgcryptotop acpi_backlight=vendor dell_laptop.backlight=0 quiet splash
Build Date: 06 January 2014  01:37:48PM
xorg-server 2:1.14.5-1ubuntu2~saucy1~precise2 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.30.2
    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.

核心：

3.11.0-20-generic

我目前遇到的問題是無法同時使用外部 DisplayPort 和外部 USB DisplayLink 顯示器。我可以用任何一個USB DisplayLink 顯示器或者DisplayPort 顯示，但不能同時顯示。

這是我的 /etc/X11/xorg.conf 檔案：

Section "ServerLayout"
        Identifier      "Server Layout"
        Screen  0       "DisplayLinkScreen" 0 0
        Screen  1       "DefaultScreen" LeftOf "DisplayLinkScreen"
        #Option          "Xinerama" "On"
EndSection

Section "Device"
        Identifier      "Configured Video Device"
        Driver          "intel"
EndSection

Section "Monitor"
        Identifier      "Configured Monitor"
EndSection

Section "Screen"
        Identifier      "DefaultScreen"
        Monitor         "Configured Monitor"
        Device          "Configured Video Device"
        #DefaultDepth    16
        SubSection "Display"
                Depth   16
                Modes   "1920x1080"
        EndSubSection
EndSection

Section "Device"
        Identifier "DisplayLinkDevice"
        driver  "fbdev"
        Option  "fbdev" "/dev/fb1"
EndSection

Section "Monitor"
        Identifier      "DisplayLinkMonitor"
EndSection

Section "Screen"
        Identifier      "DisplayLinkScreen"
        Device          "DisplayLinkDevice"
        Monitor         "DisplayLinkMonitor"
        #DefaultDepth    16
        SubSection "Display"
            Depth   16
            Modes   "1920x1080"
        EndSubSection
EndSection

這個想法很簡單，就是擁有一台雙顯示器機器。關於為什麼無法啟動兩個顯示器的任何想法？目前，透過上述設置，它僅運行 DisplayLink USB 顯示器，Intel 顯示器僅顯示控制台輸出。