外接显示器未连接

外接显示器未连接

我最近在笔记本电脑上安装了 Ubuntu 18.04 和 Windows 10。不幸的是,连接到 HDMI-1 的外接显示器无法在 Ubuntu 上运行(未检测到)。我几乎尝试了所有方法这里这里. 它与HDMI 转 VGA 适配器。我的显卡是 GeForce GTX 1650,我尝试下载NVidia 的驱动程序。此外,正如您在图片中看到的,屏幕显示设置甚至不显示屏幕布局。

在 Ubuntu 14.04(我的旧笔记本电脑)上,我曾经使用类似方法解决过类似的问题:

echo $myNewMode
## Output: "1368x768_60.00" 85.25 1368 1440 1576 1784 768 771 781 798 -hsync +vsync
xrandr --addmode eDP-1 $myNewModeName
xrandr --output eDP-1 --mode $myNewModeName --output HDMI-1 --auto --right-of eDP-1

但是,这也不起作用。有什么想法吗?

在此处输入图片描述

更新:我已经运行X -configure(只有主屏幕在工作)如前所述这里之后我运行了nvidia-xconfig(只有 HDMI 有效)。不知何故,似乎 nvidia 拿走了最近创建的文件xorg.conf.new并从中创建了自己的文件xorg.conf。不过,如果我拔掉 HDMI,一切都是空白的。至少现在我可以在应用程序窗口上看到一个屏幕布局(HDMI)和内容nvidia x server settings(之前是空白的)在此处输入图片描述

这是最新的xorg.conf文件:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 440.26

Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/X11/misc"
    FontPath        "/usr/share/fonts/X11/cyrillic"
    FontPath        "/usr/share/fonts/X11/100dpi/:unscaled"
    FontPath        "/usr/share/fonts/X11/75dpi/:unscaled"
    FontPath        "/usr/share/fonts/X11/Type1"
    FontPath        "/usr/share/fonts/X11/100dpi"
    FontPath        "/usr/share/fonts/X11/75dpi"
    FontPath        "built-ins"
EndSection

Section "Module"
    Load           "glx"
EndSection

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

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Monitor Vendor"
    ModelName      "Monitor Model"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Monitor Vendor"
    ModelName      "Monitor Model"
EndSection

Section "Device"

        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "Accel"                 # [<bool>]
        #Option     "AccelMethod"           # <str>
        #Option     "Backlight"             # <str>
        #Option     "CustomEDID"            # <str>
        #Option     "DRI"                   # <str>
        #Option     "Present"               # [<bool>]
        #Option     "ColorKey"              # <i>
        #Option     "VideoKey"              # <i>
        #Option     "Tiling"                # [<bool>]
        #Option     "LinearFramebuffer"     # [<bool>]
        #Option     "HWRotation"            # [<bool>]
        #Option     "VSync"                 # [<bool>]
        #Option     "PageFlip"              # [<bool>]
        #Option     "SwapbuffersWait"       # [<bool>]
        #Option     "TripleBuffer"          # [<bool>]
        #Option     "XvPreferOverlay"       # [<bool>]
        #Option     "HotPlug"               # [<bool>]
        #Option     "ReprobeOutputs"        # [<bool>]
        #Option     "XvMC"                  # [<bool>]
        #Option     "ZaphodHeads"           # <str>
        #Option     "VirtualHeads"          # <i>
        #Option     "TearFree"              # [<bool>]
        #Option     "PerCrtcPixmaps"        # [<bool>]
        #Option     "FallbackDebug"         # [<bool>]
        #Option     "DebugFlushBatches"     # [<bool>]
        #Option     "DebugFlushCaches"      # [<bool>]
        #Option     "DebugWait"             # [<bool>]
        #Option     "BufferCache"           # [<bool>]
    Identifier     "Card0"
    Driver         "nvidia"
    BusID          "PCI:0:2:0"
EndSection

Section "Device"

        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "SWcursor"              # [<bool>]
        #Option     "HWcursor"              # [<bool>]
        #Option     "NoAccel"               # [<bool>]
        #Option     "ShadowFB"              # [<bool>]
        #Option     "VideoKey"              # <i>
        #Option     "WrappedFB"             # [<bool>]
        #Option     "GLXVBlank"             # [<bool>]
        #Option     "ZaphodHeads"           # <str>
        #Option     "PageFlip"              # [<bool>]
        #Option     "SwapLimit"             # <i>
        #Option     "AsyncUTSDFS"           # [<bool>]
        #Option     "AccelMethod"           # <str>
        #Option     "DRI"                   # <i>
    Identifier     "Card1"
    Driver         "nvidia"
    BusID          "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Viewport    0 0
        Depth       1
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       4
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       8
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       15
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       16
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Card1"
    Monitor        "Monitor1"
    DefaultDepth    24
    SubSection     "Display"
        Viewport    0 0
        Depth       1
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       4
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       8
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       15
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       16
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       24
    EndSubSection
EndSection

最新xrandr输出: 兰德

答案1

最后,我让它在双屏上工作了。我做了很多步骤,这是让你想知道“它有效,怎么回事?”的解决方案之一。我最后的步骤是:

1-我启用/选择gdm3而不是lightdm作为经理:

sudo gdm3
sudo dpkg-reconfigure gdm3

2 - 按照步骤登录恢复模式这里

3 - 彻底删除文件rm -rf /etc/X11/xorg.conf

4 – 运行,但不替换创建的X -configure文件。/root/xorg.conf.new/etc/X11/xorg.conf

5-重新启动到正常模式,我以为会出现一些问题,但突然双显示器处于活动状态并且运行正常。

目前,它无需任何xorg.conf文件即可工作。

在此处输入图片描述 在此处输入图片描述 在此处输入图片描述 在此处输入图片描述

我现在有点不敢碰它,尽管我认为我应该尝试重新创建该xorg.conf文件,也许通过 nvidia?!我希望这对有类似问题的人有用。

另外,如果我在 bios 上启用安全启动,它会回到零,双显示器无法工作,尽管 ubuntu 运行正常。也许,需要将签名驱动程序放入内核或其他东西,我不确定。

如果有人知道到底发生了什么,我会很高兴听到。

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