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两个外接 DELL 显示器和 DELL 笔记本电脑

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两个外接 DELL 显示器和 DELL 笔记本电脑

我有 DELL 笔记本电脑和两台外置 DELL 显示器。我想将它们插入并拥有两个屏幕（笔记本电脑将关闭）。我确实尝试将它们插入底座：

  • 两根 DiplayPort 线缆
  • 一个 DisplayPort 和一个 HDMI

这不管用。总是只有一个外接显示器处于打开状态。我可以打开一个外接显示器和笔记本电脑显示屏，但无法同时使用两个外接显示器。当我登录时，每 3 个显示器都是紫色的，因此笔记本电脑可以以某种方式看到所有显示器。

[编辑] 我刚发现，当两个显示器的分辨率都是 2048x1080 时，它可以正常工作。当两个显示器的分辨率都是 2560x1440 时，它不起作用。所以问题是，我可以在更高的分辨率下使用它们吗？

neofetch：

OS: Ubuntu 20.04.4 LTS x86_64 
Host: Latitude 5510 
Kernel: 5.13.0-37-generic 
Shell: bash 5.0.17 
Resolution: 2560x1440 
DE: GNOME 
Terminal: gnome-terminal 
CPU: Intel i7-10810U (12) @ 4.900GHz 
GPU: AMD ATI Radeon 540X/550X/630 / RX 640 / E9171 MCM 
GPU: Intel Device 9bca 
Memory: 4552MiB / 15603MiB

Xrandr：

Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384
eDP-1 connected (normal left inverted right x axis y axis)
   1920x1080     60.00 +  59.97    59.96    59.93    48.00  
   1680x1050     59.95    59.88  
   1600x1024     60.17  
   1400x1050     59.98  
   1600x900      59.99    59.94    59.95    59.82  
   1280x1024     60.02  
   1440x900      59.89  
   1400x900      59.96    59.88  
   1280x960      60.00  
   1440x810      60.00    59.97  
   1368x768      59.88    59.85  
   1360x768      59.80    59.96  
   1280x800      59.99    59.97    59.81    59.91  
   1152x864      60.00  
   1280x720      60.00    59.99    59.86    59.74  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   1024x576      59.95    59.96    59.90    59.82  
   960x600       59.93    60.00  
   960x540       59.96    59.99    59.63    59.82  
   800x600       60.00    60.32    56.25  
   840x525       60.01    59.88  
   864x486       59.92    59.57  
   800x512       60.17  
   700x525       59.98  
   800x450       59.95    59.82  
   640x512       60.02  
   720x450       59.89  
   700x450       59.96    59.88  
   640x480       60.00    59.94  
   720x405       59.51    58.99  
   684x384       59.88    59.85  
   680x384       59.80    59.96  
   640x400       59.88    59.98  
   576x432       60.06  
   640x360       59.86    59.83    59.84    59.32  
   512x384       60.00  
   512x288       60.00    59.92  
   480x270       59.63    59.82  
   400x300       60.32    56.34  
   432x243       59.92    59.57  
   320x240       60.05  
   360x202       59.51    59.13  
   320x180       59.84    59.32  
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
DP-1-1 connected (normal left inverted right x axis y axis)
   2560x1440     59.95 +
   1920x1200     59.88  
   2048x1080     60.00  
   1920x1080     60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1280x800      59.81  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DP-1-2 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
   2560x1440     59.95*+
   1920x1200     59.88  
   2048x1080     60.00  
   1920x1080     60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1280x800      59.81  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DP-1-3 disconnected (normal left inverted right x axis y axis)

监视器.xml

答案1

似乎 2 个显示器的最大分辨率为 2048x1080。在未与扩展坞制造商确认其他问题的情况下，这就是答案。使用该分辨率。或者使用具有更高分辨率的单个显示器。您需要决定哪种分辨率最适合您。

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