Ubuntu 22.04.2无法识别第二台HDMI显示器问题求助

大家好，我刚入手一台ASUS ROG Strix笔记本，全新安装了Ubuntu 22.04系统，之前使用都很正常，但插上第二台HDMI显示器后完全没反应——系统根本检测不到这台显示器，不管我怎么设置都没用。

系统检测情况 #

我运行了xrandr命令，输出如下：

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767

DP-0 disconnected (normal left inverted right x axis y axis)

DP-1 disconnected (normal left inverted right x axis y axis)

DP-2 disconnected (normal left inverted right x axis y axis)

HDMI-0 disconnected (normal left inverted right x axis y axis)

eDP-1-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm

1920x1080    144.00*+  60.00

1680x1050    144.00

1280x1024    144.00

1440x900     144.00

1280x800     144.00

1280x720     144.00

1024x768     144.00

800x600      144.00

640x480      144.00

DisplayPort-1-0 disconnected (normal left inverted right x axis y axis)

DisplayPort-1-1 disconnected (normal left inverted right x axis y axis)

DisplayPort-1-2 disconnected (normal left inverted right x axis y axis)

DisplayPort-1-3 disconnected (normal left inverted right x axis y axis)

DisplayPort-1-4 disconnected (normal left inverted right x axis y axis)

进入系统的显示设置里，也只显示内置显示器已连接。

NVIDIA驱动状态 #

在遇到这个问题前，我已经按指引安装了NVIDIA显卡驱动，运行nvidia-smi的输出如下：

Wed Aug  9 11:10:45 2023

+---------------------------------------------------------------------------------------+

| NVIDIA-SMI 535.98                 Driver Version: 535.98       CUDA Version: 12.2     |

|-----------------------------------------+----------------------+----------------------+

| GPU  Name                 Persistence-M | Bus-Id        Disp.A | Volatile Uncorr. ECC |

| Fan  Temp   Perf          Pwr:Usage/Cap |         Memory-Usage | GPU-Util  Compute M. |

|                                         |                      |               MIG M. |

|=========================================+======================+======================|

|   0  NVIDIA GeForce RTX 3050 ...    Off | 00000000:01:00.0 Off |                  N/A |

| N/A   45C    P8               3W /  65W |    365MiB /  4096MiB |      0%      Default |

|                                         |                      |                  N/A |

+-----------------------------------------+----------------------+----------------------+

+---------------------------------------------------------------------------------------+

| Processes:                                                                            |

|  GPU   GI   CI        PID   Type   Process name                            GPU Memory |

|        ID   ID                                                             Usage      |

|=======================================================================================|

|    0   N/A  N/A      1682      G   /usr/lib/xorg/Xorg                          107MiB |

|    0   N/A  N/A      1850      G   /usr/bin/gnome-shell                        101MiB |

|    0   N/A  N/A      3373      G   ...irefox/2356/usr/lib/firefox/firefox      143MiB |

|    0   N/A  N/A      6794      G   gnome-control-center                          1MiB |

+---------------------------------------------------------------------------------------+

打开NVIDIA设置界面，点击“Detect Displays”也没有任何反应。

已尝试的其他方案 #

我还试过在这台笔记本上安装Debian系统，结果遇到了完全一样的问题——还是检测不到HDMI显示器。

我的最终需求就是能在Ubuntu系统下正常使用第二台外接显示器，希望各位大佬能给我一些解决思路，谢谢大家！

备注：内容来源于stack exchange，提问作者Kavishka Gihan