Ubuntu 22.10下USB-C扩展坞无法同时驱动两台HDMI外接显示器的问题求助

各位好，我碰到了一个头疼的外接显示器问题，想请大家帮忙看看：

我目前使用的是Ubuntu 22.10系统，搭配一台较新的联想ThinkPad，手头有两台HDMI接口的显示器。现在的情况是，如果把一台显示器直接接到电脑自带的HDMI端口，另一台通过HDMI转USB-C适配器连接电脑的USB-C口，两台显示器都能正常工作——这说明线缆和显示器本身应该没有问题。

但我现在想把两台显示器都接到同一个USB-C扩展坞上，却没法让它们同时正常工作。这已经是我尝试的第二个扩展坞了，之前那个扩展坞在另一台电脑上是可以正常驱动双屏的，所以我觉得问题大概率出在Ubuntu系统这边。

下面是我的系统相关信息，供大家参考：

基础系统信息 #

• 显示服务器：X11
• 内核版本：

Linux chocrates-workstation 5.19.0-43-generic #44-Ubuntu SMP PREEMPT_DYNAMIC Tue May 16 14:03:43 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

lsusb 输出 #

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 06cb:00f9 Synaptics, Inc.
Bus 003 Device 003: ID 04f2:b71c Chicony Electronics Co., Ltd Integrated RGB Camera
Bus 003 Device 008: ID 0bda:5418 Realtek Semiconductor Corp. BillBoard Device
Bus 003 Device 010: ID 0bda:1100 Realtek Semiconductor Corp. HID Device
Bus 003 Device 016: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 003 Device 015: ID 046d:082c Logitech, Inc. HD Webcam C615
Bus 003 Device 014: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 003 Device 013: ID 29ea:0102 Kinesis Corporation Advantage2 Keyboard
Bus 003 Device 012: ID 1532:0084 Razer USA, Ltd RZ01-0321 Gaming Mouse [DeathAdder V2]
Bus 003 Device 011: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 003 Device 009: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 003 Device 006: ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub
Bus 003 Device 004: ID 1050:0406 Yubico.com Yubikey 4/5 U2F+CCID
Bus 003 Device 002: ID 0b00:5423 INGENICO 4-Port USB 2.0 Hub
Bus 003 Device 007: ID 8087:0032 Intel Corp. AX210 Bluetooth
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 004: ID 0bda:0411 Realtek Semiconductor Corp. Hub
Bus 002 Device 003: ID 17e9:6011 DisplayLink Plugable UD-ULTC4K
Bus 002 Device 002: ID 0b00:0423 INGENICO 4-Port USB 3.0 Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

NVIDIA相关配置与状态 #

/lib/modprobe.d/nvidia-kms.conf 内容 #

# This file was generated by Nvidia-prime
# Set the value to 1 to enable mode setting
options nvidia-drm modeset=1%

nvidia-smi 输出 #

Fri Jun  9 15:47:07 2023
+---------------------------------------------------------------------------------------+
| NVIDIA-SMI 530.41.03              Driver Version: 530.41.03    CUDA Version: 12.1     |
|-----------------------------------------+----------------------+----------------------+
| 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 3080 L...    Off| 00000000:01:00.0  On |                  N/A |
| N/A   52C    P8               14W /  N/A|    749MiB / 16384MiB |      5%      Default |
|                                         |                      |                  N/A |
+-----------------------------------------+----------------------+----------------------+
+---------------------------------------------------------------------------------------+
| Processes:                                                                            |
|  GPU   GI   CI        PID   Type   Process name                            GPU Memory |
|        ID   ID                                                             Usage      |
|=======================================================================================|
|    0   N/A  N/A      2673      G   /usr/lib/xorg/Xorg                          253MiB |
|    0   N/A  N/A      2975      G   /usr/bin/gnome-shell                         72MiB |
|    0   N/A  N/A      3973      G   gnome-control-center                         14MiB |
|    0   N/A  N/A      5488      G   ...irefox/2710/usr/lib/firefox/firefox      397MiB |
|    0   N/A  N/A      7606      G   /usr/bin/nvidia-settings                      3MiB |
|    0   N/A  N/A      7683      G   .../jvm/java-11-openjdk-amd64/bin/java        3MiB |
+---------------------------------------------------------------------------------------+

另外，我使用的扩展坞是Plugable UD-ULTC4K型号。

希望有经验的朋友能给我一些排查方向或者解决方案，谢谢大家！

备注：内容来源于stack exchange，提问作者Chris