联想ThinkBook 13s G2（Ubuntu 22.04.2 LTS）无法识别LG UltraFine 4K显示器的问题求助

我现在用的是联想ThinkBook 13s G2，系统是Ubuntu 22.04.2 LTS，最近在连接LG UltraFine 4K显示器时遇到了麻烦。

这款显示器原本是为MacBook设计的，但我查了一下，很多人都成功在联想笔记本的Ubuntu系统上用上了它，只是有些小问题。这个显示器比较特殊，只有雷电USB-C接口，而且没有物理开机按钮，连接后会自动启动。

当我用支持雷电的线缆连接显示器时，显示器完全没反应，但我的笔记本屏幕会不停循环开关，实在搞不懂哪里出问题了。

我已经检查过Ubuntu设置，雷电功能是正常检测并启用的，BIOS里也开了雷电选项，但还是没用。

现在显示器根本没被识别出来，我连lspci都没法用来排查细节，有没有大佬能告诉我该怎么解决或者诊断这个问题？万分感谢！🙂

补充更新： #

• 我试过换用另一个显示管理器lightdm，但问题还是一样。
• 终于抓到点线索了！我在连接显示器时运行sudo dmesg -w，发现系统一直在循环尝试连接显示器但失败了，下面是日志片段：

[ 2249.592119] usb 3-3: New USB device found, idVendor=043e, idProduct=9a61, bcdDevice=52.49
[ 2249.592129] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2249.592133] usb 3-3: Product: USB2.1 Hub
[ 2249.592136] usb 3-3: Manufacturer: LG Electronics Inc.
[ 2249.595526] hub 3-3:1.0: USB hub found
[ 2249.598476] hub 3-3:1.0: 4 ports detected
[ 2249.909377] usb 3-3.4: new high-speed USB device number 82 using xhci_hcd
[ 2249.968589] usb 3-3: USB disconnect, device number 81
[ 2250.013417] usb 3-3.4: Device not responding to setup address.
[ 2250.221353] usb 3-3.4: Device not responding to setup address.
[ 2250.429375] usb 3-3.4: device not accepting address 82, error -71
[ 2250.429589] usb 3-3-port4: attempt power cycle
[ 2251.089276] usb 3-3: new high-speed USB device number 86 using xhci_hcd
[ 2251.217345] usb 3-3: device descriptor read/64, error -71
[ 2251.476312] usb 3-3: New USB device found, idVendor=043e, idProduct=9a61, bcdDevice=52.49
[ 2251.476322] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2251.476326] usb 3-3: Product: USB2.1 Hub
[ 2251.476329] usb 3-3: Manufacturer: LG Electronics Inc.
[ 2251.481378] hub 3-3:1.0: USB hub found
[ 2251.481751] hub 3-3:1.0: 4 ports detected
[ 2251.793406] usb 3-3.4: new high-speed USB device number 87 using xhci_hcd
[ 2251.816316] usb 3-3-port4: cannot reset (err = -71)
[ 2251.816364] usb 3-3: USB disconnect, device number 86
[ 2251.816509] usb 3-3-port4: cannot reset (err = -71)
[ 2251.816707] usb 3-3-port4: attempt power cycle
[ 2252.793403] usb 3-3: new high-speed USB device number 91 using xhci_hcd
[ 2252.921434] usb 3-3: device descriptor read/64, error -71
...
[ 2189.262909] usb 3-3: New USB device found, idVendor=043e, idProduct=9a61, bcdDevice=52.49
[ 2189.262921] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2189.262925] usb 3-3: Product: USB2.1 Hub
[ 2189.262928] usb 3-3: Manufacturer: LG Electronics Inc.
[ 2189.265375] hub 3-3:1.0: USB hub found
[ 2189.268010] hub 3-3:1.0: 4 ports detected
[ 2189.550110] usb 3-3: USB disconnect, device number 43
[ 2189.580306] usb 3-3.4: new high-speed USB device number 44 using xhci_hcd
[ 2189.580961] usb 3-3-port4: attempt power cycle
[ 2190.560356] usb 3-3: new high-speed USB device number 48 using xhci_hcd
[ 2190.597036] ------------[ cut here ]------------
[ 2190.597045] thunderbolt 0000:00:0d.3: interrupt for RX ring 0 is already disabled
[ 2190.597123] WARNING: CPU: 0 PID: 18366 at drivers/thunderbolt/nhi.c:137 ring_interrupt_active+0x269/0x310 [thunderbolt]
...

备注：内容来源于stack exchange，提问作者kudega