我在联想 ThinkBook 13s G2，我无法连接到我的LG Ultrafine 4K监视器。
该显示器最初设计用于 MacBook，但在搜索此问题时，我发现很多人成功地让它与 Ubuntu 兼容在联想，尽管还有一些其他小问题（请参阅相关问题）。显示器相当不寻常，因为它只有雷电 USB-C 输入，没有按钮可以物理打开它，因为它在连接时会自动打开。
通过支持雷电的电缆连接显示器时，什么都没有显示，但笔记本电脑屏幕开始在开启和关闭之间循环，而外接显示器上没有任何反应。
我已经检查了 Ubuntu 设置，雷电功能已被正确检测并启用，它也在 BIOS 设置中启用了。
我能做些什么来解决这个问题，甚至诊断出问题是什么？目前，没有检测到任何东西，我甚至无法运行lspci以获得更多见解。
任何帮助都值得感激，谢谢！！:)
编辑：
- 我尝试了不同的显示管理器（lightdm），但行为仍然相同
- 我终于能够检测到一些东西：通过在
sudo dmesg -w连接显示器时运行，我可以看到它无法循环连接到显示器，下面是日志的摘录。
[ 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]
...