今天我的联想电脑突然出现这种情况Thinkpad X1 Extreme Gen 2. 与未发生此问题时相比，系统配置没有发生变化。
我正在使用 NVIDIA 的专有驱动程序 440.82+really.440.64-0ubuntu6 来驱动通过 USBC-DP 电缆插入的 Philips 276E8V 以及连接了 USB 设备和耳机的 Dell WD15 底座。
如果显示器从未插入电源，则不会出现此问题，但如果在按下“重新启动”之前拔下显示器电源，则会出现此问题。
发行版和内核：Kubuntu 20.04 LTS，内核 5.4.0-31-generic
规格：i7-9850H、GTX1650 Max-Q、16GB DDR4-2666、HP EX920 NVMe SSD
May 26 16:06:09 jordan-ThinkPad kernel: INFO: task kworker/11:1:209 blocked for more than 120 seconds.
May 26 16:06:09 jordan-ThinkPad kernel: Tainted: P O 5.4.0-31-generic #35-Ubuntu
May 26 16:06:09 jordan-ThinkPad kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 26 16:06:09 jordan-ThinkPad kernel: kworker/11:1 D 0 209 2 0x80004000
May 26 16:06:09 jordan-ThinkPad kernel: Workqueue: events dp_altmode_work [typec_displayport]
May 26 16:06:09 jordan-ThinkPad kernel: Call Trace:
May 26 16:06:09 jordan-ThinkPad kernel: __schedule+0x2e3/0x740
May 26 16:06:09 jordan-ThinkPad kernel: schedule+0x42/0xb0
May 26 16:06:09 jordan-ThinkPad kernel: schedule_preempt_disabled+0xe/0x10
May 26 16:06:09 jordan-ThinkPad kernel: __mutex_lock.isra.0+0x182/0x4f0
May 26 16:06:09 jordan-ThinkPad kernel: ? __switch_to_asm+0x34/0x70
May 26 16:06:09 jordan-ThinkPad kernel: ? __switch_to_asm+0x34/0x70
May 26 16:06:09 jordan-ThinkPad kernel: ? __switch_to_asm+0x40/0x70
May 26 16:06:09 jordan-ThinkPad kernel: ? __switch_to_asm+0x40/0x70
May 26 16:06:09 jordan-ThinkPad kernel: __mutex_lock_slowpath+0x13/0x20
May 26 16:06:09 jordan-ThinkPad kernel: mutex_lock+0x2e/0x40
May 26 16:06:09 jordan-ThinkPad kernel: ucsi_send_command+0x2a/0x60 [typec_ucsi]
May 26 16:06:09 jordan-ThinkPad kernel: ucsi_displayport_enter+0x90/0x180 [typec_ucsi]
May 26 16:06:09 jordan-ThinkPad kernel: typec_altmode_enter+0x4f/0x60 [typec]
May 26 16:06:09 jordan-ThinkPad kernel: dp_altmode_work+0xde/0xf0 [typec_displayport]
May 26 16:06:09 jordan-ThinkPad kernel: process_one_work+0x1eb/0x3b0
May 26 16:06:09 jordan-ThinkPad kernel: worker_thread+0x4d/0x400
May 26 16:06:09 jordan-ThinkPad kernel: kthread+0x104/0x140
May 26 16:06:09 jordan-ThinkPad kernel: ? process_one_work+0x3b0/0x3b0
May 26 16:06:09 jordan-ThinkPad kernel: ? kthread_park+0x90/0x90
May 26 16:06:09 jordan-ThinkPad kernel: ret_from_fork+0x1f/0x40