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Ubuntu 20.04 更新后启动挂起

tag-icon • tag-icon boot 20.04 startup
Ubuntu 20.04 更新后启动挂起

在 Ubuntu 20.04 中运行更新后，我的启动性能严重下降。运行dmesg突出显示了一些有问题的进程。

...
[   21.921354] usb 1-4: device descriptor read/64, error -110
[   22.157236] usb 1-4: new high-speed USB device number 3 using xhci_hcd
[   27.297351] usb 1-4: device descriptor read/64, error -110
[   42.913317] usb 1-4: device descriptor read/64, error -110
[   43.021293] usb usb1-port4: attempt power cycle
[   43.673232] usb 1-4: new high-speed USB device number 4 using xhci_hcd
[   48.929356] usb 1-4: device descriptor read/8, error -110
[   54.305334] usb 1-4: device descriptor read/8, error -110
[   54.541242] usb 1-4: new high-speed USB device number 5 using xhci_hcd
[   59.681384] usb 1-4: device descriptor read/8, error -110
[   65.057363] usb 1-4: device descriptor read/8, error -110
[   65.165292] usb usb1-port4: unable to enumerate USB device
...
[   66.871831] NET: Registered protocol family 38
[  128.664088] usb 1-14: new high-speed USB device number 9 using xhci_hcd
...

运行后systemd-analyze，您会看到启动时间……完全是垃圾。

Startup finished in 29.969s (firmware) + 10.657s (loader) + 1.854s (kernel) + 1min 4.220s (userspace) = 1min 46.701s 
graphical.target reached after 30.301s in userspace

有人知道如何解决这个问题吗？

答案1

事实证明，我连接的 GoPro 从 USB 吸取了过多的电量，导致启动失败。已解决。

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