我的工作站（Dell Precision 5820）大部分时间运行良好，直到所有 USB 端口突然停止工作。lsusb需要一段时间才能显示连接的设备，但添加新设备或删除旧设备不会更新列表。此外，所有连接的设备实际上都不起作用：
- 移动鼠标不会移动光标
- 键盘上的所有键都不起作用
- 我的 Android 平板电脑显示“离线”
这是发生这种情况时的输出dmesg：
[203609.113150] usb 2-5: device descriptor read/8, error -110
[203609.219797] usb 2-5: new SuperSpeed Gen 1 USB device number 92 using xhci_hcd
[203609.543980] usb 2-5: new SuperSpeed Gen 1 USB device number 93 using xhci_hcd
[203614.745151] usb 2-5: device descriptor read/8, error -110
[203614.851794] usb 2-5: new SuperSpeed Gen 1 USB device number 93 using xhci_hcd
[203615.431901] usb 2-5: new SuperSpeed Gen 1 USB device number 94 using xhci_hcd
[203620.633142] usb 2-5: device descriptor read/8, error -110
[203620.739796] usb 2-5: new SuperSpeed Gen 1 USB device number 94 using xhci_hcd
[203621.067254] usb 2-5: Device not responding to setup address.
[203621.275248] usb 2-5: Device not responding to setup address.
[203621.479788] usb 2-5: device not accepting address 95, error -71
[203621.479864] usb usb2-port5: attempt power cycle
[203621.927254] usb 2-5: Device not responding to setup address.
[203622.135258] usb 2-5: Device not responding to setup address.
[203622.339787] usb 2-5: device not accepting address 96, error -71
[203622.535842] usb 2-5: new SuperSpeed Gen 1 USB device number 97 using xhci_hcd
[203627.801096] usb 2-5: device descriptor read/8, error -110
[203627.907782] usb 2-5: new SuperSpeed Gen 1 USB device number 97 using xhci_hcd
[203628.811879] usb 2-5: new SuperSpeed Gen 1 USB device number 98 using xhci_hcd
[203633.945147] usb 2-5: device descriptor read/8, error -110
[203634.051781] usb 2-5: new SuperSpeed Gen 1 USB device number 98 using xhci_hcd
[203634.375873] usb 2-5: new SuperSpeed Gen 1 USB device number 99 using xhci_hcd
[203639.577149] usb 2-5: device descriptor read/8, error -110
[203639.683769] usb 2-5: new SuperSpeed Gen 1 USB device number 99 using xhci_hcd
[203639.819980] usb usb2-port5: attempt power cycle
[203640.539942] usb 2-5: new SuperSpeed Gen 1 USB device number 100 using xhci_hcd
[203645.721160] usb 2-5: device descriptor read/8, error -110
[203645.827756] usb 2-5: new SuperSpeed Gen 1 USB device number 100 using xhci_hcd
[203646.151859] usb 2-5: new SuperSpeed Gen 1 USB device number 101 using xhci_hcd
[203651.353160] usb 2-5: device descriptor read/8, error -110
[203651.459766] usb 2-5: new SuperSpeed Gen 1 USB device number 101 using xhci_hcd
[203652.039837] usb 2-5: new SuperSpeed Gen 1 USB device number 102 using xhci_hcd
[203657.241158] usb 2-5: device descriptor read/8, error -110
[203657.347767] usb 2-5: new SuperSpeed Gen 1 USB device number 102 using xhci_hcd
[203657.671845] usb 2-5: new SuperSpeed Gen 1 USB device number 103 using xhci_hcd
[203662.873165] usb 2-5: device descriptor read/8, error -110
[203662.979758] usb 2-5: new SuperSpeed Gen 1 USB device number 103 using xhci_hcd
[203663.107825] usb usb2-port5: attempt power cycle
[203663.551885] usb 2-5: new SuperSpeed Gen 1 USB device number 104 using xhci_hcd
[203668.761166] usb 2-5: device descriptor read/8, error -110
[203668.867750] usb 2-5: new SuperSpeed Gen 1 USB device number 104 using xhci_hcd
[203669.191947] usb 2-5: new SuperSpeed Gen 1 USB device number 105 using xhci_hcd
唯一能使其恢复的方法就是重新启动。
我怀疑这确实是我的其他问题...我认为问题不在于它不会醒来，而在于它没有接收到事件。
硬件信息：
- 戴尔 Precision 5820
- 英特尔(R) 至强(R) W-2295 CPU @ 3.00GHz
- nVidia Quadro P2200（驱动程序
nvidia-driver-460.39-0ubuntu0.20.04.1：）
操作系统版本：
NAME="Ubuntu"
VERSION="20.04.2 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.2 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
核心 （uname -a）：
Linux XXXXXX 5.8.0-44-generic #50~20.04.1-Ubuntu SMP Wed Feb 10 21:07:30 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux