难以关闭桌面 Ubuntu 20.04

难以关闭桌面 Ubuntu 20.04

我刚刚升级到 Ubuntu 20.04,一切进展顺利。重启 - 没问题,但如果我选择关闭电源,它要么挂起并显示徽标,要么陷入循环并显示错误消息:我拍了一张屏幕照片,开始:

usb 1-9 hub failed to enable device error -108

usb 1-9 device not accepting address 5 error -108
 
usb usb1-port9: couldn't allocate usb device

sr 2:0:0:0 tag#21 timing out command 120s

INFO task systemd-shutdown:1 blocked for more than 120seconds

   Not tainted 5.4.0-54-generic #60-ubuntu

休息一段时间后,还有更多。从

呼叫跟踪:

然后加载更多的东西:包括代码:Bad RIP value 请提出建议?

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