I'm using VirtualBox 6.1.22r145957 with Extension Pack on MacBook pro running MacOS Catalina 10.15.7. Guest OS is fresh installed Ubuntu 20.04.2 with Guest additions. After guest reboot lsusb gives me two devices:
Code: Select all
$ lsusb
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
$ lsusb -t
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/12p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
After I lock my MacBook for 30 seconds lsusb shows me that I've lost my Tablet entry:
Code: Select all
$ lsusb
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
$ lsusb -t
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/12p, 12M
Code: Select all
01:04:45.106751 OHCI: Software reset
01:04:45.107248 OHCI: USB Operational
Code: Select all
[ 339.623821] ohci-pci 0000:00:06.0: frame counter not updating; disabled
[ 339.623837] ohci-pci 0000:00:06.0: HC died; cleaning up
[ 339.624285] usb 1-1: USB disconnect, device number 2
Any help greatly appreciated!