When adding the usb wifi TP Link WN722N (Atheros AR9271) to the vitualbox guest the following error is raised:
ath9k_htc 1-2:1.0: >ath9k_htc: Target is unresponsive
ath9k_htc: Failed to initialize the device
usb 1-2: >ath9k_htc: USB layer deinitialized
To solve this issue follow this steps:
- apt-get update
- apt-get upgrade
- apt-get dist-upgrade
- apt-get install linux-headers-$(uname -r)
- Shutdown Linux guest OS
- Download VirtualBox Extension Pack (https://www.virtualbox.org/wiki/Downloads)
- Apply extension at: File -> Preferences -> Extensions
- Configure the Linux guest OS and enable USB 2.0 Controller
- Connect and enable device
If this is still not working try to unplug the usb device or delete or the usb devices and readd them on virtualbox.