I'm trying to access an USB device with AQEMU. For this I have added an USB port in the media options. But when starting the virtual machine I'm getting these errors:

AQEMU Warning [..] >>>
Sender: bool System_Info::Scan_USB_Sys( QList &list )
Message: Cannot read serial from /sys/bus/usb/devices/

AQEMU Warning [..] >>>
Sender: bool System_Info::Read_SysFS_File( const QString &path, QString &data )
Message: Cannot Open File "/sys/bus/usb/devices/1-6/serial"!

The AppArmor profile for aqemu already had:

/sys/bus/ r,
/sys/bus/** r,

and after adding these:

/sys/bus/usb/devices/** r,
/sys/bus/usb/devices/ r,

and running sudo /etc/init.d/apparmor restart I'm still getting the same errors.

How to enable qemu to access the USB device and prevent these errors?

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