Comment 6 for bug 570049

Hi James,
  Your strace is interesting, the very bottom of it is :

open("/dev/bus/usb/002/002", O_RDWR) = -1 EACCES (Permission denied)
open("/dev/bus/usb/002/002", O_RDONLY) = -1 ENODEV (No such device)
open("/dev/bus/usb/002/001", O_RDWR) = -1 EACCES (Permission denied)
open("/dev/bus/usb/002/001", O_RDONLY) = 4
ioctl(4, USBDEVFS_CONNECTINFO, 0x7ffff00b5610) = -1 EPERM (Operation not permitted)
read(4,

So, it doesn't like something about /dev/bus/usb/002/001 - but we don't know what that is.

So, can you repeat the strace, then look at the bottom few lines for the last name past to open( - if it's /dev/bus/usb/002/001 again
can you then include the output from:

udevadm info --query=all --name=/dev/bus/usb/002/001

which should hopefully tell us what it is and which driver it is using.

Dave