I entered "lsusb" at the command line (as root) and nothing is return,
not even any error message.
Doing a strace the last few lines are:
open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1
ENOENT (No such file or directory)
open("/proc/bus/usb", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1
ENOENT (No such file or directory)
What happened?
This is Ubuntu 10.04 (it used NOT to be like that, not sure I what did
wrong last time). But running a VirtualBox INSIDE this same OS, I
was able to get result from "lsusb" (after enabling the USB devices in
VirtualBox interface) and strace gives result:
open("/dev/bus/usb/001/002", O_RDWR) = 3
ioctl(3, USBDEVFS_IOCTL, 0xbff6f75c) = -1 ENOTTY (Inappropriate
ioctl for device)
close(3) = 0
open("/dev/bus/usb/001/001", O_RDWR) = 3
Why the difference?
--
Regards,
Peter Teoh
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