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esr@grelber$ cat /proc/bus/usb/drivers
and you should get:
usbdevfs
hub
96-111: hiddev
hid
On Linux-2.6.x, make sure the sysfs filesystem is mounted on /sys and do:
adk0212@mail$ ls -l /sys/bus/usb/drivers/
where you should get
total 0
drwxr-xr-x 2 root root 0 May 1 18:55 hid
drwxr-xr-x 2 root root 0 May 1 18:55 hiddev
drwxr-xr-x 2 root root 0 May 1 18:55 hub
drwxr-xr-x 2 root root 0 May 1 18:55 usb
drwxr-xr-x 2 root root 0 May 1 18:55 usbfs
or perhaps something like
total 0
drwxr-xr-x 2 root root 0 Jan 6 15:27 hiddev
drwxr-xr-x 2 root root 0 Jan 6 15:28 hub
drwxr-xr-x 2 root root 0 Jan 6 15:28 usb
drwxr-xr-x 2 root root 0 Jan 6 15:27 usbfs
drwxr-xr-x 2 root root 0 Jan 6 15:28 usbhid
If your 2.6.x system does not have the /sys/bus/usb directory, either you do
not have sysfs mounted on /sys or the USB module(s) have not been loaded.
(Check /proc/mounts to make sure sysfs is mounted.)
A USB UPS needs all of these drivers – the USB device filesystem, the USB
hub, the Human Interface Device subsystem driver, and the Human Inter-
face Device driver. If you are compiling your own kernel, you want to enable
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