what are the implication (or symptoms) of that statement? how do i know that?
>ps -ef |grep usb
root 232 2 0 07:44 ? 00:00:18 [usb-storage]
root 266 2 0 07:44 ? 00:00:14 [usb-storage]
root 6757 2 0 13:05 ? 00:00:00 [usb-storage]
root 6831 5920 0 13:05 pts/0 00:00:00 grep --color=auto usb
>lsmod |grep usb
usbhid 39214 0
hid 89444 1 usbhid
usb_storage 49986 4
right now, i have no problem in accessing any USB devices. when i
mirror the internal partition into an external USB storage disk, the
external USB storage partition successfully the exact identical OS -
with exactly the same sympton: "lsusb" returning nothing.
it used to be working, and there is completely no change in the kernel
or module, as far as i am aware. and "working" means "lsusb" used to
return everything.
On Sat, Sep 29, 2012 at 10:21 AM, Mark Bishop <mark@xxxxxxxx> wrote:
> You don't have the USB module loaded or it isn't compiled into your kernel.
>
> Peter Teoh <htmldeveloper@xxxxxxxxx> wrote:
>>
>> 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
>>
>> ________________________________
>>
>> Kernelnewbies mailing list
>> Kernelnewbies@xxxxxxxxxxxxxxxxx
>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>>
>
> --
> Sent from my Android phone with K-9 Mail. Please excuse my brevity.
--
Regards,
Peter Teoh
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
