On Sat, Sep 29, 2012 at 1:12 PM, Mark Bishop <mark@xxxxxxxx> wrote: > What does 'find /dev/ | grep dev' show > http://pastebin.com/tuh7fv3v any idea? > > Peter Teoh <htmldeveloper@xxxxxxxxx> wrote: >> >> 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. >> >> >> > > -- > 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
