On Mon, 31 Jan 2011, kholis wrote: > On Mon, Jan 31, 2011 at 4:07 PM, kholis <nur.kholis.majid@xxxxxxxxx> wrote: > > On Sat, Jan 29, 2011 at 1:11 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > > >> > >> The log shows that the device was working until you unplugged it. Then > >> when you plugged it back in again, it didn't work -- it crashed when it > >> received a Get-String-Descriptor request. > >> > >> Is that what usually happens? Does the keyboard sometimes work okay > >> and sometimes not? > > I never find it works in linux so far (It always print nothing when I > pressed the button. All light indicator always off too). But always > works in windows (I've tested it in XP and 7). The log you created shows _some_ device doing something: Bus 002 Device 013 (you mentioned it yourself in the previous email). Wasn't that the Keytouch keyboard? Can you run another similar test? I want to compare the logs to see if the keyboard fails in the same way as before. This time try typing a line of text on the keyboard before you unplug it (after starting the usbmon trace). Also, it would help if you unplug your USB mass-storage device and the USB mouse before running the test, if possible. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html