On Thu, Jan 30, 2014 at 11:31 PM, Stephan Mueller <smueller@xxxxxxxxxx> wrote: > Am Donnerstag, 30. Januar 2014, 22:50:25 schrieb Benjamin Tissoires: > > Hi Benjamin, > >> > Can you please help me how to do that? I install Windows in a KVM with >> > the mouse device as a USB-passthrough device -- shall I detach the Linux >> > USB driver? >> >> No, you don't have to detach the Linux USB driver (it's done for you >> by KVM IIRC). > > Correct, libvirtd is the one that detaches the driver when I start the VM. >> >> > Now, shall I use hid-recorder on that device or rather usbmon while >> > Windows is booting? >> >> usbmon is the tool you need. hid-recorder will not work because the >> hid subsystem will be disconnected as the device is used by Windows. >> >> You can even use wireshark now. It gives you a nice interface and >> interpretation of the USB packets :) > > Please see attached for the USB sniffing on the USB bus with the Crucialtec > touch pad when Windows starts up and shuts down. To drive the device, Windows > uses the Crucialtec driver according to its device settings display. > > The attached log contains the log information for the mouse (device 001:005) > and the USB bridge (device 001:002). I cut out the listing for the touch pad > which is also attached to that bridge. > > The strange thing, however, is the following: the mouse works in Windows when > I do not sniff on the USB bus using usbmon. But as soon as I start sniffing, > it does not work any more. > > Is that log helpful? Not really :( I would have expected to see something like that: XXXXXXXXXXXXXXXX XXXXXXXXXX S Co:1:XXX:0 s 21 09 0202 0002 0004 4 = XXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXX C Co:1:XXX:0 0 4 > (SET_REPORT on the report ID 02 with a data length of 4) The capture seems to confuse the windows driver and it is not initialized correctly. Long shot: maybe if you start the capture before attaching the device to the Windows VM (or launching it) it will be in a better shape. I would say that as long as the device do not work under the VM with the capture, we are really screwed. Cheers, Benjamin -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
