On Wed, Mar 31, 2010 at 2:05 PM, Jiri Kosina [off-list ref] wrote:

On Tue, 30 Mar 2010, Octoploid wrote:

quoted

quoted

Could you please provide output of

       cat /sys/kernel/debug/hid/<device>/rdesc

and

       cat /sys/kernel/debug/hid/<device>/events

Sure:

There are no events logged when I press the thumb button
while running cat /sys/kernel/debug/hid/0003:046D:C52B.0002/events.

(The »unifying USB reciever« has three sub-devices. The first one is
for keyboards, the second for mouses and the third is not used:
usb 3-1: new full speed USB device using ohci_hcd and address 2
input: Logitech USB Receiver as
/devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input2
generic-usb 0003:046D:C52B.0001: input,hidraw0: USB HID v1.11 Keyboard
[Logitech USB Receiver] on usb-0000:00:12.0-1/input0
input: Logitech USB Receiver as
/devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.1/input/input3
generic-usb 0003:046D:C52B.0002: input,hiddev96,hidraw1: USB HID v1.11
Mouse [Logitech USB Receiver] on usb-0000:00:12.0-1/input1
generic-usb 0003:046D:C52B.0003: hiddev97,hidraw2: USB HID v1.11
Device [Logitech USB Receiver] on usb-0000:00:12.0-1/input2)

The rdesc output for the mouse and the third device follows:

Thanks for providing the output.

The device defines 16 buttons in its report descriptor. How much does it
actually physically have?

8 if I count correctly (left,middle,right,scrollwheel left,scrollwheel right,
forward, backward and the hidden (the non working) thumb button).
Here is a photo of the mouse (the hidden button is located under the
white underscore below the back and forward buttons):
http://www.techfresh.net/wp-content/uploads/2010/03/logitech_m705.jpg

Is the other (non-used) interface also silent when you press the
non-working button? (I can see that it is claimed by HID as well).

Yes.

Could you please apply the patch below and check whether there is still no
event present when you press the button?

Yes, unfortunately there are still no events even with the patch applied.
(I've tested both interfaces)
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