Logitech M705: Thumb button (was Re: [PATCH v4] HID: Add full supportfor Logitech Unifying receivers)

[Jiri Kosina]

[ Frantisek Fuka added to CC ]

On Wed, 14 Sep 2011, Benjamin Tissoires wrote:

> >> Nice. Does this mean I will be able to use the thumb-button of my M705
> >> mouse in the near future?
> >>
> >> (Someone asked the same question 1.5 years ago, but nothing happened 
> >> till then: http://thread.gmane.org/gmane.linux.kernel.input/11791 )
> >
> > This is quite weird. I was going to say that it will work, but with
> > the M705 I've got at home,this thumb button doesn't work at all
> > (anything is emitted from the usb, even with this driver).
> > But I'm pretty sure I made it work with the one I got at work.
> >
> > I'll give a try on Monday unless people at Logitech gave us the solution.

> I got some information for you. Apparently, it won't be possible to
> enable this thumb button right now.
> To enable it, the Windows driver put the mouse in a kind of debug mode
> that need to be handled properly, which is not the case as of today.
> 
> I was able to make it work at home because there were different series
> of M705, the latest sending the thumb button by default.

Let me resurrect this 2 years old thread, as I have received multiple 
reports since then, stating that some revisions of M705 don't have working 
thumb button.

Question mostly to the Logitech guys: Nestor, Olivier, could you please 
provide us with the sequence that needs to be sent to (certain revisisons 
of) M705 to let enter the debug mode, making the thumb button actually 
emit a USB message?

Thanks,

-- 
Jiri Kosina
SUSE Labs
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