Re: [PATCH 0/2] HID: logitech-hidpp: fix Bolt hi-res wheel handling

[Oleksandr Natalenko]

Hello.

On čtvrtek 24. září 2026 23:41:41, středoevropský letní čas Erik Håkansson wrote:
> > Somewhat unrelated note: if I enable "Thumb Wheel Diversion", the thumb
> > wheel stops working altogether. It's probably not supported by the driver
> > at all in HID++ mode?
> > 
> 
> Correct, the driver does not implement 0x2150 (Thumbwheel) in HID++ at all. 
> However, since we're interested in diverting through HID++ for device 
> separation purposes, I'm looking into implementing 0x2150 too to enable that 
> diversion for that too.
> And while reading the protocol there, I noticed that it also supports touch 
> events on the thumbwheel. There's three different statuses, single_tap, proxy, 
> and touch. Touch is continuous touch, single_tap is tap, and proxy is whether 
> a finger is in close proximity but not quite touching. 
> Does your mouse by any chance support that? If so, can you tell if it sends a 
> button event on tap or touch when in non-diverted mode? Or possibly if it does 
> so in Windows. I don't know what I should map those events to really :) 

No idea TBH. The mouse is this one:

https://www.logitech.com/en-us/shop/p/mx-master-4

I haven't seen proximity mentioned anywhere is specs. But I can try to sniff for these events, just let me know how.

Thanks.

-- 
Oleksandr Natalenko, MSE

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