Re: [PATCH] HID: logitech-hidpp: fix hi-res scroll for Bolt-connected MX Master

[Alexey Zagorodnikov <xglooom@gmail.com>]

 >we just revert the inclusion of the receiver in the dj driver.

Please no, we finally able to achieve hi-res scrolling, like it was on 
unifying and bluetooth connections.

Maybe place it behind some quirk flags if causes more trouble on other 
setup.

On 9/4/26 22:03, Benjamin Tissoires wrote:
> On Sep 04 2026, Erik Håkansson wrote:
>> Hi!
>> Is this the same issue as in
>> https://lore.kernel.org/linux-input/20260901-bolt-scroll-fix-v1-1-58bca7ae487f@protonmail.com/
>> The symptoms seem similar at least, and if so the approach to fixing
>> it in that case is to simply treat Bolt devices like previous DJ
>> devices, rather than having special treatment for Bolt.
>> Can you who have Bolt mice maybe test that patch too to see if it
>> solves the same issue?
> FWIW, my initial decision a few years back when Bolt was introduced was
> to not include it in the kernel, because there are too many things it's
> missing, the most problematic one being that we don't know which device
> sends which event.
>
> So basically, there is a chance that the driver sets high-resolution
> scrolling on a bolt device, when 2 mice are connected, and one is
> capable of it and the other is not. This is unlikely to happen, but is
> hard to solve in the kernel.
>
> So I'm happy to wait for testing and patches, but I would also like a
> conclusion where bolt doesn't belong to the kernel, and we just revert
> the inclusion of the receiver in the dj driver.
>
> Cheers,
> Benjamin