Re: [REGRESSION 7.3-rc1] HID: logitech-hidpp: hi-res scroll mode forcibly re-enabled on every reconnect for Bolt devices, overriding userspace

[Erik Håkansson]

Hi!

> Possibly related
> ================
>
> On this same Bolt topology the wheel also scrolls far too far per detent,
> apparently because hid-logitech-dj does not forward the hi-res wheel reports
> to hid-logitech-hidpp, so the multiplier-15 steps reach userspace unscaled.
> There is an out-of-tree DKMS workaround for exactly this WPID:
>
>   https://github.com/Magnetar-OS/logitech-bolt-hidpp-dkms
>
> I am reporting only the mode-reset problem here, but the two look like
> neighbouring consequences of the same commit and may be worth considering
> together.

There are two different patches that aim to solve this, but it looks like the
dkms fix is a bit more robust.
https://lore.kernel.org/linux-input/20260901-bolt-scroll-fix-v1-1-58bca7ae487f@xxxxxxxxxxxxxx/
https://lore.kernel.org/linux-input/20260904034843.1340846-1-rafael@xxxxxxxxxxx/

I think the best approach would probably be to apply Rafael's patch and see
if there's anything from the dkms patches that's worth including too.

Regards,
Erik