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([2a0c:9a40:8950:f000::3a4]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-485883a9a56sm6734429f8f.15.2026.09.04.11.20.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 04 Sep 2026 11:20:39 -0700 (PDT) Message-ID: <8b4a0709-823d-44cb-a6b0-14a12392ef0c@gmail.com> Date: Fri, 4 Sep 2026 23:20:36 +0500 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] HID: logitech-hidpp: fix hi-res scroll for Bolt-connected MX Master To: Benjamin Tissoires , =?UTF-8?Q?Erik_H=C3=A5kansson?= Cc: Rafael Passos , lains@riseup.net, hadess@hadess.net, jikos@kernel.org, Shuah Khan , Brigham Campbell , Jori Koolstra , linux-input@vger.kernel.org References: <20260904034843.1340846-1-rafael@rcpassos.me> <96cd3161-3a6c-455e-a63c-f3226b27f74f@gmail.com> <119cd005-ece9-4e2a-aded-0d6d66c5bcfc@gmail.com> Content-Language: en-US From: Alexey Zagorodnikov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit >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