From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A6D4B10F0; Fri, 19 Jun 2026 00:08:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781827729; cv=none; b=mBAg+Sf40WWZNga9snHIiyn3bTXmTeZWgPtGLiYxd3Y1yuBPYn9xu8mHHCJVx4idTf72dZtClgTmp8IMzpIRF+u2QYr9ET7gCTDiMZT9uZlAJ/GoYPGa967fBH/OZNpHXp88ZpEohyxOjj0YipZU0BREbyq/q03zA2eyi6J3MZ0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781827729; c=relaxed/simple; bh=dI998SF+I4QRfqKw1iSDEAXPwaFAd5s2gQe8ONaQk/E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Y8yhwnOYD/7mBFQ1y5MgCfd6JDZM0CY5F7CKMn+NsbaLJu9wgNzVcFU8azGCVHqDDQe/JtUGbmk4SHULw6zkH3TCpkEUei9WloPKF9UlODBv1ThPN7ax0hFAaApvhQfaYSobb/Qht5FKSJ1m80tdPs6Xt1cekRCclMYK3l6vlIA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nyoqhv5L; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nyoqhv5L" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A4F21F000E9; Fri, 19 Jun 2026 00:08:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781827728; bh=FBTOWtRpm5mdCXnJQ+yGzLNYeUt9QGflnFgYSAchR8A=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=nyoqhv5LYRLDh+iokdpfKHoMWlkjpRlbCzj446bWFOQI+TnCbUOWyXiw3EPHllxpB P2SiZDen+eYb+9EbumEDhY4ISpwKirh2gUF4o+nk2jmVEDnzdcvjj+es7RId7hQ5gf /g6xGkArF5ESYrJoR3/Dbrr08wBditxnkYgHWffZeiaeEMehy9F5IG47XZHdepZ+Zt GEKJqk5grntsg9Ed7q0dCZT/u4VJZR8T142f7sDUoI7R73W7WYY3+hjmzfAuzUYwJv iMtBcA7eFmshns52QyV0fqmWl7wcduHl4YcqT0W4gdrSn9DA4MX13C4bHKKS4VjVbG dMoOcShGMj6Tg== Date: Fri, 19 Jun 2026 02:08:43 +0200 From: Andi Shyti To: Abhijeeth Babu Cc: Mika Westerberg , linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] i2c: acpi: Force ELAN1300 touchpads to 100 kHz Message-ID: References: <20260617192611.125513-1-babu.jeeth@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260617192611.125513-1-babu.jeeth@gmail.com> Hi Abhijeeth, On Thu, Jun 18, 2026 at 12:56:11AM +0530, Abhijeeth Babu wrote: > The ELAN1300 touchpad with HID ID 04F3:3104 on the ASUS VivoBook > X513UA_KM513UA exhibits severe pointer jumps and erratic movement when > the I2C bus operates at 400 kHz. > > The system DSDT describes the touchpad using an I2cSerialBusV2 resource > with a speed of 0x00061A80, corresponding to 400 kHz, on the > AMDI0010:03 controller. > > At this speed, libinput repeatedly reports: > > kernel bug: Touch jump detected and discarded > > Add ELAN1300 to i2c_acpi_force_100khz_device_ids so that it operates at > 100 kHz. > > Before the change, nine touch-jump events were recorded, with additional > messages suppressed by libinput's rate limiter. With the bus forced to > 100 kHz, no touch-jump events have been observed and the touchpad operates > normally. > > The affected system uses BIOS X513UA.319 dated 2023-05-09. > > Signed-off-by: Abhijeeth Babu merged to i2c/i2c-for-7.3. Thanks, Andi