Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751533AbdFFQ7R (ORCPT ); Tue, 6 Jun 2017 12:59:17 -0400 Received: from mail-qt0-f170.google.com ([209.85.216.170]:34532 "EHLO mail-qt0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751404AbdFFQ7P (ORCPT ); Tue, 6 Jun 2017 12:59:15 -0400 Subject: Re: [REGRESSION] Touchpad failure after e7348396c6d5 ("Input: ALPS - fix V8+ protocol handling (73 03 28)") To: Paul Donohue Cc: Masaki Ota , Dmitry Torokhov , Pali Rohar , Nick Fletcher , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, scott.s.lowe@gmail.com References: <937d0082-5c51-e0b5-dcf9-efade5ecbde5@redhat.com> <20170603040349.GB16345@TopQuark.net> From: Laura Abbott Message-ID: Date: Tue, 6 Jun 2017 09:59:11 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0 MIME-Version: 1.0 In-Reply-To: <20170603040349.GB16345@TopQuark.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1684 Lines: 42 On 06/02/2017 09:03 PM, Paul Donohue wrote: > This might be related to https://bugzilla.kernel.org/show_bug.cgi?id=195215 > > Could you have the user try this change? https://bugzilla.kernel.org/show_bug.cgi?id=195215#c12 > https://bugzilla.redhat.com/show_bug.cgi?id=1447327#c13 "Cursor movement seems to work, but there are intermittent two-finger scrolling issues on the right-hand side of the touchpad. There are no issues with cursor movement or two-finger scrolling on the left-hand side of the touchpad." > On Fri, Jun 02, 2017 at 10:54:52AM -0700, Laura Abbott wrote: >> Hi, >> >> Fedora got a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1447327 >> of a touchpad failure on a Dell Latitude E7370. Testing showed that the >> bad commit was >> >> commit e7348396c6d51b57c95c6646c390cd078e038e19 >> Author: Masaki Ota >> Date: Fri Mar 17 14:10:57 2017 -0700 >> >> Input: ALPS - fix V8+ protocol handling (73 03 28) >> >> Devices identified as E7="73 03 28" use slightly modified version of V8 >> protocol, with lower count per electrode, different offsets, and different >> feature bits in OTP data. >> >> Fixes: aeaa881f9b17 ("Input: ALPS - set DualPoint flag for 74 03 28 devices") >> Signed-off-by: Masaki Ota >> Acked-by: Pali Rohar >> Tested-by: Paul Donohue >> Tested-by: Nick Fletcher >> Cc: stable@vger.kernel.org >> Signed-off-by: Dmitry Torokhov >> >> I suspect this particular model needs special handling as well? >> >> Thanks, >> Laura >>