From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Donohue Subject: Re: [REGRESSION] Touchpad failure after e7348396c6d5 ("Input: ALPS - fix V8+ protocol handling (73 03 28)") Date: Sat, 3 Jun 2017 00:03:49 -0400 Message-ID: <20170603040349.GB16345@TopQuark.net> References: <937d0082-5c51-e0b5-dcf9-efade5ecbde5@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from Lepton.TopQuark.net ([168.235.66.66]:58990 "EHLO Mail2.TopQuark.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750707AbdFCENr (ORCPT ); Sat, 3 Jun 2017 00:13:47 -0400 Content-Disposition: inline In-Reply-To: <937d0082-5c51-e0b5-dcf9-efade5ecbde5@redhat.com> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Laura Abbott Cc: Masaki Ota , Dmitry Torokhov , Pali Rohar , Nick Fletcher , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, scott.s.lowe@gmail.com 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 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 >