Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752116AbdFNSwx (ORCPT ); Wed, 14 Jun 2017 14:52:53 -0400 Received: from mail-qt0-f177.google.com ([209.85.216.177]:36801 "EHLO mail-qt0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752072AbdFNSwu (ORCPT ); Wed, 14 Jun 2017 14:52:50 -0400 Subject: Re: [REGRESSION] Touchpad failure after e7348396c6d5 ("Input: ALPS - fix V8+ protocol handling (73 03 28)") To: Masaki Ota , Paul Donohue Cc: 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: <75b84b97-5f36-a3be-bb4e-e43cd72d9921@redhat.com> Date: Wed, 14 Jun 2017 11:52:45 -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: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3167 Lines: 77 On 06/11/2017 10:25 PM, Masaki Ota wrote: > Hi, Laura, > > Could you try to check below modification? > https://bugzilla.kernel.org/show_bug.cgi?id=195215#c10 > > This thread person said, the issue was fixed by this change. > I guess it's a XY coordinate setting problem, though the code that before the patch is applied also has a problem. > With the previous patch plus the part you suggested: "it appears as if this resolves all remaining touchpad issues. Cursor movement works as expected, both on the left-hand and right-hand sides of the touchpad, and I did not see any issues with two-finger scrolling on either side of the touchpad. Behavior with this test build appeared to be identical to 4.10.5, the last "official" kernel release to work with my touchpad." So it sounds like both parts together fix the issue. Thanks, Laura > Best Regards, > Masaki Ota > -----Original Message----- > From: Laura Abbott [mailto:labbott@redhat.com] > Sent: Wednesday, June 07, 2017 1:59 AM > To: Paul Donohue > Cc: 太田 真喜 Masaki Ota ; Dmitry Torokhov ; Pali Rohar ; Nick Fletcher ; linux-input@vger.kernel.org; linux-kernel@vger.kernel.org; scott.s.lowe@gmail.com > Subject: Re: [REGRESSION] Touchpad failure after e7348396c6d5 ("Input: ALPS - fix V8+ protocol handling (73 03 28)") > > 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 >>> >