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. Best Regards, Masaki Ota -----Original Message----- From: Laura Abbott [mailto:labb...@redhat.com] Sent: Wednesday, June 07, 2017 1:59 AM To: Paul Donohue <linux-ker...@paulsd.com> Cc: 太田 真喜 Masaki Ota <masaki....@jp.alps.com>; Dmitry Torokhov <dmitry.torok...@gmail.com>; Pali Rohar <pali.ro...@gmail.com>; Nick Fletcher <nick.m.fletc...@gmail.com>; linux-in...@vger.kernel.org; linux-kernel@vger.kernel.org; scott.s.l...@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 <masaki....@jp.alps.com> >> 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 <masaki....@jp.alps.com> >> Acked-by: Pali Rohar <pali.ro...@gmail.com> >> Tested-by: Paul Donohue <linux-ker...@paulsd.com> >> Tested-by: Nick Fletcher <nick.m.fletc...@gmail.com> >> Cc: sta...@vger.kernel.org >> Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com> >> >> I suspect this particular model needs special handling as well? >> >> Thanks, >> Laura >>
