From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752097AbbCWIVG (ORCPT ); Mon, 23 Mar 2015 04:21:06 -0400 Received: from mail-yh0-f53.google.com ([209.85.213.53]:35369 "EHLO mail-yh0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751935AbbCWIVD (ORCPT ); Mon, 23 Mar 2015 04:21:03 -0400 MIME-Version: 1.0 Date: Mon, 23 Mar 2015 11:21:02 +0300 Message-ID: Subject: Logitech T650 is unusable since 3.19.0 From: =?UTF-8?B?0JvQtdC20LDQvdC60LjQvSDQmNCy0LDQvQ==?= To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, after update from 3.18.7 to 3.19.x my Logitech touchpad became almost unusable. I use OpenSUSE Thumbleweed and tried both custom and vanilla kernels. AFAIK, the problem may come with this changes: http://lkml.iu.edu/hypermail/linux/kernel/1412.1/03246.html The symptoms are as follows. 1. The touch density is twice reduced: I have to make longer finger motion for a smaller pointer movement. Possibly, it's because the KDE starts to detect the touchpad as touchpad - and not the mouse as it was before - and applies some preferences like the pointer acceleration, etc. 2. Some gestures stopped to work: 3-finger swipe up, down, left, right - so, there are no more "history back-forward", "SuperKey", and "SuperKey + d". 3. Multi-finger tap detection is awful: it doesn't detect 3-finger tap in 50%, it sometimes detects 2-finger tap instead of click+drag, or when the second finger is slightly touching the surface. Can anyone make a suggestion what should I do, but to stay on an older kernel version?