From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Tibor Billes" Subject: Possible regression 3.8.7 -> 3.9 with Dell touchpad Date: Thu, 09 May 2013 22:59:58 +0200 Message-ID: <20130509205958.89890@gmx.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mout.gmx.net ([212.227.17.20]:51375 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752590Ab3EIVAB (ORCPT ); Thu, 9 May 2013 17:00:01 -0400 Received: from mailout-eu.gmx.com ([10.1.101.216]) by mrigmx.server.lan (mrigmx001) with ESMTP (Nemesis) id 0Ld2ys-1UAJwd3JMO-00iBvV for ; Thu, 09 May 2013 22:59:59 +0200 Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov Cc: linux-input@vger.kernel.org Hi, I found that after upgrading my kernel from 3.8.7 to 3.9 my touchpad on= ly works partly. By that I mean I can use the touchpad to move the cursor around, but I cannot click with it by tapping. My machine is a Dell Latitude E5530. Since it is 100% reproducible on my machine, I bisected= it, and found this commit: commit 1302bac33d9e88cd43e482191a806998f3ed43cc Author: Kevin Cernekee Date: =C2=A0 Wed Feb 13 22:27:08 2013 -0800 =C2=A0 =C2=A0Input: ALPS - add support for "Rushmore" touchpads =C2=A0 =C2=A0 =C2=A0 =C2=A0Rushmore touchpads are found on Dell E6230/E6430/E6530. =C2= =A0They use the V3 =C2=A0 =C2=A0protocol with slightly tweaked init sequences and report = formats. =C2=A0 =C2=A0 =C2=A0 =C2=A0The E7 report is 73 03 0a, and the EC report is 88 08 1d =C2=A0 =C2=A0 =C2=A0 =C2=A0Credits: Emmanuel Thome reported the MT bitmap changes. =C2=A0 =C2=A0 =C2=A0 =C2=A0Signed-off-by: Kevin Cernekee =C2=A0 =C2=A0Tested-by: Dave Turvene =C2=A0 =C2=A0Signed-off-by: Dmitry Torokhov I did the bisection between 3.8.7 and 3.9, but also tried 3.9.1, it is = bad too. I also tried reverting that commit to make sure that it really is what made my touchpad not working. The revert did fix my problem. That's all I gathered so far, but I'd be happy to help further in any w= ay I can, just let me know. Thanks, Tibor -- To unsubscribe from this list: send the line "unsubscribe linux-input" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html