From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Nikula Subject: Re: Issues with touchpad / touchscreen on yoga 900 Date: Fri, 30 Oct 2015 09:58:14 +0200 Message-ID: <56332316.90506@linux.intel.com> References: <20151029112913.1036f00b@voldemort.scrye.com> <20151029183032.GA8992@katana> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com ([134.134.136.24]:60864 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758878AbbJ3H6R (ORCPT ); Fri, 30 Oct 2015 03:58:17 -0400 In-Reply-To: <20151029183032.GA8992@katana> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: Wolfram Sang , Kevin Fenzi Cc: linux-i2c@vger.kernel.org, Mika Westerberg , Andy Shevchenko Hi On 10/29/2015 08:30 PM, Wolfram Sang wrote: > On Thu, Oct 29, 2015 at 11:29:13AM -0600, Kevin Fenzi wrote: >> Greetings. >> >> I'm having problems with a lenovo yoga 900 not seeing it's touchscreen >> or touchpad. >> >> Downstream bug: >> https://bugzilla.redhat.com/show_bug.cgi?id=1275718 >> >> The problem parts of dmesg seem to be: >> >> Oct 26 15:20:08 localhost kernel: i2c_designware i2c_designware.1: i2c_dw_handle_tx_abort: lost arbitration >> Oct 26 15:20:08 localhost kernel: i2c_hid i2c-SYNA2B29:00: hid_descr_cmd failed >> Oct 26 15:20:08 localhost kernel: i2c_designware i2c_designware.2: i2c_dw_handle_tx_abort: lost arbitration >> Oct 26 15:20:08 localhost kernel: i2c_hid i2c-ELAN21EF:00: >> hid_descr_cmd failed >> >> This is with 4.3.0-0.rc7.git1.1.fc24.x86_64 (post rc7 4.3.0). >> >> Happy to gather further info or try patches. ;) > Could you try this test patch from Mika that prints the parameters it gets from ACPI and forces using calculated ones (your quirk was supposed to be doing the same): http://www.spinics.net/lists/linux-i2c/msg21239.html Another fix from Mika that comes to my mind is "HID: multitouch: Fetch feature reports on demand for Win8 devices" which is sitting in linux-next. Not sure is it related but probably worth to try. https://lkml.org/lkml/2015/9/28/404 -- Jarkko