From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754176Ab2ATQCT (ORCPT ); Fri, 20 Jan 2012 11:02:19 -0500 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:42774 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753532Ab2ATQCR (ORCPT ); Fri, 20 Jan 2012 11:02:17 -0500 X-Sasl-enc: LUErHc5xsI/bMszXaD5ppE28Kc2s39MCXRF2Pjsfxxn1 1327075337 Date: Fri, 20 Jan 2012 11:02:10 -0500 From: Greg KH To: Padfoot Cc: linux-kernel@vger.kernel.org Subject: Re: PROBLEM: Kernel version 3.2.1 usb touchscreen device not recognised [UDEV? USBINPUT? HOOK] Message-ID: <20120120160210.GA21565@kroah.com> References: <4F192242.1070909@exemail.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F192242.1070909@exemail.com.au> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 20, 2012 at 07:13:54PM +1100, Padfoot wrote: > Upgrade from kernel 3.1.9 to 3.2.1 eGalax usb touchscreen device is > no longer recognised. > > Device is an Acer Iconia Tab w501 with inbuilt touchscreen. Screen > is a pci device but is connected on boot as a usb input device. > Issue appears to be with either UDEV or USBINPUT boot hook failing > to recognise the device as can be seen in the dmesg.3.2.1 > attachment. > > Downgrading to kernel 3.1.9 corrects the issue. Can you run 'git bisect' between 3.1.0 and 3.2.0 to find the problem commit here? Also, you might want to cc: the linux-input developers, they can help you out much better than the general list can. greg k-h