From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756076Ab2ATVxo (ORCPT ); Fri, 20 Jan 2012 16:53:44 -0500 Received: from pecan.exetel.com.au ([220.233.0.17]:52451 "EHLO smtp.po.exetel.com.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753832Ab2ATVxn (ORCPT ); Fri, 20 Jan 2012 16:53:43 -0500 Message-ID: <4F19E262.6060507@exemail.com.au> Date: Sat, 21 Jan 2012 08:53:38 +1100 From: Padfoot Reply-To: padfoot@exemail.com.au User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20111224 Thunderbird/9.0.1 MIME-Version: 1.0 To: Greg KH CC: linux-kernel@vger.kernel.org Subject: Re: PROBLEM: Kernel version 3.2.1 usb touchscreen device not recognised [UDEV? USBINPUT? HOOK] References: <4F192242.1070909@exemail.com.au> <20120120160210.GA21565@kroah.com> <4F19CB06.6040801@exemail.com.au> <20120120204444.GA20799@kroah.com> In-Reply-To: <20120120204444.GA20799@kroah.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 21/01/12 07:44, Greg KH wrote: > On Sat, Jan 21, 2012 at 07:13:58AM +1100, Padfoot wrote: >> On 21/01/12 03:02, Greg KH wrote: >>> 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 >>> >> Hi Greg, >> >> I am not a kernel dev, nor have I ever compiled a kernel, so I don't >> think I am able to help with a git bisect to locate the offending >> commit. I am just a regular user running pre-compiled packages on my >> Arch Linux distro. But, of course I am happy to assist wherever I >> can. > If you want to build your own kernel, there are lots of instructions on > how do this online (google for 'linux kernel in a nutshell' for a free > book about this.) > > Otherwise, can you file a bug with the arch linux developers? They > might be able to help you out here better as you are using a distro > kernel. > > good luck, > > greg k-h > Thanks for your assistance Greg. Benjamin in linux-input has provided the solution. This can be marked as solved. Thank you.