From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756204Ab2ATV5y (ORCPT ); Fri, 20 Jan 2012 16:57:54 -0500 Received: from pecan.exetel.com.au ([220.233.0.17]:34406 "EHLO smtp.po.exetel.com.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755128Ab2ATV5x (ORCPT ); Fri, 20 Jan 2012 16:57:53 -0500 Message-ID: <4F19E35F.1000201@exemail.com.au> Date: Sat, 21 Jan 2012 08:57:51 +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: Benjamin Tissoires CC: Greg KH , linux-kernel@vger.kernel.org, linux-input@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> In-Reply-To: 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 07:50, Benjamin Tissoires wrote: > Hi Lachlan, > > Well, many eGalax devices are multitouch devices, and can not be > handled by the generic input hid layer without having strange issues. > We have a patch in 3.2 that auto detect such devices and release them > from the generic input stack. > Then, it's easier for people to handle the devices through > hid-multitouch as the recompilation of the kernel is not required > anymore. > I also submitted a patch to catch multitouch devices in > hid-multitouch, but it has not been accepted as it would require > everybody to load hid-multitouch for every hid device. > > To enable your device, do (as root) > # modprobe hid-multitouch > # echo 3 VID PID 104> > /sys/module/hid_multitouch/drivers/hid\:hid-multitouch/new_id > > where: > - 3 is the bus, usb here > - VID: vendor ID (must be 0eef in your case) > - PID: product ID > - 104 is the number of the right class of multitouch device to use > (see MT_CLS_* definitions in hid-multitouch) > VID/PID can be retrieved from lsusb. > > If it's working, then you should also give us your PID so that we can > add it in the source of hid-multitouch. > > Cheers, > Benjamin > > > On Fri, Jan 20, 2012 at 21:13, 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. >> >> Cheers. >> Lachlan >> -- >> 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 Hi Benjamin, Thankyou very much. Your solution has worked brilliantly. The device parameters I had to pass to hid-multitouch are as follows: echo 3 0eef 7302 259 > /sys/mod........ I also have to use the binary daemon driver from eGalax for the device to work: http://home.eeti.com.tw/web20/eGalaxTouchDriver/linuxDriver.htm Cheers. Lachlan.