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    SubjectRe: PROBLEM: Kernel version 3.2.1 usb touchscreen device not recognised [UDEV? USBINPUT? HOOK]
    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.

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