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

On 21/01/12 03:02, Greg KH wrote:

On Fri, Jan 20, 2012 at 07:13:54PM +1100, Padfoot wrote:

quoted

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