Hi Jonas,

056a:0094 has never been supported by this project. I am not sure
which kernel driver your device was using when it was working. The
LENOVO X220t supported by the community is 056a:00e6. I do not have
the tablet specs for LENOVO systems. So, I am not sure why your id is
0094. Your guess of malfunction firmware might be right.

Let's first make sure your system is not in firmware update mode. I
don't see how it could be. But, just in case, please

Turn off your computer. Disconnect power and take the battery out. Let
the system sit for a while, say a few minutes. This will reset any
commands left on your system.

Then start your system and check dmesg to see if your device is
listed. You can use "dmesg | grep 056a" to see all Wacom devices in
your system.

Meanwhile, if your are curious, you can update your kernel driver from
input-wacom or linux-wacom-git to see if the driver gives you anything
new.

Ping

On Mon, Jul 30, 2012 at 7:12 PM, Jonas Jelten <jel...@in.tum.de> wrote:
> Hi list!
>
> After updating packages and rebooting 1 week ago, my integrated Wacom
> tablet ISDv4 (pen and touch) (056a:0094) no longer works.
> Laptop: LENOVO X220t 4296CTO/4296CTO, BIOS 8DET61WW (1.31 ) 04/25/2012
> Arch Linux x86_64, testing
>
> Things that got updated and had to do with wacom:
>
> [2012-01-17 08:37] upgraded xf86-input-wacom (0.12.0-1 -> 0.13.0-1)
> [2012-02-12 12:21] upgraded xf86-input-wacom (0.13.0-1 -> 0.13.0-2)
> [2012-03-10 18:28] upgraded xf86-input-wacom (0.13.0-2 -> 0.14.0-1)
> [2012-04-01 22:15] installed libwacom (0.4-1)
> [2012-04-14 14:12] upgraded xf86-input-wacom (0.14.0-1 -> 0.14.0-2)
> [2012-05-13 14:35] upgraded xf86-input-wacom (0.14.0-2 -> 0.15.0-1)
> [2012-07-03 02:40] upgraded libwacom (0.4-1 -> 0.6-1)
> [2012-07-13 09:03] upgraded xf86-input-wacom (0.15.0-1 -> 0.16.0-1)
> [2012-07-23 19:10] reinstalled xf86-input-wacom (0.16.0-1 -> 0.16.0-1)
> [2012-07-25 03:40] reinstalled libwacom (0.6-1 -> 0.6-1)
> [2012-07-28 10:05] Running 'pacman -U
> /tmp/yaourt-tmp-jj/PKGDEST.opX/xf86-input-wacom-git-20120728-1-x86_64.pkg.tar.xz'
> [2012-07-28 10:05] removed xf86-input-wacom (0.16.0-1)
> [2012-07-28 10:05] installed xf86-input-wacom-git (20120728-1)
> [2012-07-28 10:13] removed xf86-input-wacom-git (20120728-1)
> [2012-07-28 10:13] installed xf86-input-wacom (0.16.0-1)
>
> Kernel updates:
>
> [2012-07-17 19:55] upgraded linux (3.4.4-3 -> 3.4.5-1)
> [2012-07-20 19:29] upgraded linux (3.4.5-1 -> 3.4.6-1)
> [2012-07-23 16:11] upgraded linux (3.4.6-1 -> 3.5-1)
> [2012-07-30 14:53] upgraded linux (3.5-1 -> 3.4.6-1) //downgradetest
> [2012-07-30 15:00] upgraded linux (3.4.6-1 -> 3.5-2)
>
> The day it stopped working was 2012-07-23 I think (I rebooted cause of
> new kernel, dunno the uptime till then).
>
>
> I already figured a couple of things out:
>
> No difference between Kernel 3.4.6 and 3.5 (this was my first guess).
> My device USB id: 056a:0094 is mentioned nowhere: neither in libwacom,
> modinfo wacom, or on any serious documentation on the internet.
> No driver is loaded for the device (as the id is missing in modinfo), so
> i tried to manually assign it with
>
> # echo "056a 0094" > /sys/bus/usb/drivers/wacom/new_id
>
> but this didn't help. Next thing i might want to try is downgrade
> xf86-input-wacom, but that wouldn't add the usbid to the kernel module.
>
> Maybe these are related errors:
> http://lists.debian.org/debian-kernel/2012/06/msg00869.html
> http://lists.debian.org/debian-kernel/2012/06/msg00430.html
>
> Other users (https://bbs.archlinux.org/viewtopic.php?id=119332) have a
> different usb id for their tablet: 056a:00e6, maybe my tablet's firmware
> is messed up and reports a different usbid from now.
>
> I would appreciate any help for getting the tablet to work again, i need
> it for university (ok, holidays for next 2 months).
>
>
> tl;dr X220t Tablet no longer working after updates, usbid listed
> nowhere, downgrading kernel doesn't fix -> help please
>
>
> Cheers,
>
> Jonas
>
>
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