Hi Chris,

Pad was switched to absolute device.  See the 12-15-10 commit "Switch
the pad to forced absolute mode":
http://linuxwacom.git.sourceforge.net/git/gitweb.cgi?p=linuxwacom/xf86-input-wacom;a=commit;h=ce98b0a20862291892fc7a3110e4779cd69dd5ba
 And the commits around it.

Favux

On Mon, Jan 10, 2011 at 9:39 AM, Chris Bagwell <ch...@cnpbagwell.com> wrote:
> In reply to myself... oh yeah, the touchpad is a relative device. :-)
>
> but maybe something in this area has changed slightly and needs a look
> at.  I'll try to dig deeper when I have a minute.
>
> Chris
>
> On Mon, Jan 10, 2011 at 8:48 AM, Chris Bagwell <ch...@cnpbagwell.com> wrote:
>> Oh, if I do two finger touch, I'm able to get device type to change to
>> 2 but I also get an additional interesting message (the last line in
>> this snippet):
>>
>> [1084191.183] (II) /dev/input/event6 (10:wcmEvent): channel = 0
>> [1084191.183] (II) /dev/input/event6 (10:wcmEvent): c=0 i=3 t=2 s=1 x=9130 
>> y=701
>> 2 b=0 p=0 rz=0 tx=0 ty=0 aw=0 rw=0 t=0 df=0 px=1 st=1084190800 cs=4
>> [1084191.183] (II) /dev/input/event6 (10:wcmFilterCoord):
>> common->wcmRawSample = 4
>> [1084191.183] (II) /dev/input/event6 (10:wcmCheckSuppress): level = 2
>> return value = 2
>> [1084191.183] (II) /dev/input/event6 (10:commonDispatchDevice): device type 
>> = 2
>> [1084191.183] (II) /dev/input/event6 (10:commonDispatchDevice): Ignore
>> non-movement relative data
>>
>> So perhaps touch device was set to relative mode at some point during
>> init phase.
>>
>> Chris
>>
>> On Mon, Jan 10, 2011 at 8:45 AM, Chris Bagwell <ch...@cnpbagwell.com> wrote:
>>> Something about that bi-sect doesn't make sense.  Your pointing to a
>>> commit that contains no code.
>>>
>>> I only have a few minutes with touch pad right now but tried git and
>>> can also reproduce.
>>>
>>> The only thing that looked suspicious in log files is this:
>>>
>>> [1082669.808] (II) /dev/input/event6 (10:commonDispatchDevice): device type 
>>> = 4
>>>
>>> I believe that says its detected as a cursor device?  There is a case
>>> statement for ABS_MT_SLOT that is supposed to set that value correctly
>>> that seems not to be working now.
>>>
>>> Can you confirm if your using wacom-input Bamboo drivers as well?
>>> This may be MT specific (I hope).
>>>
>>> Chris
>>>
>>> On Mon, Jan 10, 2011 at 2:22 AM, Favux ... <favux...@gmail.com> wrote:
>>>> Hi Peter,
>>>>
>>>> Bisection shows it is the 12-21-10 "Merge branch 'multimonitor-purge'"
>>>> commit.  Its snapshot xf86-input-wacom-68351da breaks touch.  Although
>>>> rather than slamming to the left it jitters horizontally in place over
>>>> about 1.5 cm.  The prior commit of the same date "Bamboo tablet does
>>>> not report device_id anymore" snapshot xf86-input-wacom-2b9eb3d still
>>>> has working touch.
>>>>
>>>> Favux
>>>>
>>>> On Sun, Jan 9, 2011 at 11:53 PM, Peter Hutterer
>>>> <peter.hutte...@who-t.net> wrote:
>>>>>
>>>>> can you run a bisect over the code to identify which commit broke it?
>>>>> three different features got merged, multimonitor removal, the scrollring
>>>>> fixes and chris' bamboo patches. Not sure which one caused the bug.
>>>>>
>>>>> Cheers,
>>>>>  Peter
>>>>>
>>>>
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>>
>

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