On Sun, Oct 23, 2011 at 8:22 PM, Peter Hutterer
<peter.hutte...@who-t.net> wrote:
>>
>> > what other axes are on this device? if it's just 2 anyway this is a
>> > nonissue. if there are other axes we need to rely on the client to 
>> > determine
>> > which axis represents what anyway (already the case for XI 1.x)
>> >
>>
>> I haven't came up to speed on application side or if server can handle
>> wholes in valuator lists and why I haven't submitted anything yet.  I
>
> XI2 handles it on the protocol side,, the server should be able to handle it
> nowadays too though that code has not seen much exposure yet. note that to
> use this in the wacom driver would mean either ifdef hell or dropping
> support for older server versions since currently we're still using the old
> input apis.

I know you don't like ifdefs (me neither). But I don't feel we can
afford either dropping support for older servers or maintaining more
than one xf86-input-wacom branch. I am waiting for the day that I can
drop linuxwacom for good.

Hope someone can save us from this "hell" ;).

>> 1) My device advertises Pressure support with range of 0-4096 but
>> never sends anything.  If I was an application writer (I'm not, BTW,
>> so could be wrong :-) ), I would make assumptions when I saw that
>> valuator declared.  I'd stop looking for left click and instead start
>> looking for some non-zero pressure value as left click.
>
> that sounds like a kernel bug. the device shouldn't advertise the axis
> if it doesn't use it (possibly quirked out if the HW is at fault)

It is not a kernel driver issue. It is an issue in wcmInitAxes
(xf86Wacom.c). We did not check if the axis is defined or not before
calling InitValuatorAxisStruct.

Ping

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