Finally I saw maxZ=255 in Xorg.0.log when set maxZ to 255 in git drivers
also xinput shows level 2048 when I press much stronger. But still it
catches
pressure very willingly:
I get values about 800-1000 with light press.
0-168 when not even touching it. Don't see anything wrong when holding pen
exactly straight up. But when holding in my natural way it's even up to 168.
If I tilt it
even more I get values around 600-800 easily (no touching).
After values of 1600 it feels pretty linear.
Tried several Threshold values as it should be it affect only when "click"
is actually
recognized, thus limiting a pressure range.
On Wed, Jan 19, 2011 at 15:02, Chris Bagwell <[email protected]> wrote:
> On Tue, Jan 18, 2011 at 4:18 PM, AndrewP <[email protected]> wrote:
> > How do I tell if some other driver is using the device?
> > I removed tablet device from xorg.conf
> > and I guess inputattch won't keep working if serial port is already used.
> > I get pressure in gimp but it feels way less then even 127 levels. of
> course
> > it is very
> > subjective but I get around 30-40 levels and I need to press really light
> to
> > be able
> > to use it.
> >
>
> After you upgraded to latest git, you did not re-patch wcmISDV4.cc to
> force MaxZ to 254. Can you do that and try gimp again?
>
> Please realize that without this change that pressure of 127 to 254
> will all equal 2048. Also, what did you end up setting your Threshold
> to? Somewhere around 800?
>
> Divide what ever that Threshold value is by 16. Example: 800/16=50.
> So this example means that only pressures of 50-127 are useful for
> drawing. A very small range indeed and very much shifted to light
> pressure side.
>
> If you change MaxZ=254 then it becomes 800/8=100 so 100-254 are valid
> pressure ranges. A much greater range. You'll want to also adjust
> your Threshold value down by 1/2 since Thresholds are different units
> once the MaxZ=127 bug is fixed (the 16 vs 8 I mentioned). So halving
> to Threshold=400 would give you pressure ranges of 50-254.
>
> Chris
>
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