Friends, can't anyone help me?
On Wed, Jan 26, 2011 at 20:24, AndrewP <[email protected]> wrote:
> I guess nobody has a clue on this.
>
>
> On Tue, Jan 25, 2011 at 21:03, AndrewP <[email protected]> wrote:
>
>> Have you gave up on me? :)
>> How tablet is initialized? is there any way to calibrate it?
>>
>>
>> On Sun, Jan 23, 2011 at 20:52, AndrewP <[email protected]> wrote:
>>
>>> I refreshed my memories with Windows7 and I must say, distortions I've
>>> said about earlier might be a software issue, because I didn't see them on
>>> plain desktop. So everything feels fine in Windows7 I sketched several
>>> pictures there with my natural style and handling, but didn't notice
>>> anything outrageously wrong. I must admit cursor don't coincide exactly with
>>> the tip as in Linux, even after a so called "calibration", but still
>>> everything feels normal. I can't get any logs from there so you just have my
>>> word. I have only one pen, and it is the same in either case.
>>>
>>>
>>> On Sun, Jan 23, 2011 at 21:41, AndrewP <[email protected]> wrote:
>>>
>>>> Chris, I managed to try your suggestions:
>>>> this "if (!coord.tip && !coord.eraser) ds->pressure = 0; " didn't
>>>> discard "false" clicks. As there is Tip pressure reported by
>>>> isdv4-debugger.
>>>> 2. and "if(ds->pressure > 128) ds->pressure = 0;" possibly shoved off
>>>> more than we needed, because I lost click instantly, and couldn't achieve
>>>> getting a pressure level. I mean I press on the screen clicking on
>>>> something, but even I still press click is gone.
>>>>
>>>> I did have "false" clicks in Windows 7, but far less frequently, also
>>>> had there a weird distortions on the edge of the screen, really bad ones
>>>> (cursor will move away from the edge and click somewhere), they wasn't
>>>> constant, but sometimes, anyway never had such thing in Linux. Only when I
>>>> tilt my pen steeply enough cursor can get away from the edge by some 25mm,
>>>> then when I straighten pen up a little it goes back to the tip, but never
>>>> had a click when that happened.
>>>>
>>>> Do you really think it could be a pen issue? Frankly, I'm willing to
>>>> believe that, because it will be lesser evil for me.
>>>> But I don't know where to find a compatible pen, could you tell me which
>>>> one I can try to find? if getting another one I wish to get thicker one
>>>> more
>>>> like Intuos Grip Pen.
>>>>
>>>>
>>>>
>>>> On Fri, Jan 21, 2011 at 14:51, Chris Bagwell <[email protected]>wrote:
>>>>
>>>>> Wow, I do not know where i got line 171 from. Its around line 721
>>>>> that it needs to be done. To give you some context, it would be added
>>>>> after this to reset pressure values:
>>>>>
>>>>> /* pressure */
>>>>> ds->pressure = coord.pressure;
>>>>>
>>>>> BTW, Nicolas posted agreeing with Ping that tilt issue sounds very
>>>>> much like a stylus problem.
>>>>>
>>>>> Can you confirm one more time that you do not see similar behavior
>>>>> under Windows with same stylus? I think I recall you saying behavior
>>>>> is different. Is it different after you made MaxZ=255 change?
>>>>>
>>>>> Chris
>>>>>
>>>>> On Fri, Jan 21, 2011 at 12:16 AM, AndrewP <[email protected]> wrote:
>>>>> > Are you sure it should go there? I couldn't compile with this
>>>>> correction.
>>>>> > http://dpaste.org/dF7J/
>>>>> > On Thu, Jan 20, 2011 at 14:21, Chris Bagwell <[email protected]>
>>>>> wrote:
>>>>> >>
>>>>> >> So, it sounds like its basically working for you now?
>>>>> >>
>>>>> >> For tilt reporting pressure, I suspect this is just way inductive
>>>>> >> technology works with limitations touchscreens impose. Maybe Ping
>>>>> can
>>>>> >> confirm.
>>>>> >>
>>>>> >> The only additional tweaks I can think of:
>>>>> >>
>>>>> >> 1) Maybe pressure values from hardware should be ignored unless
>>>>> either
>>>>> >> tip or eraser press is reported by hardware. Does tip/eraser map to
>>>>> a
>>>>> >> real internal button indicating physical touch? I suspect so since
>>>>> >> there is a delay in ability to detect pin vs. eraser.
>>>>> >>
>>>>> >> To test this idea, edit wcmISDV4.c around line 171 and add "if
>>>>> >> (!coord.tip && !coord.eraser) ds->pressure = 0;"
>>>>> >>
>>>>> >> 2) Maybe hardware is reporting maximum of 127 values for a reason.
>>>>> >> Even though its returning 0-255 we might need to ignore all pressure
>>>>> >> values below 128.
>>>>> >>
>>>>> >> To test this idea, edit wcmISDV4.c around line 171 and add if
>>>>> >> (ds->pressure > 128) ds->pressure = 0;"
>>>>> >>
>>>>> >> Chris
>>>>> >>
>>>>> >> On Thu, Jan 20, 2011 at 4:30 AM, AndrewP <[email protected]>
>>>>> wrote:
>>>>> >> > 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
>>>>> >> >
>>>>> >> >
>>>>> >
>>>>> >
>>>>>
>>>>
>>>>
>>>
>>
>
------------------------------------------------------------------------------
Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)!
Finally, a world-class log management solution at an even better price-free!
Download using promo code Free_Logger_4_Dev2Dev. Offer expires
February 28th, so secure your free ArcSight Logger TODAY!
http://p.sf.net/sfu/arcsight-sfd2d
_______________________________________________
Linuxwacom-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
