Aparently it was fix in latest xserver-xorg-core update though.
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wacom stylus jumps with latest xserver-xorg-core
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Still present in Ubuntu 12.10. It isn't dependent on Qt - it's system
wide (all applications and desktop).
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Title:
wacom stylus jumps
Then it's a different bug.
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Title:
wacom stylus jumps with latest xserver-xorg-core
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** Also affects: wizardpen
Importance: Undecided
Status: New
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** No longer affects: qt4-x11 (Ubuntu Natty)
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OT: How should I properly add another package affected by this bug? I
tried to add gimp, but it replaced qt4-x11
** Package changed: qt4-x11 (Ubuntu) = gimp (Ubuntu)
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Please file a new bug against Gimp. You can refer to this bug in the
description if you want.
** Package changed: gimp (Ubuntu) = qt4-x11 (Ubuntu)
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A have this problem with jumping cursor when using GIMP under Oneiric.
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Title:
wacom stylus jumps with latest xserver-xorg-core
To
I still have this problem.
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wacom stylus jumps with latest xserver-xorg-core
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qt4-x11 (Ubuntu Natty)
Status: New = Confirmed
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Unstable PPA does not contain anything useful for Natty?
https://launchpad.net/~utouch-
team/+archive/unstable?field.series_filter=natty
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Title:
There is a new bug produced by this patched qt :
https://bugs.launchpad.net/ubuntu/+source/koffice/+bug/864014
Please take a look
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Title:
wacom
Yes, the X server change that caused this issue was first released in
Natty. An SRU for this issue would be good.
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Title:
wacom
** Package changed: xorg-server (Ubuntu) = qt4-x11 (Ubuntu)
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Title:
wacom stylus jumps with latest xserver-xorg-core
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** Branch linked: lp:~kubuntu-packagers/kubuntu-packaging/qt
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Title:
wacom stylus jumps with latest xserver-xorg-core
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This bug was fixed in the package qt4-x11 - 4:4.7.4-0ubuntu4
---
qt4-x11 (4:4.7.4-0ubuntu4) oneiric; urgency=low
[ Felix Geyer ]
* Move documentation building to override_dh_auto_install where
dh_listpackages works as expected with dpkg-buildpackage. (LP: #857377)
[ Didier
I see in some of the comments this is on Natty too. Should this be
considered for a Natty SRU?
** Also affects: qt4-x11 (Ubuntu Natty)
Importance: Undecided
Status: New
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Gaah! I knew it had to be something simple that I overlooked.
Pushed a new version to the build service. You know what to do. :)
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Title:
wacom
The PPA packages fix it for me.
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Too bad, I've an issue to test the PPA: some newer version installed
instead
(***4:4.7.4-0ubuntu3https://launchpad.net/ubuntu/oneiric/+source/qt4-x11/4:4.7.4-0ubuntu3
)*, and trying to force version on all those qt4/libqt4 packages looks
complicated…
As Jussi confirmed the fix is ok for him,
I'll push a newer version. In the mean time you can download the
packages manually and install them with dpkg -i *.deb.
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Title:
wacom stylus
I could not upload because the unstable PPA has run out of space.
Working on it...
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Title:
wacom stylus jumps with latest xserver-xorg-core
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This patch has been accepted into Ubuntu proper. It will be in the next
Qt package, which will probably be released on Monday.
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Title:
wacom
Yees, that's good news!
I confirm I've tested latest PPA build fix is OK (both Graphire4 and Intuos3
works good)
:.)
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Title:
wacom stylus jumps
The reason Krita fails is that it uses the high resolution location and
not cursor location.
High resolution location evaluation is broken whenever the X server does
not send both X and Y coordinates.
Thus the valuator code is still wrong somehow.
I have pushed a hack fix to the PPA that just
Updated with your new patch, now there's no stroke at all in krita and
tablet example demo.
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Title:
wacom stylus jumps with latest
Good news! I was able to make my 2 wacom devices (touchscreen and
Intuos2) work correctly in Krita using the attached patch against Qt.
Chase Douglas was right about Qt incorrectly using the recieved events
because not all axis are sent. I simply updated Jussi's patches like
that:
Instead of just
I have just uploaded a Qt version to the PPA that preserves the old
values. It should finish building after four hours or so. Please try it
out once it is finished. The new version is 4.7.4-0ubuntu3~utouch2.
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The new packages do not fix this for me. I still get ghost jumps.
This makes sense, because if the valuators are parsed incorrectly, then
the Qt tablet app should draw additional loops as well. I even tried
moving the window partially outside the top left corner to make sure any
paint operations
The Krita code that deals with tablet events seems to be this in
kis_canvas_controller.cpp:
-
void KisCanvasController::Private::emitPointerPositionChangedSignals(QEvent
*event)
{
if (!coordinatesConverter) return;
QPoint pointerPos;
QMouseEvent *mouseEvent =
I had a look at the Krita sources, as pointed out by Jussi, and the
problem does not come from the kis_canvas_controller code, but seems to
come from kis_canvas_widget_base.cpp.
There, we have the following code:
void KisCanvasWidgetBase::processTabletEvent(QTabletEvent *e)
{
A new Qt version consisting of current packaged code + the valuator
patch has just been pushed to uTouch team's unstable PPA. Once it
finishes building (and there are no build failures :), please test it
out.
It is oneiric only and may eat your soul if mishandled. So be careful.
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I've just tried in oneiric, added updates from uTouch PPA unstable:
still same symptoms in Krita (Graphire4: doesn't draw at all ; Intuos3: draw
with pressure but same buggy parasit diagonal lines)
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Animitim, the uTouch Qt4 package is still building (at least from what I can
see), it is the following version:
qt4-x11 - 4:4.7.4-0ubuntu3~utouch1
So I think you don't have the update yet. Will try tonight myself.
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And the jumps happen when I move the pen slowly. When moving it fast,
there are no jumps.
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Title:
wacom stylus jumps with latest
It has built now. The demo app no longer produces huge rectangles for
me.
However Krita does the weird stylus jumps now. Earlier it did not. The
jumps do not always go to the top left corner, though they do go mostly
towards the top left.
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j-b-m : ok so I re-updated.
Now it's a bit better as my Graphire4 works now as the Intuos3.
But both still have the jumps.
And as Jussi said above I confirm that strangely the jumps stop when moving
very fast.
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Bugs, which
Animtim, could you try the qt4 tablet test application mentioned above?
Does it behave properly with both pressure and tilt based line width?
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Tested /usr/lib/qt4/examples/widgets/tablet/tablet, works ok with both
pressure and tilt.
2011/9/20 Jussi Pakkanen jussi.pakka...@canonical.com
Animtim, could you try the qt4 tablet test application mentioned above?
Does it behave properly with both pressure and tilt based line width?
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My guess is that although we now are getting the right data into the
right properties, Qt probably is not keeping track of the unchanged
valuator values. So, if an event comes in with a valuator range of [1,1]
(which implies that only the Y valuator changed), then Qt needs to copy
the old X,
Attached is a quick patch that inspects that valuator accesses do not go
out of bounds. I changed only the motion and button accesses and not the
Wacom one. The reason being that it seems to loop over all data so it
should be valid.
I have not tested the patch in any way, so it might not even
I can confirm that on my Wacom Bamboo Pen Touch the behaviour is
exactly the same as j-b-m. The only addition being that I get the huge
rectangles only when I stop moving the pen (but keep it touching the
surface).
My tablet probably does not provide tilt information so could you try
the
I looked into Qt and there are three locations where x and y tilt values
are obtained. They are all in qapplication_x11.cpp in the function
QETWidget::translateXinputEvent.
The first one is this (I have removed quite a lot of lines, check the
original to be sure):
s =
Some background information on XInput: XInput 1.x added valuators
which are axes that provide data beyond just X and Y. Unfortunately, in
the infinite wisdom of the XInput 1.x creators, the valuators were not
labeled. Thus, the Qt code has #defines like WAC_XTILT_I. Essentially,
in XI 1.x the
Hmm, looks like we are progressing in what the problem is.
As suggested by Jussi, I tried the tablet sample app from qt4-demos, and
I can confirm that pressure works fine.
However in that demo app, when I try to use the tilt value from the
tablet to set line width (in the Tablet menu Line width
This may be a bug in Krita.
When I install qt4-demos and run
/usr/lib/qt4/examples/widgets/tablet/tablet, pressure works perfectly.
Can someone else with this bug try if the tablet test app works?
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This is getting weirder and weirder. I updated my packages and tried
again. Now the behaviour is different. Just adding the struct elements
does *not* break pressure. Previously it did. I verified on previous
test results I had written down with an actual pen and paper.
What happens now is
32 bit Kubuntu Natty + 32 bit Kubuntu Oneric
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Title:
wacom stylus jumps with latest xserver-xorg-core
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The cause of (some part) of this bug is somewhere else. I removed all
code from patch 503 and left only the part that adds new fields to
structs. Effectively it looks like this:
--- a/include/inputstr.h
+++ b/include/inputstr.h
@@ -335,6 +335,8 @@ typedef struct _TouchPointInfo {
unsigned
On 09/12/2011 05:44 AM, Jussi Pakkanen wrote:
The cause of (some part) of this bug is somewhere else. I removed all
code from patch 503 and left only the part that adds new fields to
structs. Effectively it looks like this:
--- a/include/inputstr.h
+++ b/include/inputstr.h
@@ -335,6 +335,8
I just tested using latest Oneiric xserver-xorg (1.10.4)
If I remove all the latest patches starting from the 503, it works fine
(pressure ok and no jumping lines).
I see no difference if I only apply the struct changes described by Jussi in
comment #32. Pressure and everything still works
I recorded a couple of pressure swipes with a Wacom. When I play back
the recordings, Krita does not detect any pressure changes. Does anyone
else get pressure info when playing back these traces?
** Attachment added: wacom-bamboo-pen-n-touch.device
** Attachment added: wacom-bamboo-pen-n-touch-pressure.record
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/799202/+attachment/2375684/+files/wacom-bamboo-pen-n-touch-pressure.record
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Pressure works for me on my own recordings. Maybe you need some
calibration or configuration of the Krita brush. I can see a very small
sign of pressure sensitivity on your recording : the beginning of the
first stroke is slightly grey , meaning the opacity was not at 100%
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I build my own X server packages without patches 504, 503 or 502. In
those cases pressure is properly recognised from both evemu recordings.
With patch 502 it is not. Using the Wacom directly works on both (but
breaks with 504 as with others).
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I get the same behaviour: regular oneiric X does not draw anything on
the trace files, taking out patches 503 and 504 makes things work.
However there is one major difference.
When I use my own Wacom Bamboo Pen Touch, pressure sensitivity works.
The recordings only produce lines of constant
Another difference: when running an X server with all patches, Krita
draws nothing when I use my Wacom, but does draw if I replay either one
of the recordings.
It seems that there is a larger bug lurking about and the patch only
makes it more/less apparent.
As far as warping goes, the only time
I don't have any device recordings that show this behavior. Can someone
who sees the issue please record the device and attach the files here.
Instructions can be found at:
https://wiki.ubuntu.com/Multitouch/Testing/uTouchEvEmu#Debugging.
Thanks!
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** Attachment added: lenovo x201T props
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/799202/+attachment/2364140/+files/lenovox201.props
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** Attachment added: Lenovo x201T record
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/799202/+attachment/2364141/+files/lenovox201.record
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I attached 3 files, with 2 recordings in case it can help. First one is
with the bug, second one without the bug (patched xserver-xorg-core):
* lenovo X201t props is the result from evemu-describe,
* lenovo X201t record is the result from evemu-record (see #1)
* lenovo X201t patched record is
I don't know if it is of any interest, but I tried to replay the 2
record files that I just attached to this bug report with evmu-play.
When using the official xserver-xorg-core, nothing is drawn in Krita. I
can see the cursor move but nothing is drawn with both recordings (the
buggy and the
I investigated a bit and reverting the fix for issue #774938 (1) fixes the
problem and my touch / stylus work correctly.
So the regression is introduced by the following patch
503_fix_masked_transformed_valuators.patch
Using a Lenovo X201T with Wacom touchscreen. Let me know if I can help
in
Ok. I just tried and
This bug is NOT FIXED in Oneiric.
I have pressure sensitivity, but I still get the jumps and ghost lines.
It's a completely fresh and updated install. Vanilla in all other ways,
using latest compiled Krita from master.
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I confirm this IS NOT FIXED.
And I can add that Graphire4 tablet doesn't draw anything on canvas in Krita as
klerfayt noticed in comment #12,
while Intuos3 can paint with pressure but with jumping ghost lines like
shavedwookie describes.
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Has anyone tried? If so, do we know if it will be backported to Natty?
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Title:
wacom stylus jumps with latest xserver-xorg-core
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This bug has probably been fixed in oneiric, see #806256
(2:1.10.2.902-1ubuntu2).
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Title:
wacom stylus jumps with latest xserver-xorg-core
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When will there be an updated package for oneiric? I have the problem of
cursor movement to 0/0 when using the PAD device of Intuos4.
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I also tested, and installing the 0.11 version of xserver-xorg-input-
wacom did not change anything for me.
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Title:
wacom stylus jumps with
@ j-b-m, by not change anything you mean you can draw in Krita?
Strange that we get different results then. I got Intuos4 medium, the
same model as you (if I understood everything correctly here).
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I tested your package (xserver-xorg-core), but it doesn't change
anything, sorry. I see no difference with the official
2:1.10.1-1ubuntu1.1 version.
sudo dpkg -s xserver-xorg-core reports:
Package: xserver-xorg-core
Status: install ok installed
Priority: optional
Section: x11
Installed-Size:
I do see a difference: now pressing on expresskey won't jump the mouse
cursor to the upper left corner. This fixes bug #560180
However Krita is still unusable with odd diagonal lines appearing from
(or to) upper left corner of the screen.
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Yes, I can see the unwanted lines when playing back the record. I attach
the recording in case it can be useful
** Attachment added: device.record
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/799202/+attachment/2179613/+files/device.record
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I mean that I can see the lines when playing the record from bug 762938,
and attached in my previous comment is another recording from me that
also shows the lines on playback, here is also my device.prop.
** Attachment added: device.prop
I was working off of the recording attached in bug 762938. I saw the
button presses that warped the pointer to 0/0 and hoped that fixing that
would help. Do you see the spurious lines if you play back the
recording? If not, can you create a new recording? Instructions can be
found at
I saw the button presses that warped the pointer to 0/0 and hoped that
fixing that would help.
Oh, I see ;-)
You didn't tell not to press buttons while moving the stylus! The
recording for bug 762938 probably only contains buttons presses that I
myself pressed frantically, I think I even used
klerfayt,
Actually, I'm glad you played with all the input knobs on the tablet so
I would know if anything was broken :).
I think I realized why I wasn't seeing the issue on my natty development
machine. I had installed a newer version of xserver-xorg-input-wacom,
and it behaves differently.
With xserver-xorg-input-wacom_0.11.0-0ubuntu1_amd64.deb nothing is drawn on the
canvas no matter how hard stylus is pressed.
Preview in edit brush settings does work, but has same old diagonal lines
problem.
Intuos4 in Mypaint works without any problems.
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I believe I found the cause of this regression. The wacom tablet
sometimes sends button presses on one of the X devices that does not
emit (or has not emitted yet) traditional X and Y coordinates. This
confuses the server due to masked valuators and coordinate
transformation. The fix is to not
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Title:
wacom stylus jumps with latest xserver-xorg-core
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the screenshot link seems to be broken?
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** Description changed:
Wacom input jumps while drawing with xserver-xorg-core version
2:1.10.1-1ubuntu1.1
It is working correctly with version 2:1.10.1-1ubuntu1.
This issue is somehow related to issue #762938 (no pressure sensitivity
with wacom tablet).
A fix for pressure
I attached the image to the bug report, since I cannot find a way to
link it correctly
** Attachment added: Jumping cursor
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/799202/+attachment/2174502/+files/pressure_bug.png
** Description changed:
Wacom input jumps while drawing
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