Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

On 09/09/2010 08:25 AM, Rafi wrote:
> Considering this is a possibly
> unknown model, please post the contents of the rdesc nodes
> (/sys/kernel/debug/hid/*:1B96:*/rdesc).   Wasn't that supposed to be collected
> when you created the bug?  

That's the part of the ID for N-trig devices, yes? We can't add an
apport hook for this until we have a general solution for all devices
that we can use.

> In addition to evtest, be prepared to collect some
> samples from usbmon, so that we can confirm the thing is consistent with the
> older devices.

Rafi, is there a way to perform this and the task above in the general
case (so that apport hooks can push the info up to LP)?

In fact... I've just created a ticket for this.

Original context: bug #626769
Bug for this task: bug #635112

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

I have marked this ticket as invalid, since all that was required was to
run the calibration tool.

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

On 09/09/2010 08:25 AM, Rafi wrote:
> Considering this is a possibly
> unknown model, please post the contents of the rdesc nodes
> (/sys/kernel/debug/hid/*:1B96:*/rdesc).   Wasn't that supposed to be collected
> when you created the bug?  

That's the part of the ID for N-trig devices, yes? We can't add an
apport hook for this until we have a general solution for all devices
that we can use.

> In addition to evtest, be prepared to collect some
> samples from usbmon, so that we can confirm the thing is consistent with the
> older devices.

Rafi, is there a way to perform this and the task above in the general
case (so that apport hooks can push the info up to LP)?

In fact... I've just created a ticket for this.

Original context: bug #626769
Bug for this task: bug #635112

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

On 09/09/2010 03:00 PM, Rafi Rubin wrote:
> On 09/09/10 16:00, Duncan McGreggor wrote:
>> On 09/09/2010 08:25 AM, Rafi Rubin wrote:
> 
>>> Also sorry if I missed it, but what firmware version is installed on
>>> your machine?
> 
>> 4.7.17.20.7
> 
> Good to know.  Are you getting more than four contacts from that device?

I thought I was, but once I got over 4 fingers onthe screen, it was
really just touchpoints bouncing from one finger to the next.

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

On 09/09/2010 08:39 PM, Rafi wrote:
> In reviewing links, I discovered a typo, the ntrig calibration tool
> is at:
> 
> lp:~utouch-team/utouch/ntrig-calibrator
> 
> The link in the wiki is correct.
> 

Whoop! Thanks Rafi!

d

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Rafi]

In reviewing links, I discovered a typo, the ntrig calibration tool is
at:

lp:~utouch-team/utouch/ntrig-calibrator

The link in the wiki is correct.

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Mohamed IKBEL Boulabiar]

>
> > Calibration should take less than 1 minute to run.
>
> Fantastic. For those that want to do calibration in the future, I've put
> together a small how-to on the wiki:
>  https://wiki.ubuntu.com/Multitouch/Calibration/Ntrig


Very nice !


 > Also sorry if I missed it, but what firmware version is installed on
> > your machine?
>
> 4.7.17.20.7
>

This seems the newest ntrig firmware up to now !

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

On 09/09/2010 08:25 AM, Rafi Rubin wrote:
> bzr branch lp:~rafi-seas/+junk/ntrig_calib

Rafi, this has been moved here:
 lp:~utouch-team/utouch/ntrig-calibration

Could you please do further development against the team branch, and not
one stored in your junk folder? Thanks ;-) I've merged your latest
there, btw. Also, this was announced as the official location for this
tool on the public mail list... don't want folks missing out an all your
latest and greatest changes!

> Calibration should take less than 1 minute to run.

Fantastic. For those that want to do calibration in the future, I've put
together a small how-to on the wiki:
  https://wiki.ubuntu.com/Multitouch/Calibration/Ntrig

> If it doesn't
> improve the first time,

It did! All the dead spots are gone when I test with mtview!! It's like
having a whole new device. Thanks!

> As Henrik says, some traces might be helpful.

Yup, provided that.

> Also sorry if I missed it, but what firmware version is installed on
> your machine?

4.7.17.20.7

Thanks again!

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

This file contains an downward stroke (2 touch points) across the touch
screen of the T410s, from the top-right to the lower-left.

** Attachment added: "evtest-capture-diagonal.down.xml"
   
https://bugs.edge.launchpad.net/utouch-grail/+bug/626769/+attachment/1561996/+files/evtest-capture-diagonal.down.xml

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

This file contains an upward stroke across the touch screen of the
T410s, from the bottom left to the upper-right.

** Attachment added: "evtest-capture-diagonal-up.xml"
   
https://bugs.edge.launchpad.net/utouch-grail/+bug/626769/+attachment/1561994/+files/evtest-capture-diagonal-up.xml

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Rafi]

bzr branch lp:~rafi-seas/+junk/ntrig_calib

Calibration should take less than 1 minute to run.  If it doesn't improve the
first time, try once or twice more.  If that still sucks, the windows ntrig
control panel has another calibration routine that actually gives a bit of
feedback (I don't really have a large enough sample space to decode the output
reliably).  And if that says all is good and it still sucks, look for firmware
updates and complain to the manufacturers ;)

As Henrik says, some traces might be helpful.  Considering this is a possibly
unknown model, please post the contents of the rdesc nodes
(/sys/kernel/debug/hid/*:1B96:*/rdesc).   Wasn't that supposed to be collected
when you created the bug?  In addition to evtest, be prepared to collect some
samples from usbmon, so that we can confirm the thing is consistent with the
older devices.

Also sorry if I missed it, but what firmware version is installed on
your machine?

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Henrik Rydberg]

Duncan, if (after updates) you are still experiencing the funky
behaviors, I can recommend running evtest-capture (installed in ubuntu),
and posting the resulting xml file here.

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

Ikbel,

As Henrik mentioned, this ticket really has to do with the insensitivity
of the Lenovo screen, especially in the center. This video shows the
problems with getting touches accepted, and also highlights the
positioning issue (which should really be in a bug of it's own). Also,
if you are having problems with the tx2, please file a separate bug --
this bug is for the Lenovo.

Ikbel -- thanks for the pointer about the calibration. I'm hoping to get
a chance to try that tomorrow.

Thanks Ikbel and Henrik for taking a look!

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Henrik Rydberg]

Ikbel, the placement of the touches is not the problem here - it depends
on the size of the window, of course. The problem is that touches are
not registered properly. Since you have the HP TX2, it would be
immensely helpful to see a similar view of your hardware, both with the
stock ntrig driver and the experimental one found at "wget
http://bitmath.org/code/hid-ntrig-dkms/hid-ntrig-
dkms_1.0.2~test2_all.deb". Reports of any difference in behavior would
be greatly appreciated. Thanks.

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Mohamed IKBEL Boulabiar]

I watched the video. I understand more now.
it looks a small mapping problem in mtview rather than something in
the ntrig driver/fw !

The mtview supposes the window in fullscreen and doesn't detect if the
window is placed somewhere in the screen.

For unity, you have the bar on the Left which takes ~100px.
The topbar is also counted.
it's a small problem of mapping raw hw input to the output.

Duncan, try running the Gnome DE and you'll probably see that you'll
no more have the problem of unity pixels (misplaced pixels in right).


i


On Wed, Sep 8, 2010 at 9:54 PM, Duncan McGreggor  wrote:
> Here's the movie I had mentioned.
>
> ** Attachment added: "movie of mtview showing issues with Lenovo T410s"
>   
> https://bugs.edge.launchpad.net/utouch-grail/+bug/626769/+attachment/1558055/+files/20100908_001.mp4
>
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> You received this bug notification because you are a member of uTouch
> Team, which is subscribed to utouch-grail.
>

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

Here's the movie I had mentioned.

** Attachment added: "movie of mtview showing issues with Lenovo T410s"
   
https://bugs.edge.launchpad.net/utouch-grail/+bug/626769/+attachment/1558055/+files/20100908_001.mp4

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

I will attach a movie showing the sorts of problems I'm experiencing.
Note that not only do I have a very hard time getting a touch response,
but the touches are coordinate-shifted.

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Mohamed IKBEL Boulabiar]

I'll test several times to see if any problem occurs.
But I haven't noticed this problem before (I still have no problems
with the hp tx2).

Can you post some mtview screenshots to see how it exactly occurs on the
T410s ?

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Henrik Rydberg]

The problem comes and goes, so testing at several occasions might be a
good idea. Are you saying the HP TX2 works reliably, and you have no
problems with it?

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Mohamed IKBEL Boulabiar]

is this problem only found in the T410s ?
I tested on my hp tx2 and I haven't figured any problem or ghost contacts.

Why we lose ntrig as a mt driver just for one hardware failure case ?

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Henrik Rydberg]

One major grief with the ntrig devices is the poor filtering of ghost
contacts. The ghosts fall on random combinations of X and Y from the
real contacts (x_i, y_i), such that (x_i, y_j) may become a contact for
arbitrary i != j. Running the mtview program (git clone
http://bitmath.org/git/mtview.git, cd mtview, make, ./bin/mtview
) and putting two fingers diagonally on the canvas reveals the
problem very clearly. It would be great with a confirmation that this
problem persists on the T410s.

As a drastic possibility, it could be possible to convert the ntrig to a
non-mt driver, just reporting one position and concentrating on counting
the number of fingers properly. With such a solution, one loses the
pinch-to-zoom and rotate, but multi-finger tapping and dragging could
still work.

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Henrik Rydberg]

** Changed in: utouch-grail (Ubuntu)
 Assignee: (unassigned) => Henrik Rydberg (rydberg)

** Changed in: utouch-grail
   Status: New => Incomplete

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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Ara Pulido]

Marking as Incomplete, waiting for Duncan's answer

** Changed in: utouch-grail (Ubuntu)
   Status: New => Incomplete

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Re: [Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Mohamed IKBEL Boulabiar]

Does a normal calibration resolves the problem ?
http://www.freedesktop.org/wiki/Software/xinput_calibrator


i

On Mon, Aug 30, 2010 at 3:17 PM, Duncan McGreggor 
wrote:

> ** Also affects: utouch-grail (Ubuntu)
>   Importance: Undecided
>Status: New
>
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[Bug 626769] Re: Work around possible touch hardware issues in Lenovo T410s

[Duncan McGreggor]

** Also affects: utouch-grail (Ubuntu)
   Importance: Undecided
   Status: New

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