Why my touch screen can not work?

Leo leo20090916 at gmail.com
Wed Nov 17 17:42:32 PST 2010


Sorry, forgot my attachment!

2010/11/18 Leo <leo20090916 at gmail.com>

> Dear Peter:
>     I attach my evtest&&xev log.  it seems to work ok.
> But there's something intersting, I just repeat operation on the different
> place of touch screen.
> Evtest can distinguish the position, you can have a look at the log, the
> ABS coordinate keep changing,
> While XEV I run on my device, this test seems not as what we want,  it can
> distinguish the BTN_PRESS && BTN_RELEASE or
> motion, but the position never changed.
>
>    I guess there's some place to transform the event as user want in Xorg.
> evtest may read from the /dev/input/event3 directly, it's ok. But XEV Which
> may depends on X11's transformation, so appears the different situation.
>
>     Please give some hints, thanks [?]
>
> BTW: I can not open the LINK [?]
>
> http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html
> Is there any other website ?
>
>
>
>
> 2010/11/18 Peter Hutterer <peter.hutterer at who-t.net>
>
> On Wed, Nov 17, 2010 at 09:34:49AM +0800, Leo wrote:
>> > I prepare to port Meego(Linux based) to my devkit8000, follow the
>> porting
>> > guide
>> > http://wiki.meego.com/ARM/Meego_on_B...d_from_scratch<
>> http://wiki.meego.com/ARM/Meego_on_Beagleboard_from_scratch>
>> > everything seems ok: show the home screen, launch the application,
>> > But there's problem about touch screen. Meego can not recognize my
>> behavior.
>> > I'm not sure it's related with Xorg or driver. Here is my Xorg log:
>> >
>> > 59.837] (II) config/udev: Adding input device ADS7846 Touchscreen
>> (/dev/i)
>> > [ 59.837] (**) ADS7846 Touchscreen: Applying InputClass "default"
>> > [ 59.841] (**) ADS7846 Touchscreen: Applying InputClass "evdev
>> touchscreen "
>> > [ 59.842] (**) ADS7846 Touchscreen: always reports core events
>> > [ 59.842] (**) ADS7846 Touchscreen: Device: "/dev/input/event3"
>> > [ 59.842] (--) ADS7846 Touchscreen: Found absolute axes
>> > [ 59.842] (--) ADS7846 Touchscreen: Found x and y absolute axes
>> > [ 59.842] (--) ADS7846 Touchscreen: Found absolute touchscreen
>> > [ 59.843] (II) ADS7846 Touchscreen: Configuring as touchscreen
>> > [ 59.843] (**) ADS7846 Touchscreen: YAxisMapping: buttons 4 and 5
>> > [ 59.843] (**) ADS7846 Touchscreen: EmulateWheelButton: 4,
>> EmulateWheelIner0
>> > [ 59.845] (II) XINPUT: Adding extended input device "ADS7846
>> Touchscreen" ()
>> > [ 59.851] (II) ADS7846 Touchscreen: initialized for absolute axes.
>> > [ 59.854] (II) config/udev: Adding input device ADS7846 Touchscreen
>> (/dev/i)
>> > [ 59.854] (**) ADS7846 Touchscreen: Applying InputClass "default"
>> > [ 59.855] (**) ADS7846 Touchscreen: always reports core events
>> > [ 59.855] (**) ADS7846 Touchscreen: Device: "/dev/input/mouse0"
>> > [ 59.855] (EE) ioctl EVIOCGNAME failed: Inappropriate ioctl for device
>> > [ 59.856] (II) UnloadModule: "evdev"
>> > [ 59.856] (EE) PreInit returned NULL for "ADS7846 Touchscreen"
>> > [ 60.102] (NI) OMAPFBSaveScreen: Dim backlight?
>> >
>> > who has the experience about these kind of problem, pls talk to me!
>> > thanks very much
>>
>> does it work at all? do you see events come out of the device when you run
>> evtest against it?
>>
>> as for the error message:
>> http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html
>>
>> Cheers,
>>   Peter
>>
>
>
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