[Interest] Touch frozen in Qt 5.15.9

[Poonam Sangale]

Hi Axel,

Our device is imx6 with protocol B multi touch screen and mtdev enabled in
yocto configuration.
Can you please let me know if the patch mentioned in
https://bugreports.qt.io/browse/QTBUG-86013 is relevant and can be applied
to Qt 5.15
since it is incorporated only in Qt6?

Have you ever experienced touch not responding on an imx6 device with above
configuration at times when a button is clicked in Qt Quick application ?

Appreciate your feedback in this regard.


Thank you,

Poonam

On Wed, Feb 21, 2024 at 2:53 PM Axel Spoerl via Interest <
interest at qt-project.org> wrote:

> Hi Poonam,
>
> The issue I mentioned is not fixed in 5.15. Touch improvements made in Qt
> 6 can’t be pinned to a single patch.
>
> Sorry for not providing better news.
>
> Cheers
> Axel
>
> On 19 Feb 2024, at 12:34, Poonam Sangale <sanglepoonam123 at gmail.com>
> wrote:
>
> 
>
> Sie erhalten nicht oft eine E-Mail von sanglepoonam123 at gmail.com. Erfahren
> Sie, warum dies wichtig ist
> <https://aka.ms/LearnAboutSenderIdentification>
>
> Hi Axel,
>
> Thank you for your response. Are touch-related issues fixed in the latest
> Qt 5.15.16?
>
> Can you share the patch for 5.15.9 to fix touch related issues?
>
> Regards, Poonam
>
> On Mon, Feb 19, 2024 at 4:36 PM Axel Spoerl via Interest <
> interest at qt-project.org> wrote:
>
>> Hi,
>>
>> 5.15.9 is quite outdated (current is 5.15.16).
>> A number of known touch-related issues have been fixed with
>> https://codereview.qt-project.org/c/qt/qtbase/+/516578, included in 6.7.
>> Touch handling has been seen major improvements in Qt 6.
>> If the issue persists with a more recent Qt Version (I'd recommend 6.5),
>> please file a bug report with a precise description and a minimal,
>> compilable reproducer.
>>
>> Regards,
>> Axel
>>
>> ------------------------------
>> *Von:* Interest <interest-bounces at qt-project.org> im Auftrag von Poonam
>> Sangale <sanglepoonam123 at gmail.com>
>> *Gesendet:* Montag, 19. Februar 2024 11:12
>> *An:* interest at qt-project.org <interest at qt-project.org>
>> *Betreff:* [Interest] Touch frozen in Qt 5.15.9
>>
>> Hi,
>>
>> We are using Qt 5.15.9 commercial license with Yocto Dunfell
>> configuration using evdev touch plugin on IMX6 based device.
>> Here are the exported environment variables being used:
>> export QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=/dev/input/event0
>> export QT_QPA_PLATFORM = eglfs
>>
>>
>>
>> However, touch/UI freeze issues are being seen intermittently.
>>
>>
>>
>> Any recommendations on the environment variables if required to use
>> export QT_QPA_EVDEV_TOUCHSCREEN_INPUT=/dev/input/event0 instead or any
>> known issues in Qt 5.15.9?
>>
>>
>> Regards,
>>
>> Poonam
>> _______________________________________________
>> Interest mailing list
>> Interest at qt-project.org
>> https://lists.qt-project.org/listinfo/interest
>>
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