[Interest] Touch frozen in Qt 5.15.9

Axel Spoerl axel.spoerl at qt.io
Mon Feb 19 12:05:10 CET 2024


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5.15.9 is quite outdated (current is 5.15.16).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
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