[SOLVED] Slow cursor follow in Qt 5.2.2 (git) on freescale i.MX6 with tslib



  • Hi all, using qt 5.2.2 (release branch from git, but I noticed the same issue with 5.2.1) on I.MX6 it is impossible to flick on qml elements because the cursor does not "follow" the finger on touchscreen...
    I am using tslib library because my touchscreen does not support evdev (it is resistive?).
    The strange issue is that with non-qml application (fingerpatin example) or using tslib test application (ts_test) on device the cursor follow the finger at higher speed.
    Is this a libqtslibplugin.so or a qml issue?
    I generated the plugin without any option, only qmake, make and make install...


  • Lifetime Qt Champion

    Hi,

    Since it's a bit low-level, I'd avise to post this question on the "interest mailing list":http://lists.qt-project.org/mailman/listinfo/interest you'll find there Qt's developers/maintainers (this forum is more user oriented)



  • Thank you SGaist, I already send a mail!
    I used this forum as first tier, in order to find simple answer in a fast way...
    Do you advise me to post the answer in this thread?



  • I solved the issue setting the maximum CPU frequency for my board with the command:

    @ echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor@

    Forgive me for this spam topic, reading the board documentation it was written that the maximum cpu frequency was the default value, but it isn't...


  • Lifetime Qt Champion

    Don't excuse yourself for reading the documentation ;)

    Thanks for sharing the solution, that might help other


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