[Development] Multiple Windows Dead-Lock Observed on QNX with Qt-5.3.2

Prashant Purohit prashantpurohit025 at gmail.com
Wed Jun 15 19:41:24 CEST 2016

Hi all,

I am new to QT and using QT with QNX.
I am using two different windows in my application (It is not possible
for me to use single window).

When I switch from one window to another window, My screen is not
responding due to deadlock. Though there is no crash observed.

My situation is similar to bug
(https://bugreports.qt.io/browse/QTBUG-47553) which is already

By referencing above bug, when I set QSG_RENDER_LOOP=basic, the dead
lock condition is prevented but then the animation which is being
shown after every button press is not smooth anymore.

Is there any better solution for above problem?
If QSG_RENDER_LOOP=basic is the only solution then what I need to do
to make the animation (sequencialAnimation on every button press)
smooth as it was before setting the QSG_RENDER_LOOP environment

Also is there any alternative which I can use in my code other than
setting QSG_RENDER_LOOP environment variable?


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