Qt Application hang up in a qt_safe_read function

[maher_electronic]

Hello,

My simple Qt Widgets Application hangs always on a qt_safe_read.
I run my application and when it hangs I pause the debug and it always stops in a qt_safe_read function (see attached picture ).

Thanks.

[jsulm]

@maher_electronic Please post the stack trace.

[maher_electronic]

I have the screenshot of another application that also hangs at the same point and where the stack window is displayed.

I forgot to say before that the application works fine for Desktop. These problems only occur when the applications run on a Beaglebone Black with Angstrom.

[jsulm]

@maher_electronic Do you have this issue with minimal Qt widget application also (from "New File or Project...)?

[maher_electronic]

Hello @jsulm

As you told me I have created a new Qt Widget Application with no widgets (only a QMainWindow). I have tested for 1 hour and no blockage has been detected.
I need to try it for longer, but the other applications had this issue about 2-3 minutes after starting them.

Thanks.

[SGaist]

Hi,

Is the hanging application a Qt 4 application built for embedded and running on the target ?

From the looks of it, there's something fishy going on with the TTY. What is your device doing ?

[maher_electronic]

Hello,

Yes, this application is a Qt4 application built for Beaglebone Black with Angstrom. The application is compiled on my Desktop with a qt cross-compiler for Angstrom and is deployed on the target.

The application is very simple. It only contains 3 buttons and 1 label. It does not write or read from any file (see attached pictures).

Thanks.