Created a sample widget application using Qt Creator. Configured the kit appropriately so that the code gets cross compiled successfully. After that when user tries to run the code on the target, the application can be seen on the display device connected to the embedded board.

The real issue starts when user tries to debug the application. Lets say a break point is added in the code and press F5. Now debugging happens and when allowed to continue further, the application gets deployed on the target. User can see 2 instances of process. Here I have used qtwidget as the application and below is the snapshot of ps command on the target:

 1379 root      5088 S    sshd: root@notty
 1387 root      2980 S    sh -c test -f /etc/profile && . /etc/profile;test -f $HOME/.profile && . $HOME/.profile; DISPLAY=':0.0' gdbserver --multi :10000
 1391 root      2248 S    gdbserver --multi :10000
 1394 root      236m S    /home/root/qtwidget
 1399 root      236m t    /home/root/qtwidget
 1400 root      3004 R    ps
root@mx6q:~# 

If I kill process 1399 the application gets displayed on the device. It would be nice if we can find the root cause for the issue.

The target where the application runs is on Linux. The application is also built on Linux. Let me know if more information is required.