Yes it requires root on Android (look here) probably it's the same problem, and yes you don't have to be root on Linux, if you have access rights to serial device as normal user.
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Solved License issue
• mbnoimi -
Unsolved HTTP request POST in QT application QT 5.3.2
• trex -
Unsolved Qt Location Open Street Map Plugin
• NickV -
Unsolved Image size issue on Android
• dheerendra -
Unsolved QtCreator can not detect AVD version
• vlada -
Unsolved Qt for Android building problem!
• Davekawk -
Unsolved qml GUI not scaling
• DivyaMuthyala