https://stackoverflow.com/questions/47972967/how-do-i-add-fit-and-position-dynamically-generated-qgroupbox-on-a-screen

main.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import sys

from PySide.QtCore import *
from PySide.QtGui  import *


class Viewport(QWidget):
    def __init__(self, parent=None):
        super(Viewport, self).__init__(parent)
        self.parent = parent
        pal = self.palette()
        pal.setColor(QPalette.Background, Qt.white)
        self.setAutoFillBackground(True)
        self.setPalette(pal)

        self.box = QGroupBox(self)
        self.box.setTitle("Speaker 1")       # THIS BREAKS IT
        self.box.setObjectName("speaker1")
        self.box.setGeometry(12, 12, 200, 200)

class UI(QDialog):
    def __init__(self, width, height, parent=None):
        super(UI, self).__init__(parent)
        self.parent  = parent
        self.width   = width
        self.height  = height
        self.view = Viewport(self)
        lay = QVBoxLayout(self)
        lay.setContentsMargins(21, 21, 21, 21)
        lay.addWidget(self.view)
        self.setLayout(lay)
        self.setWindowFlags(Qt.FramelessWindowHint)
        self.showFullScreen()


app = QApplication(sys.argv)
app.setStyle("fusion")
screen_resolution = app.desktop().screenGeometry()
width, height = screen_resolution.width(), screen_resolution.height()
ui = UI(width, height)
ui.show()
sys.exit(app.exec_())