Combobox no dropdown under Debian

sgbdev

Hi @all,
in a project of mine, I use a combobox where items are displayed from a databank.
Under Windows in simulation the dropdown menu is shown as wanted when I click it:
== >

When I run the same program under Debian 12 (bookworm), detailed infos from Linux-terminal below:

pi@RevPi136238:~$ cat /etc/os-release 
PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
NAME="Debian GNU/Linux"
VERSION_ID="12"
VERSION="12 (bookworm)"
VERSION_CODENAME=bookworm
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

I get this behaviour:
==>

To be independent from any faulty settings I might have set in QtDesigner, I have then tried this example from: https://www.pythonguis.com/docs/qcombobox/
with this code:

from PySide6.QtWidgets import QComboBox, QMainWindow, QApplication, QWidget, QVBoxLayout
from PySide6.QtGui import QIcon
import sys


class MainWindow(QMainWindow):

    def __init__(self):
        super().__init__()

        combobox1 = QComboBox()
        combobox1.addItem('One')
        combobox1.addItem('Two')
        combobox1.addItem('Three')
        combobox1.addItem('Four')

        combobox2 = QComboBox()
        combobox2.addItems(['One', 'Two', 'Three', 'Four'])

        combobox3 = QComboBox()
        combobox3.addItems(['One', 'Two', 'Three', 'Four'])
        combobox3.insertItem(2, 'Hello!')

        combobox4 = QComboBox()
        combobox4.addItems(['One', 'Two', 'Three', 'Four'])
        combobox4.insertItems(2, ['Hello!', 'again'])

        combobox5 = QComboBox()
        icon_penguin = QIcon('animal-penguin.png')
        icon_monkey = QIcon('animal-monkey.png')
        icon_bauble = QIcon('bauble.png')
        combobox5.addItem(icon_penguin, 'Linux')
        combobox5.addItem(icon_monkey, 'Monkeyix')
        combobox5.insertItem(1, icon_bauble, 'Baublix')

        layout = QVBoxLayout()
        layout.addWidget(combobox1)
        layout.addWidget(combobox2)
        layout.addWidget(combobox3)
        layout.addWidget(combobox4)
        layout.addWidget(combobox5)

        container = QWidget()
        container.setLayout(layout)

        self.setCentralWidget(container)

    def current_text_changed(self, s):
        print("Current text: ", s)


app = QApplication(sys.argv)
w = MainWindow()
w.show()
app.exec()

which is also not showing its popup-entries on click, but appears in the same way, under Debian:
== >

An update to the latest pyside6-version did not do the trick!
Any ideas how to get this to work?

Thanks in advance

SGaist

Hi and welcome to devnet,

Are you using the Qt version that comes with your distribution ?
Which window manager are you using ?

sgbdev

Thank you for the warm welcome!
I use this QT-version:

Name: PySide6
Version: 6.7.2
Summary: Python bindings for the Qt cross-platform application and UI framework
Home-page: 
Author: 
Author-email: Qt for Python Team <pyside@qt-project.org>
License: LGPL
Location: /home/pi/.local/lib/python3.11/site-packages
Requires: PySide6-Addons, PySide6-Essentials, shiboken6
Required-by: