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Cura 2.4.0 hangs forever before main window opens (Arch Linux)

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Cura 2.4.0 hangs at startup before main window appears. This produces this log: Cura hangs. In this case the PC is connected via wired LAN to a 192.168.9.x/20 network and some USB/RS232 converters are connected. In another environment with different network setup (WLAN, 192.168.1.x/24) on the same PC Cura comes up and displays a main window. The corresponding log is here: Cura comes up (and gets closed by user).

The similar problem with Cura 2.4.0 beta is described here: similar case with Cura 2.4.0 beta (but not with a running case).

Any ideas?

Kind regards


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