I have downloaded and installed the Signal for Desktop app via the Ubuntu Software Center. The current version running on my laptop is v1.40.1. (Update: The new version v5.0.0 also does not work.)
When someone tries to call me via Signal, my phone is ringing and my laptop notifies me as well with a ringing sound that someone is trying to call me. I can then decide whether I want to accept the call on my phone or laptop. If I accept it on my phone, everything just works fine. But if I try to accept it on my laptop, I can still hear the ringing sound and the desktop app on my laptop has crashed. The same is true if I try to call someone from my laptop.
A friend of mine does not have any problems with the Signal desktop app because he uses a MacBook. So, on Apple devices, everything seems to work just fine but this is not the case for desktop computers running Linux, I suppose.
Is there a bug in Signal’s desktop app for Linux or might some faulty Ubuntu preferences cause the crash? Does anyone know more about this issue?
Maybe I can provide a debug log and crash report if someone here can tell me what to look out for in such a case.
Maybe you can try downloading Signal's Desktop app from here!
It is the official website of Signal.