Skype is crashing my entire X server, and the bug I reported (since fixed) is no longer relevant, nor useful. I've found an alternate client, but now someone wants to use rooms (and it's imperative), so I need to get this fixed. What should I do to trace where the crash is coming from? It crashes the Xserver, so basically, I'm at a loss.
The relevant component you need to trace is X, not the application causing the crash.
There is some detailed information at the Ubuntu wiki: https://wiki.ubuntu.com/X/Backtracing
I had the same problem where Skype, Spotify, Qbittorrent, and Glogg would crash the X server.
Then I found this solution.
Now log out and log back in.