Bug? - Plugging into HDMI TV disables/reconfigures audio - Ubuntu 15.1

[doreato]

I did this a little while ago, and had to reinstall to fix. But I lost my audio and the only thing I remember doing before I lost it was watching a movie by plugging my XPS via mini displayport into a HDMI TV. It seemed to have completely got rid of all audio output sources and set HDMI to default. I tried desperately to get audio back and ultimately decided to just do a clean reinstall. This fixed the issue.

Ways to reproduce:

1. Clean install Ubuntu 15.1
2. Play audio through HDMI
3. Lose access to laptop speakers?

*I'm not 100% sure what actually lost it, but I know all I did was install GTK themes, some icons and installed drivers and upgraded/updated everything. Either this is a bug, or screwed up something I didn't realize. Regardless I use my laptop for Uni and watching Rick and Morty so I can't risk having to reinstall again at this time to test it. I would love if someone could confirm or deny this bug.

[mattia-b89]

I don't know if this can help but I'm on Winz10 and since two weeks I get a similar problem:
if I connect my external monitor (with integrated speakers) via miniDP <-> HDMI and then I disconnect it, Winz doesn't recognize any sound card or speaker and I have to reboot the entire system to get this issue fixed.
In the past (I can say during the last year 2015) I've never had any sort of problem related