Duckduckgoing 'network manager static ip' really came up with a variety of reports. But a good number of explanations how this is supposed to work as well, in the top.
I'm sure you tried a couple things before you decided that it's just not working the way you like it, but for me it seems that static IPs, your way, should be no problem [1,2,3] with the on-board tools.
Sound: Never had that (or any related) issue since I stopped running weird apps under wine and I light a candle for Lennart every other day for a sound solution that just works in my world, whatever I throw at it.
Yes, I've been down that route with setting things in network manager config and had them wiped out when doing Ubuntu updates.
The real problem here is that if you set multiple static IPs in NM GUI it will lie to you and tell you that it has done it when it hasn't. This is pretty dire UX.
The audio issues with spotify were from running the native Linux client, oddly the volume control in the Windows/Wine version works fine with alsa (although a recent update to spotify seems to have broken wine compatibility almost entirely).
The real problem here is that if you set multiple static IPs in NM GUI it will lie to you and tell you that it has done it when it hasn't. This is pretty dire UX.
The audio issues with spotify were from running the native Linux client, oddly the volume control in the Windows/Wine version works fine with alsa (although a recent update to spotify seems to have broken wine compatibility almost entirely).