Well, something weird happened with my Ubuntu Studio installation and I was getting weird scheduling errors, so I tried Debian, but ran into the known issue with libc, so switched over to Linux Mint for now, even though that’s running on an older Ubuntu base (Trusty).
Hmm… well, whilst Linux Mint runs really well, and hibernate works perfectly, it doesn’t seem to play Steam games very well — severe graphics corruption, although Second Life seems to be fine.
I’ll try Debian again, then drop back to Ubuntu again if all else fails.