Comment 35 for bug 1318477

Using upstream kernel, a random resume did occur BUT not after 24 hours - after significantly less time (19h 30m).
The only thing interesting about the time at which it resumed is it happened to coincide with aGoogle Calendar reminder firing off in Chrome, which was open on the suspended machine. Not sure if coincidental or not.

I will update the BIOS today and first try with stock Ubuntu kernel. Marking not-incomplete for now since there's a bunch more information in here as requested.