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. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318477 Title: [Dell XPS 15 9530] Wakes from sleep after exactly 24 hours + 3-5 seconds To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1318477/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs