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  1. Bug #1318477
  2. Comment #0

Comment 0 for bug 1318477

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Dan Poler (l-dan) wrote : XPS 15 9530 wakes from sleep after exactly 24 hours + 3-5 seconds

This "feels" related to https://bugs.launchpad.net/dell-sputnik/+bug/1161962 but there are some differences making me think that a new bug is warranted - the aforementioned link relates to Saucy on an XPS 13; my instance is Trusty on an XPS 15. The aforementioned link indicates a wait of about 40 minutes to resume; this one occurs after 24 hours + 3-5 seconds.

System is an XPS 15 9530, 16 GB RAM, 512 GB SSD. Trusty, fresh install from scratch (not an upgrade over Saucy).

Symptoms: The system will wake itself from sleep after very nearly exactly 24 hours, + / - 10 seconds or so. /var/log/pm-suspend.log will show this:

[...]
Sat May 10 22:08:49 MDT 2014: performing suspend
Sun May 11 22:08:54 MDT 2014: Awake.
[..]

In this case the system has resumed after 24 hours and 5 seconds with no user request to do so.

Steps to reproduce: Suspend machine by closing lid. The system can be plugged in to charge while it is suspended, and then subsequently unplugged, but the suspend occurs on battery power, and when the resume occurs the system is also not plugged in. I have not tested other permutations. No other action is necessary. The system will randomly resume 24 hours + 3-5 seconds later.

Observed behavior: As noted above
Desired behavior: The system does not resume until the lid is opened.

Other notes: I have observed this occurring with the laptop in a sleeve while on an airplane, which is concerning.