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Message #131569
[Bug 1537668] Re: upower charge history doesn't update when device resumes from suspend
** Changed in: canonical-devices-system-image
Status: New => Confirmed
** Changed in: canonical-devices-system-image
Milestone: None => backlog
** Changed in: canonical-devices-system-image
Assignee: (unassigned) => Pat McGowan (pat-mcgowan)
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https://bugs.launchpad.net/bugs/1537668
Title:
upower charge history doesn't update when device resumes from suspend
Status in Canonical System Image:
Confirmed
Status in upower package in Ubuntu:
New
Bug description:
mako rc-proposed/ubunut 348
Possible one reason of the symptoms observed in bug 1471913
In some cases, apparently when the state of the device changes and the
device is immediately suspended, upower history stops being updated
and results in graphs like the one attached (ignore the sudden drop
then jump between 5:00AM and 10:00AM, investigation is still ongoing)
In the history file attached, the history stops on Sun, 24 Jan 2016
09:36:50 GMT (1453628210) It corresponds to the state change of the
device (charging -> discharging) around the same time (1453628284 -
Sun, 24 Jan 2016 09:38:04 GMT in power.20160124-103548.csv)
Then if you plug the device to a charger and unplug it but don't
suspend it the update of the history resumes normally (around
10:00PM). The graph shows the charge decreasing linearly (which is
wrong, it should look like the graph history-from-sysfs.png which is
based on battery/capacity sysfs entry)
The attached screenshot shows the network 4G data is available but
doesn't connect as shown in the indicator.
Possible Test Case:
1. Disable main sources of wakeup (bt, wifi, location, set airplane mode on)
2. plug it to a charger for a short time (15min or so), but don't fully charge it
3. unplug the DUT and press the power button to suspend it
4. wait several hours without waking up the device.
Actual Result
The history is not updating anymore.
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