** Attachment added: "history-from-sysfs.png"
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1537668/+attachment/4556127/+files/history-from-sysfs.png
** Description changed:
mako rc-proposed/ubunut 348
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.
** Description changed:
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.
** Changed in: canonical-devices-system-image
Importance: Undecided => High
** Also affects: upower (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1537668
Title:
upower charge history doesn't update when device resumes from suspend
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