Public bug reported:
After upgrading from the latest 14.04 LTS to the latest 16.04.2 LTS on my
Lenovo Thinkpad X1 Carbon, the battery level is detected and displayed
incorrect after charging the battery while the system is suspended.
Example: I work in my notebook while it is not connected to the power supply
until the battery is down to lets say 4%. I'll close the lid (=> suspend),
bring it to the place where I have the power supply and connect for charge.
After my break, I'll disconnect the still suspended notebook, take it back to
the place I used to work in it(for example outside; there is no power on that
place, can be far from the place where I charge it) and open the lid to resume
the system. Every time I'll get shocked and doubt if the battery was charged
properly because it will still show the level from before, e.g. the 4%. In some
cases when the battery level is detected as critically low, the system will
directly suspend again, thinking the battery is going to get empty. If I want
the battery level to be displayed correctly, I have to connect the charger
while the system is not suspended which can be a pain in the a** when I am far
away from the power supply.
Eventually I now found another workaround for this problem with creating
a script in /usr/lib/pm-utils/sleep.d with somethink like
...
thaw|resume)
service upower restart
;;
...
Anyway, I think something basic like detecting the correct battery level
on a notebook on an Ubuntu LTS release should really work out of the box
without that kind of workaround.
$ lsb_release -rd
Description: Ubuntu 16.04.2 LTS
Release: 16.04
$ uname -a
Linux c4rkb0n 4.8.0-46-generic #49~16.04.1-Ubuntu SMP Fri Mar 31 14:51:03 UTC
2017 x86_64 x86_64 x86_64 GNU/Linux
** Affects: devicekit-power (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1686269
Title:
Incorrect battery level after resume
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