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[Philip Machanick <1530014@xxxxxxxxxxxxxxxxxx>]

I have exactly the same issue with an iPhone 4S. I also checked with an
Android phone, no problem.

Tested repeatably on 2 different systems with completely different logic
boards and chipsets, USB and USB 3 both do the same. Both machines were
fine with Ubuntu 15.04. Upgrade to 15.10, this error surfaces.

If there is no UPS connected, the phone is still incorrectly reported as
a power source in the Power System Settings but the shutdown behaviour
doesn't occur.

Another thing: on restart after the crash, I get a system error report
showing that /usr/lib/upower/upowerd has core dumped.

This is a pretty bad error that in effect means you can't charge an iOS
device on an Ununtu 15.10 machine that is on a UPS. If you unplug the
USB connector from the UPS it does appear to stop the false report that
the UPS is depleting but that is not a good workaround.

Most relevant entries from /var/log/syslog :

Feb  8 11:50:46 philip-ubuntu-office systemd[1]: Starting Daemon for power management...
Feb  8 11:50:46 philip-ubuntu-office systemd[1]: Started Daemon for power management.
Feb  8 11:50:47 philip-ubuntu-office usbmuxd[2611]: [11:50:47.831][1] config_get_device_record: failed to read '/var/lib/lockdown/86bcd536244b1ef5b32876ad93597a1802bbde93.plist': No such file or directory
Feb  8 11:50:48 philip-ubuntu-office upowerd[2759]: *** Error in `/usr/lib/upower/upowerd': double free or corruption (!prev): 0x0000556d7058d260 ***
Feb  8 11:50:48 philip-ubuntu-office systemd[1]: upower.service: Main process exited, code=dumped, status=6/ABRT
Feb  8 11:50:48 philip-ubuntu-office systemd[1]: upower.service: Unit entered failed state.
Feb  8 11:50:48 philip-ubuntu-office systemd[1]: upower.service: Failed with result 'core-dump'.
Feb  8 11:50:48 philip-ubuntu-office systemd[1]: upower.service: Service hold-off time over, scheduling restart.

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https://bugs.launchpad.net/bugs/1530014

Title:
  When charging phone/tablet, power management says UPS battery is low
  and causes immediate shutdown

Status in upower package in Ubuntu:
  Confirmed

Bug description:
  Short story: 
  I have a CyberPower 825AVR (USB attached) when attaching my iPhone or iPad (via USB) to charge, the Unity (gnome power manager?) displays a message saying the UPS battery is critically low and the system will shut down immediately. It does shut down immediately. It seems that upowerd or the gnome power manager "confuses" the device's (e.g., my iPhone's) battery with my UPS's battery. Interestingly, if I unplug the UPS cable, plug-in my iPhone, and then plug-in my UPS, the system does not shut down. However, the gnome power manager icon disappears and reappears at an interval of a second or two. 

  Hopefully Useful Details:
  - Fresh install of Ubuntu 15.10 on my mid-2011 (i5-2400S, 20GB RAM) 21.5" iMac. 
  - Single boot (OS/X is not installed). 
  - UPS battery is in good health and fully charged. 
  - Power drain on UPS is minimal: iMac, additional LCD display, and desktop speakers.

  upower:
    Installed: 0.99.3-1build2
    Candidate: 0.99.3-1build2
    Version table:
   *** 0.99.3-1build2 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status

  gnome-power-manager:
    Installed: 3.16.1-1ubuntu1
    Candidate: 3.16.1-1ubuntu1
    Version table:
   *** 3.16.1-1ubuntu1 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status

  I wrote a mark in syslog before plugging in my iPhone and attached the
  (hopefully) relevant part of the log. I think line 41 is the key.

  Of course, if you need info or help, please ask.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: upower 0.99.3-1build2
  ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
  Uname: Linux 4.2.0-22-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Dec 29 20:35:33 2015
  InstallationDate: Installed on 2015-12-21 (8 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: upower
  UpgradeStatus: No upgrade log present (probably fresh install)

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