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[Fabian Herb <1395555@xxxxxxxxxxxxxxxxxx>]

** Attachment added: "dbus-daemon.strace.txt.gz"
   https://bugs.launchpad.net/ubuntu/+source/powerd/+bug/1395555/+attachment/4266423/+files/dbus-daemon.strace.txt.gz

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https://bugs.launchpad.net/bugs/1395555

Title:
  powerd eats 100% CPU on mako

Status in “powerd” package in Ubuntu:
  New

Bug description:
  After charging the phone on a USB port of a PC with a cheap USB cable,
  the battery is nearly drained and powerd is taking 100% CPU time.
  dbus-daemon is at about 25%.

  top - 01:50:35 up 2 days, 14:53,  2 users,  load average: 3,67, 3,96, 5,22
  Tasks: 274 total,   3 running, 258 sleeping,  13 stopped,   0 zombie
  %Cpu(s):  0,0 us,  0,0 sy,  0,0 ni,100,0 id,  0,0 wa,  0,0 hi,  0,0 si,  0,0 st
  KiB Mem:   1878572 total,  1831220 used,    47352 free,   138200 buffers
  KiB Swap:    32764 total,     2252 used,    30512 free.   363644 cached Mem

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                         
    959 root      20   0  142588  77576   6796 R  93,3  4,1  43:13.63 powerd                                                                                                          
    766 message+  20   0   19184  15964    756 S  25,9  0,8 186:40.76 dbus-daemon                                                                                                     
   1453 phablet   20   0  222080 216792   1216 S  11,5 11,5 296:37.46 init                                                                                                            
   2765 phablet   20   0  562320 157888  59228 R   4,2  8,4  97:40.70 unity8                                                                                                          
   1012 phablet   20   0   52348   2464   2024 D   2,6  0,1   0:00.08 mtp-server                                                                                                      
   1574 phablet   20   0    5344   2428    748 S   1,9  0,1  71:45.05 dbus-daemon                                                                                                     
   1139 root       0 -20    7572    552    400 S   1,6  0,0  69:42.90 mpdecision                                                                                                      
   1601 root      20   0   53132  19412   3076 S   1,6  1,0  18:22.89 upowerd                                                                                                         
  32612 phablet   20   0    6492   1380    860 R   1,3  0,1   0:00.90 top

  Attached are strace outputs of both processes. Note that I'm currently
  also experiencing problems with init (lp:1281061), which might
  interfere with the output of dbus-daemon.

  ProblemType: Bug
  DistroRelease: Ubuntu RTM 14.09
  Package: powerd 0.16+14.10.20141027~rtm-0ubuntu1
  Uname: Linux 3.4.0-5-mako armv7l
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: armhf
  Date: Mon Nov 24 01:57:53 2014
  ExecutablePath: /usr/bin/powerd
  InstallationDate: Installed on 2014-11-14 (9 days ago)
  InstallationMedia: Ubuntu Utopic Unicorn (development branch) - armhf (20141114-104944)
  LocalLibraries: /android/system/lib/libsync.so /android/system/lib/liblog.so /android/system/lib/libc.so /android/system/lib/libinput.so /android/system/lib/libEGL.so /android/system/lib/libdsyscalls.so /android/system/lib/libgccdemangle.so /android/system/lib/libbinder.so /android/system/lib/libutils.so /android/system/lib/libhardware.so /android/system/lib/libwpa_client.so /android/system/lib/libcorkscrew.so /android/system/lib/libhardware_legacy.so /android/system/lib/hw/lights.msm8960.so /android/system/lib/libcutils.so /android/system/lib/libandroidfw.so /android/system/lib/libnetutils.so /android/system/lib/libm.so /android/system/lib/hw/power.msm8960.so /android/system/lib/libz.so /android/system/lib/libGLESv2.so /android/system/lib/libstdc++.so /android/system/lib/libstlport.so /android/system/lib/libubuntu_application_api.so /android/system/lib/libgui.so /android/system/lib/libGLES_trace.so /android/system/lib/libui.so
  ProcEnviron:
   PATH=(custom, no user)
   TERM=linux
  SourcePackage: powerd
  UpgradeStatus: No upgrade log present (probably fresh install)

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