After upgrading from Ubuntu 14.04 LTS to 16.04 LTS (xenial) I'm affected by this bug, too. If I connect an Apple iPad Mini using USB cable (with the intent to charge the tablet only) I get excessive CPU usage. Process /usr/lib/upower/upowerd owned by root seems to be doing nothing but eating CPU until I manually kill it or disconnect the iPad.
Comment #10 claims that this might be a kernel bug but the referenced source (http://web.archiveorange.com/archive/v/7azSgetwkAZWsEpXKXWy) is no longer available. $ apt-cache policy upower upower: Installed: 0.99.4-2ubuntu0.2 Candidate: 0.99.4-2ubuntu0.2 Version table: *** 0.99.4-2ubuntu0.2 500 500 http://fi.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 100 /var/lib/dpkg/status 0.99.4-2 500 500 http://fi.archive.ubuntu.com/ubuntu xenial/main amd64 Packages $ uname -a Linux semyol-329-b 4.4.0-24-lowlatency #43-Ubuntu SMP PREEMPT Wed Jun 8 20:27:10 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876279 Title: Upowerd excessive CPU usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/upower/+bug/876279/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
