Able to confirm the issue with latest vivid on mako: phablet@ubuntu-phablet:~$ system-image-cli -i current build number: 65 device name: mako channel: ubuntu-touch/vivid-proposed last update: 2015-01-14 20:03:32 version version: 65 version ubuntu: 20150114.1 version device: 20141213 version custom: 20150114.1
phablet@ubuntu-phablet:~$ dpkg -l | grep mtp-server ii mtp-server 0.0.4+15.04.20141113-0ubuntu1 armhf Small server implementation of MTP. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mtp in Ubuntu. https://bugs.launchpad.net/bugs/1410506 Title: MTP looping between start and stopping causing constant ~10% cpu load Status in mtp package in Ubuntu: Confirmed Bug description: When unplugged from USB, I notice when running $ top that init, dbus- daemon, mpdecision are constantly using in total ~10% CPU. The steps I have performed to cause this: 1) Ensure the device is off 2) Plug a USB cable into the device and a computer with MTP support 3) Boot the device 4) Unlock the device, run the terminal and the command $ top 5) Wait until the CPU settles, then unplug the USB cable 6) Now notice that init, dbus-daemon, mpdecision start using ~10% CPU This is the output from running dbus-monitor [0] Note that when I plugged my device into a PC the CPU usage reduced back to normal, but then when I unplugged it again it increased back to ~10% again. 0 - http://pastebin.ubuntu.com/9734788/ $ system-image-cli -i current build number: 161 device name: mako channel: ubuntu-touch/ubuntu-rtm/devel-proposed alias: ubuntu-touch/ubuntu-rtm/14.09-proposed last update: 2015-01-13 18:37:40 version version: 161 version ubuntu: 20150113 version device: 20141119 version custom: mako-1.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mtp/+bug/1410506/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp