There was a crash and then mtp-server restarting in loop, which caused it to show on top: phablet@ubuntu-phablet:~$ cat ./.cache/upstart/mtp-server.log I0114 20:04:11.081110 2914 server.cpp:419] MTP server starting... E0114 20:04:11.103268 2914 server.cpp:440] Could not start the MTP server:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.UnityGreeter was not provided by any .service files I0114 20:04:21.545111 3012 server.cpp:419] MTP server starting... E0114 20:04:21.571146 3012 server.cpp:440] Could not start the MTP server:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.UnityGreeter was not provided by any .service files I0114 20:04:32.033162 3334 server.cpp:419] MTP server starting... E0114 20:55:23.626266 3334 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 20:55:27.263805 5108 server.cpp:419] MTP server starting... I0114 20:56:21.600800 3143 server.cpp:419] MTP server starting... E0114 21:02:16.476572 3143 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:16.623710 4157 server.cpp:419] MTP server starting... E0114 21:02:16.651300 4157 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:17.229143 4175 server.cpp:419] MTP server starting... E0114 21:02:17.250813 4175 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:17.651392 4196 server.cpp:419] MTP server starting... E0114 21:02:17.668025 4196 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:17.769384 4212 server.cpp:419] MTP server starting... E0114 21:02:17.790657 4212 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:18.251240 4226 server.cpp:419] MTP server starting... E0114 21:02:18.267659 4226 MtpServer.cpp:174] request read returned -1: Input/output error [5] *** Error in `/usr/bin/mtp-server': double free or corruption (!prev): 0x01d78008 *** I0114 21:02:21.462715 4249 server.cpp:419] MTP server starting... E0114 21:02:21.476754 4249 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:21.872237 4259 server.cpp:419] MTP server starting... E0114 21:02:21.888077 4259 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:22.478128 4276 server.cpp:419] MTP server starting... E0114 21:02:22.494457 4276 MtpServer.cpp:174] request read returned -1: Input/output error [5] I0114 21:02:22.977716 4292 server.cpp:419] MTP server starting...
-- 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
