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Message #47655
[Bug 1410506] Re: MTP looping between start and stopping causing constant ~10% cpu load
This is killing my battery on mako, as there is no respawn limit, it
keeps opening and closing mtp (as it always gets Input/output error).
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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
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References