The fix for this is now in RTM:
mtp (0.0.4+15.04.20150120~rtm-0ubuntu1) 14.09; urgency=low
[ Mathieu Trudel-Lapierre ]
* Adjust start and stop conditions to properly handle USB connection
*and* disconnection, and to do the right thing at boot-time if USB
is connected already.
Closing
** Changed in: canonical-devices-system-image
Status: Confirmed => Fix Released
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Title:
MTP looping between start and stopping causing con
** Changed in: mtp (Ubuntu RTM)
Status: New => In Progress
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Title:
MTP looping between start and stopping causing constant ~10% cpu load
** Changed in: mtp (Ubuntu)
Status: Confirmed => Fix Released
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Title:
MTP looping between start and stopping causing constant ~10% cpu loa
** Changed in: canonical-devices-system-image
Importance: Undecided => High
** Changed in: canonical-devices-system-image
Status: New => Confirmed
** Changed in: canonical-devices-system-image
Milestone: None => ww05-2015
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** Also affects: mtp (Ubuntu RTM)
Importance: Undecided
Status: New
** Also affects: canonical-devices-system-image
Importance: Undecided
Status: New
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** Branch linked: lp:~mathieu-tl/mtp/lp1410506
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Title:
MTP looping between start and stopping causing constant ~10% cpu load
To manage notificat
** Changed in: mtp (Ubuntu)
Importance: High => Undecided
** Changed in: mtp (Ubuntu)
Status: Triaged => Confirmed
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Title:
MTP looping
** Changed in: mtp (Ubuntu)
Importance: Undecided => High
** Changed in: mtp (Ubuntu)
Assignee: (unassigned) => Mathieu Trudel-Lapierre (mathieu-tl)
** Changed in: mtp (Ubuntu)
Status: Confirmed => Triaged
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B
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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Title:
Backtrace I got:
(gdb) bt full
#0 __libc_do_syscall () at
../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44
No locals.
#1 0xb6c77e5e in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
_a1 = 0
_a3tmp = 6
_a1tmp = 0
_a3 = 6
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:or
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
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mtp (Ubuntu)
Status: New => Confirmed
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Title:
MTP lo
Note my PC is running utopic with the following mtp version
$ lsb_release -rd
Description:Ubuntu 14.10
Release:14.10
$ uname -a
Linux andy-Pangolin-Performance 3.19.0-031900rc4-generic #201501112135 SMP Sun
Jan 11 21:36:48 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
$ apt-cache policy l
** Description changed:
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 su
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