NetworkManager high CPU usage while nm-applet and Transmission run

[Jean-Pierre Rupp]

If I leave my computer downloading overnight using BitTorrent client Transmission, I notice the next day that the NetworkManager process is eating up lots of CPU power. It gets immediately fixed if I kill nm-applet, although when I relaunch nm-applet CPU usage skyrockets again. Killing Transmission doesn't affect anything. I'm not sure there is a relation between Transmission and this issue, I just mention it because I only leave my computer on overnight when I download torrents.

[Jean-Pierre Rupp (xenog)]

Description: Ubuntu 12.04 LTS
Release: 12.04

Linux m1530 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Package: network-manager
Priority: optional
Section: net
Installed-Size: 1688
Maintainer: Ubuntu Core Dev Team <email address hidden>
Architecture: amd64
Version: 0.9.4.0-0ubuntu4.1

Package: transmission
Priority: optional
Section: net
Installed-Size: 20
Maintainer: Ubuntu Developers <email address hidden>
Architecture: all
Version: 2.33-0ubuntu2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Nicholas Shatokhin (robotex)]

When transmission closed NetworkManager still loads CPU

[Bart Rodek (bdr)]

It helps if you enable and disable the network (wireless module in my case)...

[Earthson (earthson-landy)]

Same Issue here.
when I start transmission, network-manager, deja-dup and whooise runs at high CPU level.

[Vladislav Kononenko (vladislavkononenko)]

It's may be duplicate of https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/987858

[Mathieu Trudel-Lapierre (cyphermox)]

I've never been able to reproduce this issue.

Jean-Pierre: please use 'apport-collect 1009879' to add additional debugging information to this bug reports.

All others seeing similar issues: please file your own bug report, in case it's in fact not the same issue. I'll mark them as duplicate as required.

[Jean-Pierre Rupp (xenog)]

I haven't been able to replicate this again. Just close the report. It may have been fixed upstream or something.

Mathieu Trudel-Lapierre <email address hidden> wrote:

>I've never been able to reproduce this issue.
>
>Jean-Pierre: please use 'apport-collect 1009879' to add additional
>debugging information to this bug reports.
>
>All others seeing similar issues: please file your own bug report, in
>case it's in fact not the same issue. I'll mark them as duplicate as
>required.
>
>** Changed in: network-manager (Ubuntu)
> Status: Confirmed => Incomplete
>
>** Changed in: network-manager (Ubuntu)
> Importance: Undecided => Medium
>
>--
>You received this bug notification because you are subscribed to the
>bug
>report.
>https://bugs.launchpad.net/bugs/1009879
>
>Title:
> NetworkManager high CPU usage while nm-applet and Transmission run
>
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[Thomas Hood (jdthood)]

The dupes report problems with Precise so it may be too soon to close this.

[Daniel (danielgh)]

Just upgraded yesterday from 10.04LTS to 12.04 using XFCE. Have experienced an identical problem : as soon as Transmission is started, network-manager starts running the CPU at over 60%. Without Transmission, I've noticed no such problem.

[Mystic-Mirage (mystic-mirage)]

I have the same problem.

[SmilingInSeattle (dixonhoyle)]

High Network usage 98-100% usage one one core or another shown by nm-applet for File Manager process(root) when running jDownloader, and http file transfer (upload) with nautilus and files are being transferred. Closed Transmission after reading this bug report, but now change in File Manager CPU usage. Cores on a dual core processor switch roles periodically, but one or the other runs constantly at 100% according to the nm-applet.

Ubuntu 12.04.1 install with curr (to date) updates.

[Amil (amilkhanzada)]

I have the exact same problem! I killed nm-applet and NetworkManager to bring my CPU usage back down.
This was clearly due to Transmission, because I never had this problem until I started seeding a torrent with Transmission.

[ilaiho (ilaiho)]

No one appears to be interested in fixing desktop *nix bugs anymore, maybe beacuse of the smartphone/tablet fad.

Does this possibly have something to do with hardware? I have NVIDIA MCP61 chipset.

[Maksim Lisnyak (lisnm)]

Yesterday I changed my internet provider. And I saw the same problem. Before I used PPPoE connection and i didn't have this problem. Now I use simple wired connection and Network Manager load CPU when I use internet, not only P2P.

[Maksim Lisnyak (lisnm)]

Sorry, I was wrong. Problem occured only with start transmission
I'v solved my problem. I used ppa:mathieu-tl/nm and update network manager from 0.9.4.0-0ubuntu4.1 to 0.9.4.0-0ubuntu4.2.

Ubuntu 12.04

[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]

[Jean-Pierre Rupp (xenog)]

This stopped happening to me some time ago, I can't tell when. It's all good FYI.

[Mike McNally (emmecinque)]

I am seeing the same thing in 15.10 at this very moment.