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[Bug 879173] [NEW] Wifi connection dies with CPU high load

 

Public bug reported:

I've noticed that, when I run some application which is CPU-intensive
such as compiling and doing some number crunching, the wifi connection
just dies out and stays dead as long as the CPU load is high.  Once the
CPU load dies down, the network manager suddenly is able to re-establish
the connection.  This happens both when a single CPU core is taxed or
when I run multiple demanding processes.

I'm running Ubuntu 11.10, but this problem was already present in
previous Ubuntu releases.

The expected behaviour would be that the wifi connection didn't died
when the CPU got taxed.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: network-manager 0.9.1.90-0ubuntu4
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Fri Oct 21 01:16:54 2011
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
IpRoute:
 default via 192.168.1.1 dev wlan0  proto static 
 169.254.0.0/16 dev wlan0  scope link  metric 1000 
 192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.5  metric 2
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RfKill:
 0: phy0: Wireless LAN
 	Soft blocked: no
 	Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: Upgraded to oneiric on 2011-10-15 (5 days ago)

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oneiric

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/879173

Title:
  Wifi connection dies with CPU high load

Status in “network-manager” package in Ubuntu:
  New

Bug description:
  I've noticed that, when I run some application which is CPU-intensive
  such as compiling and doing some number crunching, the wifi connection
  just dies out and stays dead as long as the CPU load is high.  Once
  the CPU load dies down, the network manager suddenly is able to re-
  establish the connection.  This happens both when a single CPU core is
  taxed or when I run multiple demanding processes.

  I'm running Ubuntu 11.10, but this problem was already present in
  previous Ubuntu releases.

  The expected behaviour would be that the wifi connection didn't died
  when the CPU got taxed.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: network-manager 0.9.1.90-0ubuntu4
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  CRDA: Error: [Errno 2] No such file or directory
  Date: Fri Oct 21 01:16:54 2011
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  IpRoute:
   default via 192.168.1.1 dev wlan0  proto static 
   169.254.0.0/16 dev wlan0  scope link  metric 1000 
   192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.5  metric 2
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  ProcEnviron:
   LANGUAGE=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: network-manager
  UpgradeStatus: Upgraded to oneiric on 2011-10-15 (5 days ago)

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