Public bug reported:

When on running on battery power, the wireless connection slows down to
a crawling pace, or stops entirely.

If I run " /sbin/iwconfig eth1 power off  " after unpluggin the computer
from the AC, the wireless begins to behave normally again.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-30-generic 3.2.0-30.48
ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
Uname: Linux 3.2.0-30-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  andre      1760 F.... pulseaudio
 /dev/snd/controlC0:  andre      1760 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not 
found.
Card0.Amixer.info:
 Card hw:0 'Generic'/'HD-Audio Generic at 0xf0444000 irq 42'
   Mixer name   : 'ATI R6xx HDMI'
   Components   : 'HDA:1002aa01,00aa0100,00100200'
   Controls      : 6
   Simple ctrls  : 1
Card0.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Card1.Amixer.info:
 Card hw:1 'SB'/'HDA ATI SB at 0xf0440000 irq 16'
   Mixer name   : 'Conexant CX20588'
   Components   : 'HDA:14f1506c,10250598,00100000'
   Controls      : 18
   Simple ctrls  : 12
Date: Fri Sep 14 18:42:40 2012
HibernationDevice: RESUME=UUID=f5b93b65-0d5c-461a-9d70-75e770fc7573
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 002: ID 064e:d214 Suyin Corp.
MachineType: Acer AO722
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-30-generic 
root=UUID=fb8ab3e3-cf16-40d8-9ef3-5095bebaf4d2 ro radeon.audio=1
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-30-generic N/A
 linux-backports-modules-3.2.0-30-generic  N/A
 linux-firmware                            1.79.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/24/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.05
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JE10-BZ
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.05
dmi.modalias: 
dmi:bvnAcer:bvrV1.05:bd08/24/2011:svnAcer:pnAO722:pvrV1.05:rvnAcer:rnJE10-BZ:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.05:
dmi.product.name: AO722
dmi.product.version: V1.05
dmi.sys.vendor: Acer

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug precise running-unity

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https://bugs.launchpad.net/bugs/1051103

Title:
  wireless misbehaves / disconnects when running on battery

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