You have been subscribed to a public bug:
wpa_supplicant eats lot of CPU resources and generate repeated errors:
iwl3945 0000:03:00.0: Radio disabled by HW RF Kill switch
This error appears even if WiFi switch is set to off.
'sudo modprobe -r iwl3945' disables wpa_supplicant and errors stop.
If I switch WiFi on and connect to my hotspot everything back to normal.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-19-lowlatency 3.8.0-19.13
ProcVersionSignature: Ubuntu 3.8.0-19.13-lowlatency 3.8.8
Uname: Linux 3.8.0-19-lowlatency i686
ApportVersion: 2.9.2-0ubuntu8
Architecture: i386
Date: Tue Apr 30 12:17:06 2013
InstallationDate: Installed on 2012-04-29 (365 days ago)
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release i386
(20120423)
MarkForUpload: True
SourcePackage: linux-lowlatency
UpgradeStatus: Upgraded to raring on 2013-04-26 (4 days ago)
** Affects: wpasupplicant (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 iwl3945 linux raring trusty wpa-supplicant
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wpa_supplicant it's CPU hog and generate errors
https://bugs.launchpad.net/bugs/1174694
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