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[Bug 1388488] Status changed to Confirmed

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Brad Figg <brad.figg@xxxxxxxxxxxxx>
Date: Sun, 02 Nov 2014 02:30:12 -0000
Reply-to: Bug 1388488 <1388488@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This change was made by a bot.

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1388488

Title:
  iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  See http://forums.linuxmint.com/viewtopic.php?f=49&t=181680&e=0
  (Text from above is copied below)

  I have just installed Linux Mint 17 on one of my laptops.
  syslog and kern.log are going crazy. 

  kern.log is filling up with lines like this:
  [code]Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.138890] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.139569] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.144192] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.144563] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.146589] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.147038] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.148757] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.149123] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.151086] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
  Nov  2 09:35:42 mark-HP-Compaq-nc6400-RR980UC-ABG kernel: [ 3081.151381] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch[/code]

  syslog is filling up with lines like this:
  [code]Nov  2 09:28:17 mark-HP-Compaq-nc6400-RR980UC-ABG NetworkManager[768]: <warn> Trying to remove a non-existant call id.
  Nov  2 09:28:17 mark-HP-Compaq-nc6400-RR980UC-ABG wpa_supplicant[813]: Could not set interface wlan0 flags (UP): No such device
  Nov  2 09:28:17 mark-HP-Compaq-nc6400-RR980UC-ABG wpa_supplicant[813]: nl80211: Could not set interface 'wlan0' UP
  Nov  2 09:28:17 mark-HP-Compaq-nc6400-RR980UC-ABG wpa_supplicant[813]: Could not set interface wlan0 flags (UP): No such device
  Nov  2 09:28:17 mark-HP-Compaq-nc6400-RR980UC-ABG wpa_supplicant[813]: WEXT: Could not set interface 'wlan0' UP
  Nov  2 09:28:17 mark-HP-Compaq-nc6400-RR980UC-ABG wpa_supplicant[813]: wlan0: Failed to initialize driver interface
  Nov  2 09:28:17 mark-HP-Compaq-nc6400-RR980UC-ABG NetworkManager[768]: <error> [1414873697.838472] [nm-supplicant-interface.c:997] interface_add_cb(): (wlan0): error adding interface: wpa_supplicant couldn't grab this interface.
  [/code]

  wpa_supplicant and rsyslogd are tanking the CPU (two-core laptop):
  [code]top - 09:29:44 up 45 min,  3 users,  load average: 3.28, 3.36, 3.22
  Tasks: 163 total,   4 running, 159 sleeping,   0 stopped,   0 zombie
  %Cpu(s): 48.9 us, 29.7 sy,  0.0 ni, 20.7 id,  0.2 wa,  0.5 hi,  0.0 si,  0.0 st
  KiB Mem:   3082052 total,  2998228 used,    83824 free,     5168 buffers
  KiB Swap:  1998844 total,    34532 used,  1964312 free.  2062920 cached Mem

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                   
    813 root      20   0   30476   1004    856 R  49.7  0.0  22:46.56 wpa_supplicant                                                                            
    551 syslog    20   0  255844   1172    716 S  26.2  0.0  12:00.12 rsyslogd                                                                                  
    768 root      20   0  340840   3976   3336 S  24.2  0.1  11:06.54 NetworkManager                                                                            
    497 message+  20   0   40008   1744    900 R  14.2  0.1   6:24.06 dbus-daemon      [/code]                                                                         

  I believe it is related to the following bug:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178841

  Does anyone have a fix for this? Due to the excessive CPU load and filling up the root filesystem with logs the system is under heavy strain and not usable for what I plan for it.
  I have already had to delete syslog.1 and kern.log.1 once... the root filesystem had 0 bytes free, I waited for the system to automatically create the .1 files then I deleted them.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mark       1917 F.... pulseaudio
  CurrentDesktop: X-Cinnamon
  Date: Sun Nov  2 15:13:14 2014
  HibernationDevice: RESUME=UUID=ba7c5f8c-8e81-47fc-b3f5-ca9b24261ee1
  InstallationDate: Installed on 2014-11-01 (0 days ago)
  InstallationMedia: Linux Mint 17 "Qiana" - Release amd64 20140624
  MachineType: Hewlett-Packard HP Compaq nc6400 (RR980UC#ABG)
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_NZ.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=184995ef-e8ca-4ffe-b057-6bf722ec771a ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/26/2006
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68YCD Ver. F.06
  dmi.board.name: 30AC
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 56.34
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68YCDVer.F.06:bd10/26/2006:svnHewlett-Packard:pnHPCompaqnc6400(RR980UC#ABG):pvrF.06:rvnHewlett-Packard:rn30AC:rvrKBCVersion56.34:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP Compaq nc6400 (RR980UC#ABG)
  dmi.product.version: F.06
  dmi.sys.vendor: Hewlett-Packard

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References

[Bug 1388488] [NEW] iwl3945 0000:10:00.0: Radio disabled by HW RF Kill switch
From: Zelek Uther, 2014-11-02