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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1324448

Title:
  Different fan behaviour in my laptop after upgrade to ubuntu 14.04

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After upgrading from lubuntu 13.10 to 14.04 the fan of my laptop seems
  to run much more often than in 13.10. When it runs, it doesn't run
  continously but starts and stops every second.

  `fwts fan` results in

      Results generated by fwts: Version V14.03.01 (2014-03-27 02:14:17).
      
      Some of this work - Copyright (c) 1999 - 2014, Intel Corp. All rights reserved.
      Some of this work - Copyright (c) 2010 - 2014, Canonical.
      
      This test run on 12/05/14 at 21:40:13 on host Linux einstein 3.13.0-24-generic
      #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64.
      
      Command: "fwts fan".
      Running tests: fan.
      
      fan: Simple fan tests.
      --------------------------------------------------------------------------------
      Test 1 of 2: Test fan status.
      Test how many fans there are in the system. Check for the current status of the
      fan(s).
      PASSED: Test 1, Fan cooling_device0 of type Processor has max cooling state 10
      and current cooling state 0.
      PASSED: Test 1, Fan cooling_device1 of type Processor has max cooling state 10
      and current cooling state 0.
      PASSED: Test 1, Fan cooling_device2 of type LCD has max cooling state 15 and
      current cooling state 10.
      
      Test 2 of 2: Load system, check CPU fan status.
      Test how many fans there are in the system. Check for the current status of the
      fan(s).
      Loading CPUs for 20 seconds to try and get fan speeds to change.
      Fan cooling_device0 current state did not change from value 0 while CPUs were
      busy.
      Fan cooling_device1 current state did not change from value 0 while CPUs were
      busy.
      
      ADVICE: Did not detect any change in the CPU related thermal cooling device
      states. It could be that the devices are returning static information back to
      the driver and/or the fan speed is automatically being controlled by firmware
      using System Management Mode in which case the kernel interfaces being examined
      may not work anyway.
      
      
      ================================================================================
      3 passed, 0 failed, 0 warning, 0 aborted, 0 skipped, 0 info only.
      ================================================================================
      
      
      3 passed, 0 failed, 0 warning, 0 aborted, 0 skipped, 0 info only.
      
      Test Failure Summary
      ================================================================================
      
      Critical failures: NONE
      
      High failures: NONE
      
      Medium failures: NONE
      
      Low failures: NONE
      
      Other failures: NONE
      
      Test           |Pass |Fail |Abort|Warn |Skip |Info |
      ---------------+-----+-----+-----+-----+-----+-----+
      fan            |    3|     |     |     |     |     |
      ---------------+-----+-----+-----+-----+-----+-----+
      Total:         |    3|    0|    0|    0|    0|    0|
      ---------------+-----+-----+-----+-----+-----+-----+

  Here is the output of `lsmod`

      lsmod
      Module                  Size  Used by
      i8k                    14421  0 
      zram                   18478  2 
      dm_crypt               23177  0 
      gpio_ich               13476  0 
      dell_wmi               12761  0 
      sparse_keymap          13948  1 dell_wmi
      snd_hda_codec_hdmi     46207  1 
      snd_hda_codec_idt      54645  1 
      rfcomm                 69160  0 
      arc4                   12608  2 
      dell_laptop            18168  0 
      bnep                   19624  2 
      dcdbas                 14928  1 dell_laptop
      bluetooth             395423  10 bnep,rfcomm
      iwldvm                232285  0 
      mac80211              626511  1 iwldvm
      snd_hda_intel          52355  3 
      snd_hda_codec         192906  3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
      snd_hwdep              13602  1 snd_hda_codec
      snd_pcm               102099  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
      snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
      snd_seq_midi           13324  0 
      snd_seq_midi_event     14899  1 snd_seq_midi
      snd_rawmidi            30144  1 snd_seq_midi
      coretemp               13435  0 
      kvm_intel             143060  0 
      kvm                   451511  1 kvm_intel
      snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
      joydev                 17381  0 
      serio_raw              13462  0 
      iwlwifi               169932  1 iwldvm
      pcmcia                 62299  0 
      snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
      snd_timer              29482  2 snd_pcm,snd_seq
      lpc_ich                21080  0 
      cfg80211              484040  3 iwlwifi,mac80211,iwldvm
      yenta_socket           41027  0 
      pcmcia_rsrc            18407  1 yenta_socket
      pcmcia_core            23592  3 pcmcia,pcmcia_rsrc,yenta_socket
      binfmt_misc            17468  1 
      snd                    69238  17 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_idt,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
      soundcore              12680  1 snd
      parport_pc             32701  0 
      mac_hid                13205  0 
      ppdev                  17671  0 
      lp                     17759  0 
      parport                42348  3 lp,ppdev,parport_pc
      firewire_ohci          40409  0 
      psmouse               102222  0 
      sdhci_pci              23172  0 
      sdhci                  43015  1 sdhci_pci
      firewire_core          68769  1 firewire_ohci
      crc_itu_t              12707  1 firewire_core
      ahci                   25819  2 
      libahci                32168  1 ahci
      i915                  783485  2 
      wmi                    19177  1 dell_wmi
      i2c_algo_bit           13413  1 i915
      drm_kms_helper         52758  1 i915
      e1000e                254433  0 
      drm                   302817  3 i915,drm_kms_helper
      ptp                    18933  1 e1000e
      pps_core               19382  1 ptp
      video                  19476  1 i915

  In a discussion on askubuntu about this topic:
  http://askubuntu.com/questions/459707/different-fan-behaviour-in-my-
  laptop-after-upgrade-to-ubuntu-14-04 a user suggested that this may be
  a bug in the 3.13 kernel and that there seems to be a patch applied in
  14.04. It would be great if you could patch/upgrade the current kernel
  release in the repositories such that this bug will be fixed just by
  upgrading the kernel image using aptitude.

  The askubuntu discussion also revealed that other users have this
  problem too: http://askubuntu.com/questions/464745/loud-fan-on-
  ubuntu-14-04, http://askubuntu.com/questions/460109/excessive-
  fan-14-04, http://askubuntu.com/questions/454501/fan-is-always-on-cpu-
  usage-is-rather-low-and-cant-find-the-fan-or-thermal-zone

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-27-generic 3.13.0-27.50
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  dominic    2344 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  Date: Thu May 29 11:01:00 2014
  HibernationDevice: RESUME=UUID=30d635a4-7e8e-43e5-85f6-20de5e5650e6
  InstallationDate: Installed on 2013-11-22 (187 days ago)
  InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Dell Inc. Latitude E6400
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic root=UUID=55ce66dc-09d8-4746-9c2e-f11693ff17ab ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  SourcePackage: linux
  StagingDrivers: zram
  UpgradeStatus: Upgraded to trusty on 2014-04-30 (28 days ago)
  WifiSyslog:
   
  dmi.bios.date: 06/04/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A34
  dmi.board.name: 0G983N
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA34:bd06/04/2013:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0G983N:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude E6400
  dmi.sys.vendor: Dell Inc.

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