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[Bug 1050843] Re: scaling_max_freq always on lowest


Dejan, as per
an update is available for your BIOS (F.13). If you update to this
following https://help.ubuntu.com/community/BiosUpdate , does it change

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful.

For more on BIOS updates and linux, please see

Thank you for your understanding.

** Tags added: bios-outdated-f.13

** Changed in: linux (Ubuntu)
       Status: Triaged => Incomplete

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  scaling_max_freq always on lowest

Status in “linux” package in Ubuntu:

Bug description:

  I have HP EliteBook 8440p with quadcore CPU, using Ubuntu 12.04 and Gnome-Shell 3 using two bateries.
  I noticed following:
  When batery comes under certain available power and/or when laptop is on power adapter and bateries are charging, until bateries are over 85% (not sure correct number), I can't change scaling_max_freq to maximum number.
  It stays on lowest possible freq and can't be changed.
  When bateries are over 85%, I can change this file.

  vi says : "E667: Fsync failed" when I try to save the chages.
  echo 2534000 > scaling_max_freq doesn't say anything, it just silently does nothing.
  I am using performance governor.

  This is my rc.local which I use to set frequencies and governour:
  echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
  echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
  echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
  echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor

  echo 2534000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
  echo 2534000 > /sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq
  echo 2534000 > /sys/devices/system/cpu/cpu2/cpufreq/scaling_max_freq
  echo 2534000 > /sys/devices/system/cpu/cpu3/cpufreq/scaling_max_freq

  And here is my /etc/sysfs.conf
  devices/system/cpu/cpu0/cpufreq/scaling_governor = performance
  devices/system/cpu/cpu1/cpufreq/scaling_governor = performance
  devices/system/cpu/cpu2/cpufreq/scaling_governor = performance
  devices/system/cpu/cpu3/cpufreq/scaling_governor = performance  

  devices/system/cpu/cpu0/cpufreq/scaling_max_freq = 2534000
  devices/system/cpu/cpu1/cpufreq/scaling_max_freq = 2534000
  devices/system/cpu/cpu2/cpufreq/scaling_max_freq = 2534000
  devices/system/cpu/cpu3/cpufreq/scaling_max_freq = 2534000

  /etc/init.d/ondemand is disabled.

  I changed all this files, because I got performance problems (cpu on maximum when using firefox and laptop was draging).
  Then I noticed that I can set cpu (with indicator-cpufreq) to more then minimum freq, so I found out that my scaling_max_freq is also on lowest frequency.

  uname -a
  Linux 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  Bug is similar to this bugs?
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu13
  Architecture: amd64
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
   /dev/snd/controlC0:  rodiger    2553 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
   Card hw:0 'Intel'/'HDA Intel at 0xd4720000 irq 48'
     Mixer name	: 'Intel IbexPeak HDMI'
     Components	: 'HDA:111d7603,103c172a,00100202 HDA:80862804,80860101,00100000'
     Controls      : 37
     Simple ctrls  : 13
   Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
   dmesg: write failed: Broken pipe
  DistroRelease: Ubuntu 12.04
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: Hewlett-Packard HP EliteBook 8440p
  Package: linux (not installed)
   Socket 0:
    PC Card
     Subdevice 0 (function 0) bound to driver "pata_pcmcia"
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-31-generic root=UUID=3fe8e16b-1daf-4197-8604-40a9f6f338cd ro splash quiet vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
  Tags:  precise
  Uname: Linux 3.2.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: davfs2 sudo
  dmi.bios.date: 03/09/2011
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68CCU Ver. F.12
  dmi.board.name: 172A
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 30.31
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68CCUVer.F.12:bd03/09/2011:svnHewlett-Packard:pnHPEliteBook8440p:pvr:rvnHewlett-Packard:rn172A:rvrKBCVersion30.31:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP EliteBook 8440p
  dmi.sys.vendor: Hewlett-Packard

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