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[luca <llucax@xxxxxxxxx>]

OK, after quite some time trying to upgrade the BIOS I finally succeed.
For other people that might find this information useful, this is how I
finally did it, using FreeDOS and an usb drive.

1. Install unetbootin: apt-get install unetbootin
2. connect the USB drive
3. umount it if it was automatically mounted, make a linux16 partition on it (I've used fdisk), mark the partition as booteable
4. open unetbootin and select FreeDOS as the distribution, select the USB drive partition you just formatted (it has to be mounted) and write it
5. Instead of downloading the BIOS update from the Toshiba Europe website that only offers a Windows executblae, go to the US website and download the update from any Portage Z830 (I've used the one for the BT8300 model), which is zip file disguised as a Windows executable. I downloaded this file precisely: http://cdgenp01.csd.toshiba.com/content/support/downloads/t224v180.exe
6. Unzip the file contents in the USB drive with FreeDOS
7. Reboot from your USB drive
8. Select safe mode from the boot menu
9. go to the C: drive: C:
10. run: CHGBIOSF C:\BIO0081T.COM

Now I need to play with different kernel booting option to see if I can get the CPU frequency properly working without breaking other stuff. I just realized I never commented here how I partially fixed this problem. Here it is:
http://www.llucax.com.ar/blog/blog/post/-31ba9e5e

The issue I have now is the brightness control gets broken after the
first suspend-resume.

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https://bugs.launchpad.net/bugs/987531

Title:
  [Toshiba Satellite -10J] cpufreq is not working properly

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I'm trying Ubuntu 12.04 beta2 and I'm having a problem with cpufreq.
  The default governor is ondemand and it's not working properly, the
  frequency is stuck at the lowest one, which makes the notebook really
  annoying to use. I've tried the performance governor and it looks like
  the CPU goes to the maximum frequency, but when querying with cpufreq-
  info, I still see the minimum freq, but in the statistics about the
  frequencies used, I see the maximum frequency getting more and more
  percentage of use.

  Finally I tried the convervative governor, and it really look like it
  behaves like the ondeman should. The frequency is rapidily increased
  as needed and dropped down again when is not needed anymore. This is
  the only governor that seems to be changing the frequency in a way
  cpufreq-info can really see it, as I see the frequency going up and
  down when using that governor. The userspace governor also seems to be
  working as expected.

  Another strange this is that among the supported frequencies, I get
  1.60GHz (the maximum frequency supported) listed twice.

  Here is an example run of cpufreq-info:
  cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
  Report errors and bugs to cpufreq@xxxxxxxxxxxxxxx, please.
  analyzing CPU 0:
    driver: acpi-cpufreq
    CPUs which run at the same hardware frequency: 0 1 2 3
    CPUs which need to have their frequency coordinated by software: 0
    maximum transition latency: 10.0 us.
    hardware limits: 800 MHz - 1.60 GHz
    available frequency steps: 1.60 GHz, 1.60 GHz, 1.50 GHz, 1.40 GHz, 1.30 GHz, 1.20 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
    available cpufreq governors: conservative, ondemand, userspace, powersave, performance
    current policy: frequency should be within 800 MHz and 1.60 GHz.
                    The governor "conservative" may decide which speed to use
                    within this range.
    current CPU frequency is 800 MHz.
    cpufreq stats: 1.60 GHz:6.40%, 1.60 GHz:0.01%, 1.50 GHz:0.02%, 1.40 GHz:0.02%, 1.30 GHz:0.02%, 1.20 GHz:0.06%, 1.10 GHz:0.03%, 1000 MHz:0.04%, 900 MHz:0.07%, 800 MHz:93.33%  (795)
  analyzing CPU 1:
    driver: acpi-cpufreq
    CPUs which run at the same hardware frequency: 0 1 2 3
    CPUs which need to have their frequency coordinated by software: 1
    maximum transition latency: 10.0 us.
    hardware limits: 800 MHz - 1.60 GHz
    available frequency steps: 1.60 GHz, 1.60 GHz, 1.50 GHz, 1.40 GHz, 1.30 GHz, 1.20 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
    available cpufreq governors: conservative, ondemand, userspace, powersave, performance
    current policy: frequency should be within 800 MHz and 1.60 GHz.
                    The governor "conservative" may decide which speed to use
                    within this range.
    current CPU frequency is 800 MHz.
    cpufreq stats: 1.60 GHz:20.97%, 1.60 GHz:0.02%, 1.50 GHz:0.06%, 1.40 GHz:0.07%, 1.30 GHz:0.10%, 1.20 GHz:0.18%, 1.10 GHz:0.10%, 1000 MHz:0.15%, 900 MHz:0.19%, 800 MHz:78.16%  (424)
  analyzing CPU 2:
    driver: acpi-cpufreq
    CPUs which run at the same hardware frequency: 0 1 2 3
    CPUs which need to have their frequency coordinated by software: 2
    maximum transition latency: 10.0 us.
    hardware limits: 800 MHz - 1.60 GHz
    available frequency steps: 1.60 GHz, 1.60 GHz, 1.50 GHz, 1.40 GHz, 1.30 GHz, 1.20 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
    available cpufreq governors: conservative, ondemand, userspace, powersave, performance
    current policy: frequency should be within 800 MHz and 1.60 GHz.
                    The governor "conservative" may decide which speed to use
                    within this range.
    current CPU frequency is 800 MHz.
    cpufreq stats: 1.60 GHz:20.95%, 1.60 GHz:0.02%, 1.50 GHz:0.11%, 1.40 GHz:0.10%, 1.30 GHz:0.12%, 1.20 GHz:0.32%, 1.10 GHz:0.24%, 1000 MHz:0.25%, 900 MHz:0.38%, 800 MHz:77.51%  (622)
  analyzing CPU 3:
    driver: acpi-cpufreq
    CPUs which run at the same hardware frequency: 0 1 2 3
    CPUs which need to have their frequency coordinated by software: 3
    maximum transition latency: 10.0 us.
    hardware limits: 800 MHz - 1.60 GHz
    available frequency steps: 1.60 GHz, 1.60 GHz, 1.50 GHz, 1.40 GHz, 1.30 GHz, 1.20 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
    available cpufreq governors: conservative, ondemand, userspace, powersave, performance
    current policy: frequency should be within 800 MHz and 1.60 GHz.
                    The governor "conservative" may decide which speed to use
                    within this range.
    current CPU frequency is 800 MHz.
    cpufreq stats: 1.60 GHz:20.89%, 1.60 GHz:0.03%, 1.50 GHz:0.09%, 1.40 GHz:0.11%, 1.30 GHz:0.11%, 1.20 GHz:0.19%, 1.10 GHz:0.15%, 1000 MHz:0.13%, 900 MHz:0.14%, 800 MHz:78.15%  (451)

  My notebook is a Toshiba Z830, I guess all the proper information has
  been submitted to the bug already, otherwise please let me know what
  other information do you need. It would be nice if the final Precise
  release goes out without this issue, as it really will get people a
  very bad impression about Ubuntu because their notebooks will seem to
  be too slow!

  Thanks.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image (not installed)
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  luca      24968 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xc0720000 irq 50'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0269,1179063e,00100100 HDA:80862805,11790001,00100000'
     Controls      : 24
     Simple ctrls  : 11
  Date: Mon Apr 23 23:13:07 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  MachineType: TOSHIBA SATELLITE Z830
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.2.0-23-generic root=UUID=0e8db42e-d125-4bd5-bd3a-2181d1fa3301 ro rootflags=subvol=@ quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-23-generic N/A
   linux-backports-modules-3.2.0-23-generic  N/A
   linux-firmware                            1.79
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/08/2012
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: Version 1.60
  dmi.board.asset.tag: 0000000000
  dmi.board.name: Portable PC
  dmi.board.vendor: TOSHIBA
  dmi.board.version: Version A0
  dmi.chassis.asset.tag: 0000000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: Version 1.0
  dmi.modalias: dmi:bvnTOSHIBA:bvrVersion1.60:bd02/08/2012:svnTOSHIBA:pnSATELLITEZ830:pvrPT22LE-00300GGR:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
  dmi.product.name: SATELLITE Z830
  dmi.product.version: PT22LE-00300GGR
  dmi.sys.vendor: TOSHIBA

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