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Thread: Satellite U500 and CPU Fan issue on Ubuntu 9.04

  1. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #21
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    Dec 2009
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    1
    I would like to ask some things.

    0) How did you update bios ? 1.9 version is in a self extracting exe, not in iso or some other image file.
    0) I have Xubuntu 9.10 and have acpi.nopower-off=1 in menu.lst. The temperature is around 45-50 C so the problem of overheating has been solved but my system doesn't find any sound card and i can't activate ATI/AMD propriatary drivers. Does bios update solves those problems?, Did anyone else had the same problems ?

  2. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #22
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    Sep 2009
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    16
    Hello Harry,

    I've recently installed Ubuntu 9.10 64 bits version on my U500-11C. I confirm that using acpi.power_nocheck=1 kernel option completely removes the CPU fan issue and the overheat is gone.

    Regarding the problems you have,
    I don't understand why you cannot activate ATI proprietary drivers, since I successfully activated them on Ubuntu.
    You can have then two reasons : it is a bug on Xubuntu, or you don't have any access to internet (since they need to be downloaded). It is the same for your sound issue. On my Satellite laptop, I had sound directly from the install source without any manipulation.

    It might be a specific problem of Xubuntu. Why don't you use Ubuntu ?
    Did you install from the Desktop or from the alternate source.
    Beware that the alternate install doesn't have the same sources list as the desktop one.
    I would suggest at least that you install from the desktop source of Xubuntu if you didn't do it.

    Regards

  3. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #23
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    Dec 2009
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    1
    Hello,

    I started using my Toshiba U500-ST6322 (configurable model from Toshiba's website) two days ago, and have been thinking to try out Linux this time, so these posts will be helpful.

    A noticeable issue I am having with the laptop for now is the same one CanisMajor was having - when my fan goes on it is so loud that it sounds like there is vacuum cleaner working in the background. Although I've had enough of it, my 6-yr old Dell has a quieter fan. I'm a little surprised considering the Toshiba is a brand new machine. The noise is very loud and I doubt I'll be able to eventually tune it out.

    It would be a hassle, and I would feel silly, returning the laptop, so I wonder if anyone has experienced the same problem and if there are any suggestions?

    Thanks!

  4. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #24
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    Join Date
    Sep 2009
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    16
    Hi all,

    Just a few words to tell you that Ubuntu 10.04 LTS still needs acpi.power_nocheck=1 in kernel command line to let CPU Fan work properly, even if you install ATI drivers from the vendor. I've seen on other forums that possibly kernel version 2.6.35 would help fixing this issue since it would handle better GPU power management. We will see...

    Have fun with your Toshiba Satellite laptop on Linux !

  5. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #25
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    Join Date
    Jun 2010
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    30
    It's not an issue of Ubuntu needing special parameters to let ACPI (power saving) work properly on laptops.

    The source of the problem is that some laptops come with bad DSDT (ACPI) tables that are necessary for the operating system to perform proper power saving.

    To see whether you are affected, you can extract those DSDT tables and try to recompile them. If they compile fine, most probably your laptop is good.

    1. To extract your DSDT tables, run

    sudo cat /proc/acpi/dsdt > dsdt.dat

    2. Install the IASL tools (tools from Intel that manage those DSDT tables; manufacturers use these tools.

    sudo apt-get install iasl

    3. Decompile the dsdt.dat file

    iasl -d dsdt.dat

    This produces dsdt.dsl which is the 'source' code of the ACPI functions.

    4. Try to recompile and observe for any errors,

    iasl -tc dsdt.dsl

    Observe any errors here.

    For more, see http://ubuntuforums.org/showthread.php?t=1036051
    For these issues it is important to complain to the vendor.

  6. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #26
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    Join Date
    Sep 2009
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    16
    Hello Tarafrog,

    I've tried DSDT export and compile as you suggest, but no errors appear. Are you sure this would fix any acpi issue ?

  7. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #27
    Beginner
    Join Date
    Aug 2009
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    2
    Hi,
    I think i fixed the fan issue with my U500
    there was mistakes in the dsdt : the fanX status always return ON so linux never turned on them.

    now Fan's levels start accordingly to their trip point and you can monitor them with yacpi cmd line tool.

    i hope this will work for you too
    i have done this on debian , i integrate the dsdt.hex into the kernel (need recompile)
    on ubuntu it seems easier to just add the dsdt to initramfs.

    the .dsl still contains 1 error when you compile with iasl but i don't know how to correct it, it seems harmless though

    DSDT: [u500-dsdt.zip|http://vanoven.free.fr/toshiba/u500-dsdt.zip]


    PS: sorry for my english :p

    Message was edited by: vanoven

  8. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #28
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    Join Date
    Sep 2009
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    16
    Thanks Vanoven. I've tried your fix on my U500-11C under Windows 7 64 bits (didn't have enough time to test under Ubuntu). It's interesting because fan speed regulation seems more efficient now. From my point of view, it show that this laptop bios is buggy. This is odd, since Toshiba is part of the ACPI consortium. I will try as soon as possible on Ubuntu a post a new message with my feedback.

  9. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #29
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    Join Date
    Jan 2011
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    2
    I can confirm than Vanoven DSDT fixed the fan problem on my Toshiba U500-119.

    Thanks A LOT for this, you really made something great for the Ubuntu 10 users struggling with their Toshiba !

  10. Re: Satellite U500 and CPU Fan issue on Ubuntu 9.04
    #30
    Beginner
    Join Date
    Feb 2011
    Posts
    2
    Hi there. If the fix works, can some of you raise the issue with the kernel developers and the Toshiba Support? So that, maybe, the might include the fix in the next releases. I've been struggling with this issue for more than a year and I am fed up. If I had the money, I'd throw this rubbish laptop away.

    I understand that the problem is with the laptop and not with the linux kernel. However, I don't enough time to compile a new kernel so I'd like the fix to be included in the next releases...

    Thank you very much,
    Donato

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