Re: Acer Aspire 9813WKMI fan runs all the time after suspend to ram

[Thomas Renninger <trenn@suse.de>]

On Mon, 2008-05-05 at 21:49 +0200, JM wrote:
> >
> > Notebook fan runs all the time after suspend to ram.
> >
> 
> Workaround:
> 
> Original DSDT > http://aceracpi.googlecode.com/svn/trunk/dsdt/acer/aspire/9810.dsl
> 
> Normalize behavior of fan on cold boot and wakeup:
> Store (0x46, SMIF)
> Store (0x00, TRP0)
> But in _WAK is:
> If (LAnd (DTSE, MPEN))
> and that is not true.
> 
> --- a/dsdt.dsl
> +++ b/dsdt.dsl
> @@ -462,11 +462,11 @@
>          Store (0x00, PO80)
>          If (LEqual (Arg0, 0x03))
>          {
> -            If (LAnd (DTSE, MPEN))
> -            {
> +            // If (LAnd (DTSE, MPEN))
> +            // {
>                  Store (0x46, SMIF)
>                  Store (0x00, TRP0)
> -            }
> +            // }
>          }
Could you find out whether some osi set variable is involved.
(The ones that get set when BIOS (in DSDT) calls e.g.
osi("Windows 2006"))
Something like:
if (osi("Windows 2006"))
    Store(1, DTSE)
Maybe you find out what the DTSE or MPEN variable is good for, is set by
some _INI function of a specific device or whatever?

Best you create a bug for that at bugzilla.kernel.org (and add me to CC
or post the bug no).
Full (or none) fan is a real blocker bug that should generally be
resolved.

Does this BIOS expose an ACPI fan device correctly? If yes is:
echo 1 >/proc/acpi/fan/*/state
or:
echo 0 >/proc/acpi/fan/*/state
echo 1 >/proc/acpi/fan/*/state
echo 0 >/proc/acpi/fan/*/state
or whatever also a workaround?

Thanks,

   Thomas

> 
>          If (LOr (LEqual (Arg0, 0x03), LEqual (Arg0, 0x04)))
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