Re: Fixing my DSDT. Do I have to learn another language?

[Ron Arts <ron.arts-aH2ABhMBJl7z+pZb47iToQ@public.gmane.org>]

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Bruno Ducrot wrote:
> On Sun, Dec 11, 2005 at 10:22:57AM +0100, Ron Arts wrote:
> 
>>Hi,
>>
>>I own a Uniwill 255II3, and occasionally my system thinks the battery is 
>>almost empty
>>(XP has the same problem on this laptop BTW).
>>

[ snip ]

> 
>>Maybe someone can give me a hint on how to
>>handle it? I made it available here: http://www.netland.nl/download/dsdt.dsl
>>(temporary link).
> 
> 
> The problem is here:
> 
>    2358                     Name (BFB0, Package (0x04)
>    2359                     {
>    2360                         0x00,
>    2361                         0xFFFFFFFF,
>    2362                         0x1034,
>    2363                         0x2A30
>    2364                     })
>    2365                     Method (_BST, 0, NotSerialized)
>    2366                     {
>    2367                         Store ("BST Start", Debug)
>    2368                         Store (\_SB.PCI0.SBRG.EC0.XST0, Index (BFB0, 0x00))
>    2369                         Store (\_SB.PCI0.SBRG.EC0.XST2, Index (BFB0, 0x02))
>    2370                         Store (\_SB.PCI0.SBRG.EC0.XST3, Index (BFB0, 0x03))
>    2371                         Store ("BST End", Debug)
>    2372                         Return (BFB0)
>    2373                     }
> 
> and a timeout happens on one of those lines: 2368, 2369 or 2370.
> The \_SB.PCI0.SBRG.EC0.XST0 (XST1...) are defined under an Embedded
> Controller region.
> The fault come therefore from the EC.  I don't know however if this
> is due to a bug under Linux, or under the EC's firmware.  It may be
> possible that a bios upgrade (including an upgrade to the EC firmware)
> may fix this problem.  Another quick an dirty hack that you may want
> to try is to increase the timeout things into
> 
> drivers/acpi/ec.c
> 
> for example, try to set 100 instead of 50 for ACPI_EC_DELAY
> #define ACPI_EC_DELAY           50      /* Wait 50ms max. during EC ops */
> 
> and so on...
> 

Thanks a lot for this knowledgale answer, I will definitely try this.

>>I am disappointed by the fact that these Intel laptops continuously spin up
>>their cooling fan, this is very annoying. People I talk to seem to take this
>>for granted, but The iBooks I have used to far were totally quiet, and the
>>fan almost never needed to kick in. So I am trying every trick in the book
>>to let it run cooler.
> 
> 
> It's not true.  I saw the fan of my iBook going on, erm, when I wrote a
> driver to control that functionality...
> 

:-)

Ron

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