Re: [RFC PATCH] thinkpad-acpi: Improve hardware volume controls

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On Thu, May 12, 2011 at 11:34:07AM -0400, Andrew Lutomirski wrote:
> On Thu, May 12, 2011 at 11:30 AM, Bruce Hill <bruce@xxxxxxxxxxxxxxxx> wrote:
> > On Thu, May 12, 2011 at 10:16:12AM -0400, Andrew Lutomirski wrote:
> >> It's /sys/firmware/acpi/tables/DSDT
> >>
> >> If you're feeling fancy you can copy it somewhere and run iasl -d on
> >> it, but the binary version will do.
> >>
> >> --Andy
> >
> > root@jeremiah ~ #  iasl -d /sys/firmware/acpi/tables/DSDT
> >
> > Intel ACPI Component Architecture
> > AML Disassembler version 20090123 [May 12 2011]
> > Copyright (C) 2000 - 2009 Intel Corporation
> > Supports ACPI Specification Revision 3.0a
> >
> > Loading Acpi table from file /sys/firmware/acpi/tables/DSDT
> > Could not get table from the file
> >
> > http://paste.pocoo.org/raw/387604/
> 
> I think that killed it because it's binary.
> 
> >
> > Apparently something needs to be done so that it's human readable? Have
> > never used iasl and you need to 'hold my hand'. ;)
> 
> Just copy the file to a writable directory and then run iasl -d.  iasl
> will create a new file with the extension .dsl, which it can't do in
> /sys.
> 
> --Andy

root@jeremiah /home/mingdao # rsync -av /sys/firmware/acpi/tables/DSDT .
sending incremental file list

sent 29 bytes  received 12 bytes  82.00 bytes/sec
total size is 0  speedup is 0.00
root@jeremiah /home/mingdao # chown mingdao.mingdao DSDT 
root@jeremiah /home/mingdao #  iasl -d DSDT

Intel ACPI Component Architecture
AML Disassembler version 20090123 [May 12 2011]
Copyright (C) 2000 - 2009 Intel Corporation
Supports ACPI Specification Revision 3.0a

Loading Acpi table from file DSDT
Could not get table from the file
root@jeremiah /home/mingdao # l *.dsl
ls: cannot access *.dsl: No such file or directory
root@jeremiah /home/mingdao # l DSDT 
-r-------- 1 mingdao mingdao 0 May 12 10:13 DSDT

or...

root@jeremiah /home/mingdao # rsync -av /sys/firmware/acpi/tables/DSDT .
sending incremental file list

sent 32 bytes  received 15 bytes  94.00 bytes/sec
total size is 0  speedup is 0.00
root@jeremiah /home/mingdao # chmod 644 DSDT 
root@jeremiah /home/mingdao # l DSDT 
-rw-r--r-- 1 root root 0 May 12 10:13 DSDT
root@jeremiah /home/mingdao #  iasl -d DSDT

Intel ACPI Component Architecture
AML Disassembler version 20090123 [May 12 2011]
Copyright (C) 2000 - 2009 Intel Corporation
Supports ACPI Specification Revision 3.0a

Loading Acpi table from file DSDT
Could not get table from the file
root@jeremiah /home/mingdao # l *.dsl
ls: cannot access *.dsl: No such file or directory

Sorry, I'm clueless.

Bruce
-- 
May the Lamb that was slain receive the reward of His suffering!

"Experience is a hard teacher because she gives the test first, the
lesson afterward. But properly learned, the lesson forever changes
the man."

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