Re: APM realy sucks on 2.6.x

[Sebastian Kloska]

Pavel Machek wrote:
> Hi!
>
>
> > My impression is that APM is slowly degenerating while ACPI is not
> > (yet ?) able to fill the gap. The suspend feature of ACPI is stated to
> > be dangerous and experimental and does not work for me at all.
>
>
> That sounds about right.
>
>
> > After all this bashing...
> >
> > Is there anyone out there who has the same experiences ?
> >
> > Is there a workaround ?
> >
> > Is it possible to somehow downgrade APM in the 2.6 kernel
> > to the 2.4.x state ?
> >
> > How could one debug this kind of missbehaviour ? Where do
> > I have to look for potential miss configurations of the system ?
> >
> > I'm really willing  to help the APM developers to track down this bug
> > but don't have a clue how to debug this kind stuff.
>
>
> What APM developers? There are none as far as I know.


  Hmmm ... So once again the Tooth Fairy and Santa Claus :-) ?

  At least a

  grep '<.*@' /usr/src/linux-2.6.6/arch/i386/kernel/apm.c | sed 's/.*<//' | sed 's/>.*//'

  gives me:

<snip>
Ulrich.Windl@xxxxxxxxxxxxxxxxxxxx
jtoth@xxxxxxxxxxxxx
gaudet@xxxxxxxxxx
cananian@xxxxxxxxxxxxxxxxxxxx
echter@xxxxxxxxxxxxxxxxxxxxxxxxx
rankinc@xxxxxxxxxxxxx
cmiller@xxxxxxxxxxxxx
rgooch@xxxxxxxxxxxxx
rgooch@xxxxxxxxxxxxx
laslo@xxxxxxxxxxxxxx
ross@xxxxxxxxxxxxxx
borislav@xxxxxxxxxxxxxxxxxxxx
sitta@xxxxxxxxxxxx
teras@xxxxxxxxxxx
Walter.Hofmann@xxxxxxxxxxxxxxxxxxxxxxxxxxx
skawina@xxxxxxxxxxxxx
rusty@xxxxxxxxxxxxxxx
gis88564@xxxxxxxxxxxxxxx
jima@xxxxxxx
alan@xxxxxxxxxxxxxxxxxxx
jima@xxxxxxx
andy_henroid@xxxxxxxxx
pavel@xxxxxxx
andy_henroid@xxxxxxxxx
zlatko@xxxxxxxx
crutcher+kernel@xxxxxxxxxxxxxx
arjanv@xxxxxxxxxx
marc@xxxxxxx
alan@xxxxxxxxxx
alan@xxxxxxxxxx
jdthood@xxxxxxxx
chief@xxxxxxxxxxx
ast@xxxxxxxx
rmk@xxxxxxxxxxxxxxxx
jdthood@xxxxxxxx
reese@xxxxxxx
neale@xxxxxxxxxxxxxxxx
cmiller@xxxxxxxxxxxxx
chen@xxxxxxxxxxxxxx
</snip>

This is pretty much for no one. And I guess you knew since you're on
the list yourself. But I think you're right when meaning
that there is not much of active maintenance anymore. Which at
least I find a little bit discouraging when looking of the state
of the ACPI support.


> Try removing calls to device_* in apm.c. Better yet become APM
> developer.

  It seems like I'm on my way to do so (still reluctantly). As I stated
 in my previous mails I'm not born as a hardware/BIOS hacker (more the
 application C++/Java stuff) but I'm willing to learn. When I'm
 grown up I definitely want to be linux kernel hacker :-) ...

  Currently I ripped down the 2.6.6 kernel to almost nothing
 and add one module after the other checking for proper
 suspend/resume behavior....

  The most suspicious candidates on my list are currently  the
 USB-UHCI driver and the ALSA sound system, which is my #1 candidate
 since it has not been an integral part of the 2.4.x (x<=20) kernels.


 So if anybody out there could give me guidance on how the apm code
 might interact with the ALSA sound system it would be highly
 appreciated....

 Thanks

 Sebastian



> 							Pavel
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