Re: 2.6.12 sound problem

[Stephen Clark]

Andrew Morton wrote:

> (Please do reply-to-all when dealing with kernel stuff)
>
> Stephen Clark <stephen.clark@xxxxxxxxxxxxx> wrote:
>  
>
> > Takashi Iwai wrote:
> >
> >    
> >
> > > At Tue, 26 Jul 2005 19:35:55 -0400,
> > > Stephen Clark wrote:
> > >
> > >
> > >      
> > >
> > > > Hello List,
> > > >
> > > >
> > > > I recently upgraded my laptop, HP Pavilion N5430, from a 2.4.21 kernel
> > > > to 2.6.12. As a result of
> > > > doing this my sound no longer works correctly. It plays the same thing
> > > > repeatedly some number
> > > > of times - if it plays at all.
> > > >
> > > > Any ideas on how to debug this would be appreciated.
> > > >
> > > > Additional info I don't see any interrupts in /proc/interrupts for the
> > > > Allegro which is on int 5.
> > > > I just tried the same laptop with knoppix and a 2.4.27 kernel and sound
> > > > works great and I do
> > > > see interrupts for Allegro on int 5.
> > > >   
> > > >
> > > >        
> > > The irq problem is likely related with ACPI.
> > > Try to boot once with pci=noacpi.
> > >
> > >
> > > Takashi
> > > -
> > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > > the body of a message to majordomo@xxxxxxxxxxxxxxx
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> > > Please read the FAQ at  http://www.tux.org/lkml/
> > >
> > >
> > >
> > >      
> > Hi Takashi,
> >
> > I have boot the 2.6.12 kernel with acpi=off pci=noacpi,usepirqmask or I
> > get a panic or a hang.
> >    
>
> It's just really awful that 2.4 simply worked and 2.6 requires a sprinkle
> of obscure kernel parameters.  I shudder to think how long it took you to
> work them out.
>
>  
>
> > I don't have to do this with 2.4.27, anybody know why?
> >
> >    
>
> Perhaps you could send the `dmesg -s 1000000' output?
>
>  
Hi Andrew,

Thanks for the response.

I found a better solution to my problem with my HP N5430 laptop over on 
the alsa-devel list, my sound had quit working also. The new
solution, which was pointed out to me by Henry Yuan was to boot with 
lapic. I had noticed in the dmesg output that a lapic existed but was 
turned off by the bios, and a pseudo local apic was being used, this 
caused problems with APCI and my sound.

If you would still like the dmesg I would be glad to send it.

Steve
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