Re: 2.6.12 sound problem

[Andrew Morton <akpm@osdl.org>]

(Please do reply-to-all when dealing with kernel stuff)

Stephen Clark <stephen.clark@earthlink.net> 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
> >-
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> >
> >  
> >
> 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?