Re: Re: [Alsa-user] fm801 driver status?

[Takashi Iwai <tiwai@suse.de>]

At Fri, 13 Dec 2002 19:24:49 +0100,
Friedrich Ewaldt wrote:
> 
> Takashi Iwai wrote:
> 
>  >>lspci -n output:
>  >>
>  >>00:0b.0 Class 0401: 1319:0801 (rev a0)
>  >>00:0b.1 Class 0980: 1319:0801 (rev a0)
>  >>
>  >>
>  >
>  >thanks, could you try the attached patch?
>  >at least, the weird messages for allocation of invalid i/o ports
>  >should disappear.  not sure whether this cures the lock-up problem,
>  >though.
>  >
>  >
>  >Takashi
>  >
>  >
> done. The error in /var/log/messages doesn't appear any longer (I only
> get these 'sharing IRQ ...' messages). Thanks! But the system still
> locks up when stopping playback :-(

to be sure, could you elaborate the symptom again and the detail of
your system (kernel version, applied patches, ALSA version)?
especially, please check the following:

- loading the module and unloading it immediately works?
- the port and irq number are correct, i.e. match with the resources
  listed on lspci?
- playback (via aplay) works?  does the system hang up at the start,
  during the playback or at the stop?
- during the playback, does the count in /proc/interrupts increases?
  (check with another terminal)

a typical reason of such a hang up is either the wrong spinlocks,
unexpected infinite loops in the driver code, or the interrupt
storms.  if it's the interrupt storm, then it can be related with the
hardware, often motherboard chipset, or BIOS version.
or, could it be because of ACPI?  did you apply it?


ciao,

Takashi


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