Re: Bad IRQs from using pcm in alsa-driver-1.0.7

[Takashi Iwai <tiwai@suse.de>]

At Fri, 19 Nov 2004 16:28:47 GMT,
William wrote:
> 
> Using ALSA PCM always disables the IRQ for my mouse (USB Logitech wheelmouse).
> Is this a known problem?  
> 
> I'm using alsa-*1.0.7 on a laptop with a VIA-8235 sound system.
> Whenever I use aplay, the kernel disables IRQ 11 ("kernel: Disabling IRQ 11")
> leaving the mouse disabled though the touchpad does still work
> and there are kernel error messages ("nobody cared!  __report_bad_irq etc" ).
> 
>    $ grep ERR /proc/interrupts
>    ERR:     33
> 
> Every time this happens I have to reboot to get IRQ 11 working again
> so I can use the mouse again.
> The kernel does not disable IRQ 11 if I use only ALSA MIDI.
> 
> Is there a fix?

Which kernel version?  It smells like a general IRQ routing
problem.  What happens when you play with acpi boot option?


Takashi


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