VIA 8235: Bad IRQ after PCM playback and moving the mouse

VIA 8235: Bad IRQ after PCM playback and moving the mouse

[William]

VIA 8235 sound system on a laptop:

I keep getting bad IRQ errors after PCM playback and moving the mouse.
I tried loading via82xx first with dxs_support=1, then with dxs_support=2,
then dxs_support=4 but the same errors happen.

For example, while playing:
 $ aplay -c 2 -f S16_LE -r 22000 music 2216.raw
if I move the mouse, the kernel gives error messages:

   Nov 18 19:55:18 kernel: ACPI: PCI interrupt 0000:00:11.5[C] -> GSI 9 (level, low) -> IRQ 9
   Nov 18 19:55:19 kernel: usbcore: registered new driver snd-usb-audio
   Nov 18 19:55:34 kernel: spurious 8259A interrupt: IRQ7.
   Nov 18 19:55:47 kernel: irq 11: nobody cared!
   Nov 18 19:55:47 kernel:  __report_bad_irq+0x17/0x7f
   Nov 18 19:55:47 kernel:  note_interrupt+0x5d/0x3c
   Nov 18 19:55:47 kernel:  do_IRQ+0x71/0xe2
   Nov 18 19:55:47 kernel:  common_interrupt+0x18/0x20
   Nov 18 19:55:47 kernel:  default_idle+0x21/0x35
   Nov 18 19:55:47 kernel:  cpu_idle+0x1d/0x22
   Nov 18 19:55:47 kernel:  start_kernel+0x10b/0x13a
   Nov 18 19:55:47 kernel: handlers:
   Nov 18 19:55:47 kernel:  (usb_hcd_irq+0x0/0xed)
   Nov 18 19:55:47 kernel: Disabling IRQ #11

The mouse is now disabled. The pointer can moved only by using the touchpad.

 modprobe.conf has:

   alias char-major-14-* soundcore
   alias char-major-116-* snd
   options snd major=116 cards_limit=1

   alias snd-card-0 snd-via82xx
   options snd-via82xx enable=1 dxs_support=1
   alias snd-card-0 snd-via82xx
   alias sound-slot-0 snd-card-0
   alias sound-service-0-0 snd-mixer-oss
   alias sound-service-0-3 snd-pcm-oss
   alias sound-service-0-12 snd-pcm-oss
   alias /dev/dsp1 snd-pcm-oss

Any suggestions please?

William


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Re: VIA 8235: Bad IRQ after PCM playback and moving the mouse

[William]

> VIA 8235 sound system on a laptop:
> 
> I keep getting bad IRQ errors after PCM playback and moving the mouse.

kernel 2.6.8.1 modularised with soundcore but in-kernel alsa disabled
alsa-driver-1.0.7rc2

If APM BIOS is enabled in kconfig, the laptop will not boot at all
so I disabled it and am using ACPI modules instead.
The laptop has an external USB mouse and a touchpad.
If the sound modules are loaded but PCM is unused,
then the mouse and the touchpad can both work ok.
However, after ALSA PCM has been used, the IRQ errors happen every time
I move the pointer using either the external mouse or the touchpad.
Why is this happening?

William


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This SF.Net email is sponsored by: InterSystems CACHE
FREE OODBMS DOWNLOAD - A multidimensional database that combines
robust object and relational technologies, making it a perfect match
for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8