Subject: Re: kern/24957 (clcs(4) emits "AC97 read fail" errors on IBM
To: =?ISO-8859-1?Q?St=E9phane?= Witzmann <>
From: Jared D. McNeill <>
List: netbsd-bugs
Date: 01/02/2006 14:39:54
On Mon, 2006-01-02 at 18:34 +0100, St├ęphane Witzmann wrote:
> Jared D. McNeill wrote:
> > Is this issue still present with the latest ACPI updates?
> > 
> > Cheers,
> > Jared
> I have seen it on every machine I put the TBSC in, even with 3.99.1x. That
> was with a GENERIC kernel.
> You can make it happen by reinitializing the card many times. I suggest you
> put a full reinit when the device is opened to speed up things (yeah,
> rebooting untils it fails can take some time).

After applying your TBSC patches, I haven't been able to reproduce
either this or your other 'metallic sound' issue on 3.99.10 yet:

  clcs0 at pci0 dev 12 function 0: Cirrus Logic CS4280 CrystalClear
Audio Interface (rev. 0x01)
  clcs0: Turtle Beach Santa Cruz
  clcs0: interrupting at ioapic0 pin 19 (irq 12)
  clcs0: ac97: Crystal CS4297A codec; headphone, 20 bit DAC, 18 bit ADC,
Crystal Semi 3D
  clcs0: ac97: ext id 200<AMAP>
  audio0 at clcs0: full duplex, independent

Note that I'm using a kernel with ACPI support. Full dmesg lives here: