How to enable bios-disabled soundcard?

How to enable bios-disabled soundcard?

[Meelis Roos]

Context: IBM X20 laptop with integrated PCI CS4281 soundcard. Loading 
snd_cs4281 gives these messages and registers no alsa device:

ACPI: PCI interrupt for device 0000:00:0b.0 disabled
CS4281: probe of 0000:00:0b.0 failed with error -5

Error -5 seems to be -EIO.

There is no option ib bios to enable/disable the soundcard and the bios 
is almost the latest (2.23, latest 2.25 fixes only unrelated things by 
changelog).

lspci identifies the card as follows (pci ID is the same as in the 
driver):
0000:00:0b.0 Multimedia audio controller: Cirrus Logic Crystal CS4281 PCI Audio (rev 01)

I tried pci=routeirq. It distributed the interrupts differently but this 
problem did remain.

I tried acpi=ogg and the ACPI line disappeared but probe failure stayed.

So how can I enable the soundcard?

-- 
Meelis Roos (mroos@linux.ee)

Re: How to enable bios-disabled soundcard?

[Andreas Mohr]

Hi,

[CC'ing ALSA list]

On Thu, May 18, 2006 at 05:09:47PM +0300, Meelis Roos wrote:
> Context: IBM X20 laptop with integrated PCI CS4281 soundcard. Loading 
> snd_cs4281 gives these messages and registers no alsa device:
> 
> ACPI: PCI interrupt for device 0000:00:0b.0 disabled
> CS4281: probe of 0000:00:0b.0 failed with error -5
> 
> Error -5 seems to be -EIO.
> 
> There is no option ib bios to enable/disable the soundcard and the bios 
> is almost the latest (2.23, latest 2.25 fixes only unrelated things by 
> changelog).

The mail subject most likely is wrong, since the IRQ message above
doesn't suggest a BIOS issue at all,
since the message is most likely a result of calling snd_cs4281_free()
in failure path, which disables this IRQ again.

> lspci identifies the card as follows (pci ID is the same as in the 
> driver):
> 0000:00:0b.0 Multimedia audio controller: Cirrus Logic Crystal CS4281 PCI 
> Audio (rev 01)
> 
> I tried pci=routeirq. It distributed the interrupts differently but this 
> problem did remain.

I believe that it's a simple hardware mismatch failure in the main probe
function of this driver, nothing else.

> So how can I enable the soundcard?

The best way to find out is to edit snd_cs4281_probe() and add snd_printk()s
at all error paths to find the one which actually fails.

Andreas Mohr

Re: [Alsa-devel] Re: How to enable bios-disabled soundcard?

[Takashi Iwai]

At Thu, 18 May 2006 17:15:20 +0200,
Andreas Mohr wrote:
> 
> Hi,
> 
> [CC'ing ALSA list]
> 
> On Thu, May 18, 2006 at 05:09:47PM +0300, Meelis Roos wrote:
> > Context: IBM X20 laptop with integrated PCI CS4281 soundcard. Loading 
> > snd_cs4281 gives these messages and registers no alsa device:
> > 
> > ACPI: PCI interrupt for device 0000:00:0b.0 disabled
> > CS4281: probe of 0000:00:0b.0 failed with error -5
> > 
> > Error -5 seems to be -EIO.
> > 
> > There is no option ib bios to enable/disable the soundcard and the bios 
> > is almost the latest (2.23, latest 2.25 fixes only unrelated things by 
> > changelog).
> 
> The mail subject most likely is wrong, since the IRQ message above
> doesn't suggest a BIOS issue at all,
> since the message is most likely a result of calling snd_cs4281_free()
> in failure path, which disables this IRQ again.
> 
> > lspci identifies the card as follows (pci ID is the same as in the 
> > driver):
> > 0000:00:0b.0 Multimedia audio controller: Cirrus Logic Crystal CS4281 PCI 
> > Audio (rev 01)
> > 
> > I tried pci=routeirq. It distributed the interrupts differently but this 
> > problem did remain.
> 
> I believe that it's a simple hardware mismatch failure in the main probe
> function of this driver, nothing else.
> 
> > So how can I enable the soundcard?
> 
> The best way to find out is to edit snd_cs4281_probe() and add snd_printk()s
> at all error paths to find the one which actually fails.

The error EIO comes only from snd_cs4281_chip_init(), and you must
have a corresponding error message.

There are some fixes in 2.6.17 tree regarding cs4281.  Give it a try.


Takashi

Re: [Alsa-devel] Re: How to enable bios-disabled soundcard?

[Meelis Roos]

>> The best way to find out is to edit snd_cs4281_probe() and add snd_printk()s
>> at all error paths to find the one which actually fails.
>
> The error EIO comes only from snd_cs4281_chip_init(), and you must
> have a corresponding error message.
>
> There are some fixes in 2.6.17 tree regarding cs4281.  Give it a try.

Yes! Todays 2.6.17-rc4+git works fine with this soundcard. Thanks!

-- 
Meelis Roos (mroos@linux.ee)