Inspiron 8200 and the CS4205

Inspiron 8200 and the CS4205

[Rodney Gordon II]

..main reason for joining this list, is it ever going to be fixed? :)

Here is what i've learned about all my experiences so far with the
Inspiron 8200 and the CS4205:

My kernel right now, it works fine for a few minutes then starts playing
extremely choppy.. until I remove the module. Odd thing, if I turn APM
off, this still happens but not as quick.

And, when device is opened or closed, loud pops and clicks that I am
pretty sure aren't good for my speakers at loud volumes happen..


I'm at a loss kinda here -- the oss/free drivers play audio but thats
about it. If anyone has got this working or can help me, I'd appreciate
it alot..

I would help with any developmental issues but my knowledge in coding
things related to sound drivers are extremely lacking :/

-r

-- 
Rodney "meff" Gordon II - meff@pobox.com

-->
You will gain money by a fattening action.


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Re: Inspiron 8200 and the CS4205

[Takashi Iwai]

At Tue, 10 Sep 2002 13:40:38 -0500,
Rodney Gordon II wrote:
> 
> Here is what i've learned about all my experiences so far with the
> Inspiron 8200 and the CS4205:

which driver?  maestro3 or intel8x0?
and which kernel are you using?


Takashi


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Re: Inspiron 8200 and the CS4205

[Stuffed Crust]

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On Thu, Sep 12, 2002 at 06:00:21PM +0200, Takashi Iwai wrote:
> > Here is what i've learned about all my experiences so far with the
> > Inspiron 8200 and the CS4205:
> 
> which driver?  maestro3 or intel8x0?
> and which kernel are you using?

I have similar problems with my Inspiron 4100.

It has an ICH3 (i830M -- intel8x0) and a CS4205 codec.

Basically, some apps stutter immediately on playback (kinda like the
helicopter noise he was describing), and others start okay, but sometimes
start and stop stuttering seemingly at random in mid-stream.

in particular, mpg321 (via libao) seems to do this fairly often, while
ogg123 (also via libao) seems to be immune.  SDL apps (using the alsa09
backend) are intermittent, as are a couple of my own creations that hook
into alsa directly.

This has been fairly consitent across multiple ALSA and kernel releases,
including alsa 0.9.0rc3 and current cvs, and kernel 2.4.20-pre5 that I'm
running right now.

Though interestingly enough, if I switch the apps to use oss emulation
instead of native alsa output, things seem to work fine.

 - Pizza
-- 
Solomon Peachy                                   pizza@f*cktheusers.org
I'm not broke, but I'm badly bent.                         ICQ #1318344
Patience comes to those who wait.                         Melbourne, FL
               Quidquid latine dictum sit, altum viditur

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Re: Inspiron 8200 and the CS4205

[Takashi Iwai]

At Thu, 12 Sep 2002 13:16:36 -0400,
Stuffed Crust wrote:
> 
> [1  <text/plain; us-ascii (quoted-printable)>]
> On Thu, Sep 12, 2002 at 06:00:21PM +0200, Takashi Iwai wrote:
> > > Here is what i've learned about all my experiences so far with the
> > > Inspiron 8200 and the CS4205:
> > 
> > which driver?  maestro3 or intel8x0?
> > and which kernel are you using?
> 
> I have similar problems with my Inspiron 4100.
> 
> It has an ICH3 (i830M -- intel8x0) and a CS4205 codec.
> 
> Basically, some apps stutter immediately on playback (kinda like the
> helicopter noise he was describing), and others start okay, but sometimes
> start and stop stuttering seemingly at random in mid-stream.
> 
> in particular, mpg321 (via libao) seems to do this fairly often, while
> ogg123 (also via libao) seems to be immune.  SDL apps (using the alsa09
> backend) are intermittent, as are a couple of my own creations that hook
> into alsa directly.
> 
> This has been fairly consitent across multiple ALSA and kernel releases,
> including alsa 0.9.0rc3 and current cvs, and kernel 2.4.20-pre5 that I'm
> running right now.
> 
> Though interestingly enough, if I switch the apps to use oss emulation
> instead of native alsa output, things seem to work fine.

i guess this is somehow different phenomenon from the original post.
perhaps this has something to do with the hardware parameters,
especially period size.  could you check
/proc/asound/card0/pcm0p/sub0/hw_status (and others) at each case to
compare which parameters are used?


Takashi


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Re: Inspiron 8200 and the CS4205

[Takashi Iwai]

At Sat, 14 Sep 2002 14:01:58 -0500,
Rodney Gordon II wrote:
> 
> Nahh.. the 4205 does the same thing in my I8200 -- and this has been
> through multiple releases also.
> 
> I have noticed that in CVS, the open/close pops and clicks are gone and
> it seems to try harder not to start chopping out but still does
> eventually and nothing can fix it before a rmmod.
> 
> Thanks for looking into this, any help would be greatly appreciated..
> 
> This happens for me using native and pcm-oss emu.

hmm... the question is which goes wrong, ich core or ac97 codec.
but anyway this may be involved with some power management.

sorry, so far, no clear idea what's wrong there.
i will take a deeper look at the spec sheet.


ciao,

Takashi


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PATCH: Via82xx driver

[Sander van Leeuwen]

Hi,

Below is a patch that fixes heap corruption in the via driver if the app uses a large nr of periods (> 128).
dev->idx_table is a snd_via_sg_table array, not an integer array.


--- via82xx.c	Fri Sep 13 13:22:46 2002
+++ via82xx.cn	Thu Sep 19 14:41:56 2002
@@ -217,7 +217,7 @@
 			return -ENOMEM;
 	}
 	if (! dev->idx_table) {
-		dev->idx_table = kmalloc(sizeof(unsigned int) * VIA_TABLE_SIZE, GFP_KERNEL);
+		dev->idx_table = kmalloc(sizeof(struct snd_via_sg_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 		if (! dev->idx_table)
 			return -ENOMEM;
 	}




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Re: PATCH: Via82xx driver

[Takashi Iwai]

At Thu, 19 Sep 2002 14:50:06 +0200 (CDT),
Sander van Leeuwen wrote:
> 
> Hi,
> 
> Below is a patch that fixes heap corruption in the via driver if the app uses a large nr of periods (> 128).
> dev->idx_table is a snd_via_sg_table array, not an integer array.

thanks, fixed now on cvs.


Takashi


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Re: Inspiron 8200 and the CS4205

[Sebastian Hack]

Hi all,

I have the same Problem as Rodney Gordon II and Stuffed Crust. I also
have clicks and pops in both native alsa and oss playback. Using jack,
enlarging the period size has positive effects but does not eliminate
the problem.

I found one thing: The Inspiron 8200's BIOS routes all devices (USB,
VGA, Ethernet, Sound) to IRQ 11 (at least mine does). Windows XP
leaves this untouched, except the IRQ for the CS4205, which is set to
5. I don't know why, but perhaps, this could hint on a IRQ sharing
problem with the CS4205.

On the other hand, the i810_audio linux kernel sound driver works
quite fine with IRQ 11, but I think that we all agree, that this is
not an alternative to alsa :-)

Regards,
Sebastian


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