Re: [LAU] Hello and configuring audio

On Tuesday 08 January 2008, M-.-n wrote:
> Hi Flo,
>
> > The audio devices in many notebooks are a bit problematic.
>
> Yeah.. I guess so. Although I guess external usb devices should be ok.

Yes, they have their own bag of problem though ;)

> > Please let us see the output of
> >
> > lspci -v
>
> 00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
> High Definition Audio Controller (rev 04)
> Subsystem: ASUSTeK Computer Inc. Unknown device 82a1
> Flags: bus master, fast devsel, latency 0, IRQ 5
> Memory at f7eb8000 (64-bit, non-prefetchable) [size=16K]
> Capabilities: <access denied>

I think intel ICH is one of the more problematic chipsets. Using a program
where you have tight control over setting the audio interface parameters you
could find a set of working ones and then try to get your other programs to
use similar settings..

Things to try out would be:

a] different sampling rates [my first guess would be that 48khz works best]
b] opening the audio device playback only
c] use a perdiod sizo between 256 and 1024 and rather many periods..

> CPU0
> 0: 3252114 XT-PIC-XT timer
> 1: 44971 XT-PIC-XT i8042
> 2: 0 XT-PIC-XT cascade
> 3: 178743 XT-PIC-XT uhci_hcd:usb1, ehci_hcd:usb5
> 5: 451891 XT-PIC-XT uhci_hcd:usb4, HDA Intel,

This could be a bit problematic if you use the corresponding usb port..

> i915@email-addr-hidden:0000:00:02.0, pciehp
> 7: 23 XT-PIC-XT uhci_hcd:usb2
> 9: 68641 XT-PIC-XT acpi
> 10: 1638393 XT-PIC-XT uhci_hcd:usb3, pciehp, wifi0
> 11: 3 XT-PIC-XT eth0, pciehp
> 12: 887680 XT-PIC-XT i8042
> 14: 0 XT-PIC-XT libata
> 15: 44113 XT-PIC-XT libata
> NMI: 0
> ERR: 0

Flo

-- 
Palimm Palimm!
http://tapas.affenbande.org
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