[alsa-devel] Dell Latitude D830 internal speaker volume degraded on 2.6.29-rc*

[Takashi Iwai]

At Thu, 29 Jan 2009 20:04:07 -0500,
Ben Gamari wrote:
> 
> Hey all,
> 
> For quite a while now, the internal speaker volume on my Dell Latitude
> D830 has been very soft. While usually the case can be made to
> resonate with all mixers at 100%, recently I have noticed a
> substantial decrease in output.
> 
> Figuring this must be caused by a codec mis-configuration, I booted
> into a working kernel 2.6.27.9-134.fc10.x86_64 and collected a dump
> from /proc/asound/card0/codec#0. After booting back into my own
> vanilla kernel from master, I collected another trace. When I was
> looking through the diff -u of the two dumps, one particular
> difference seemed notable,
> 
>  Node 0x11 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out R/L
>    Amp-Out caps: N/A
> -  Amp-Out vals:  [0x7f 0x7f]
> -  Converter: stream=5, channel=0
> +  Amp-Out vals:  [0xff 0xff]
> +  Converter: stream=0, channel=0
>    Power: setting=D0, actual=D0
>    Delay: 13 samples
> 
> Perhaps this is significant? Regardless, I have attached both of the
> original dumps. Let me know if anything else is needed. Thanks,

Please run rather alsa-info.sh (with --no-upload option) and attach
both outputs from working and non-working states.  Also, try the very
latest alsa-driver version (snapshot):
    ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz


thanks,

Takashi