[alsa-devel] ALSA changes in 2.6.23-rc6 for Intel HDA
maximlevitsky at gmail.com
Thu Sep 13 18:16:47 CEST 2007
On Wednesday 12 September 2007 17:30:29 Jon Smirl wrote:
> On 9/12/07, Maxim Levitsky <maximlevitsky at gmail.com> wrote:
> > On Tuesday 11 September 2007 19:58:00 Jon Smirl wrote:
> > > The ALSA changes in 2.6.23-rc6 for Intel HDA made me change my volume
> > > from about 30% to 75% to get the same level of sound. Was this
> > > intentional?
> > >
> > > My ALSA info is here.
> > > http://pastebin.ca/692226
> > >
> > Hi,
> > First of all, what kernel do you compare to (which has louder sound)
> > Then if you use headphones, maybe you plugged them in 'surround output'
> > Like center/LFE/side/surround.
> > Those outputs give much lower levers of sound.
> > Only Front HP and Line-out have special amp for headphones.
> 2.6.23-rc5, I have stereo speakers plugged into the left/right output.
> I never moved the speaker plug. The volume gets louder when I load the
> new kernel.
> It looks like the name of the main PCM channel changed from 'pcm' to
> 'PCM" too. I had to reset my levels in alsamixer. I have a STAC9227.
> I have everything working. It just all needed to be readjusted. Plus
> now I have to have my amp (powered speakers) set at a much higher
> level than before.
> > Best regards,
> > Maxim Levitsky
It mustn't be the kernel
Last change in hda-intel code in in pre-2.6.23-rc1
by the way, PCM control is not hardware control
it is a softvol plug-in
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