[CentOS-docs] Acer laptops (and the snd_hda_intel module

Scott Robbins scottro at nyc.rr.com
Sun Aug 10 09:11:10 UTC 2008

On Sun, Aug 10, 2008 at 09:19:47AM +0200, Fabian Arrotin wrote:

> Scott Robbins wrote:

> >Just a note for anyone doing a page on Acer laptops.  I had put in my
> >own page, and notice that someone had put in theirs as well, that though
> >the module loads, sound doesn't work. It turns out that one can get sound 
> >working by downloading the latest
> >alsa drivers. I've added a note to my page on the 4720z.  The issue
> >seems to be that CentOS uses an older version of alsa.

> Are you sure the provided alsa/snd-hda-intel module doesn't work with your 
> hardware ? 

Yes, I am quite sure.  I am aware of the trick of specifying the model
in modprobe.conf (or modprobe.d/alsa-base) but it didn't work in this

The nice thing is that with these newer drivers, that model=acer line is
not required for sound to work.

> Maybe adding a link/note on the wiki about all the parameters that this module 
> accepts is worth writing : all the paramaters are in the file 
> /usr/share/doc/kernel-doc-2.6.18/Documentation/sound/alsa/ALSA-Configuration.txt 
> (package kernel-doc)

I do have a link to my page, where I mention the model=acer trick.  I
think that's a great idea to add mention of possible parameters, but
should probably be in a separate page about sound.  (I don't feel
capable of writing such a page--my sound needs are pretty basic, and I'm
no expert on it.  Something with a link, as well as telling the reader
how to apply these parameters, for example, in /etc/modprobe.conf, would
certainly be useful, however.)

Scott Robbins
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