Re: [PATCH] snd_hda_codec_realtek: enable ALC271 for Acer laptops

From: Takashi Iwai
Date: Thu Apr 14 2011 - 15:26:29 EST

At Thu, 14 Apr 2011 19:08:47 +0200,
Guido Trentalancia wrote:
> Hello again Takashi.
> On Thu, 2011-04-14 at 11:45 +0200, Takashi Iwai wrote:
> > At Thu, 07 Apr 2011 19:38:27 +0200,
> > Guido Trentalancia wrote:
> > >
> > > This quick fix to the Realtek HD Audio driver enables configurable support for the ALC271 type commonly found on some Acer laptops (e.g. Aspire 5745G).
> > >
> > > Normally, the driver would fall back to BIOS auto-probing. However, the "model=acer" parameter can be passed on the boot command line to enable such support. Otherwise, it is quite common that the internal microphone does not work.
> >
> [cut]
> >
> > Anyway, it's not such quite common that the machine doesn't work
> > without the model quirk any longer :) In most cases, we want to avoid
> > the model quirk but fixing the pin configuration instead.
> Actually I have to disagree on the "not quite common". Just use the
> right keywords (including "microphone") along with a good web search
> engine and you'll discover plenty of reports for this chipset including
> formal bug reports on several distributions.

You missed the point. What's not common is that you MUST give the
model quirk to resolve the problem. In most cases, it's just a wrongly
set pin configuration, or a parser bug. For both of which, the proper
solution is not to pass or create a model quirk.

Looking for bugs by google easy. But looking for bug fixes without
proper information isn't easy.

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