From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Martin Loschwitz <madkiss@madkiss.org>
Cc: Jaroslav Kysela <perex@suse.cz>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: Problems on Apple iBook with ALSA and snd-powermac [2.6.11.5]
Date: Mon, 28 Mar 2005 10:27:43 +1000 [thread overview]
Message-ID: <1111969664.5409.42.camel@gaston> (raw)
In-Reply-To: <20050327230835.GA9006@minerva.local.lan>
On Mon, 2005-03-28 at 01:08 +0200, Martin Loschwitz wrote:
> Hi folks,
>
> given that the alsa-user-mailinglist has some strange kind of authentication
> mechanism, and admin-authorization and whatever, I'm writing this mail to the
> LKML (it would have been CCed here anyway).
>
> The current snd-powermac module from ALSA seems to have trouble with modern
> Apple iBook computers (and possible other Apple notebooks, but I can't tell
> for sure). With 2.6.11.5 and having snd-powermac loaded, playing some sound
> results in a very noisy playback; you can only hear that if you turn volume
> on the PCM and VOL mixers up to the maximum, and even then, it's very hard
> to hear. After removing snd-powermac and loading the "old" pmac-driver, the
> sound playback works just fine.
Have you tried disabling DRC Or increasing the DRC range level ?
> I have been able to find out that with 2.6.8 (at least with the version that
> Debian ships currently), the problem does not appear; snd-powermac does its
> job very nicely there. Given that 2.6.11 included some ALSA changes, I just
> compiled 2.6.10 on this box and booted it, and had the same problems I have
> with snd-powermac on 2.6.11.5.
>
> Is this a known problem and is a fix available for it? If not, what can I do
> to help with hunting this bug? I really like ALSA and prefer it over the old
> pmac-sound-driver.
>
--
Benjamin Herrenschmidt <benh@kernel.crashing.org>
next prev parent reply other threads:[~2005-03-28 0:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-27 23:08 Problems on Apple iBook with ALSA and snd-powermac [2.6.11.5] Martin Loschwitz
2005-03-28 0:27 ` Benjamin Herrenschmidt [this message]
2005-03-29 3:20 ` Lee Revell
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1111969664.5409.42.camel@gaston \
--to=benh@kernel.crashing.org \
--cc=linux-kernel@vger.kernel.org \
--cc=madkiss@madkiss.org \
--cc=perex@suse.cz \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.