lkml.org 
[lkml]   [2005]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Problems on Apple iBook with ALSA and snd-powermac [2.6.11.5]
From
Date
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>

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-04-06 13:31    [W:0.037 / U:6.936 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site