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Date: Tue, 20 Mar 2012 22:31:08 +0000
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user] mdev: sound is only working some of the time.
Message-ID: <20120320223107.GA2961@acm.acm>
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From: Alan Mackenzie <acm@muc.de>
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Hi, all.

Got a problem with my system running under mdev.  When I try to play CDs
(with aqualung feeding into PulseAudio), no sound comes out.  However,
when I listen to an audio section from a newspaper page such as
www.tagesschau.de (no idea what audio format) it works.

Clearly this is something to do with mdev.  I had a look at the devices
in /dev, searching for those in group audio.  Under udev, I find the
following as device nodes:

adsp audio dsp mixer mixer1 sequencer sequencer2.

Under mdev, all of these bar one are symlinks into the real nodes in a
subdirectory.  The odd man out is mixer1 which is a device node, but
with owner/group begin root/root (rather than root/audio).

Can anybody suggest any fix, or further areas of exploration?  Thanks!

-- 
Alan Mackenzie (Nuremberg, Germany).