From: Alan Mackenzie <acm@muc.de>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] mdev: sound is only working some of the time.
Date: Wed, 21 Mar 2012 13:02:47 +0000 [thread overview]
Message-ID: <20120321130247.GA3112@acm.acm> (raw)
In-Reply-To: <CAA2qdGV3D+xzNz7eb_4XpVQ9wH8wh5fQrN1WsaGNdExHhaQ7YQ@mail.gmail.com>
On Wed, Mar 21, 2012 at 07:49:02PM +0700, Pandu Poluan wrote:
> On Mar 21, 2012 6:22 PM, "Alan Mackenzie" <acm@muc.de> wrote:
> > Hello, Pandu.
> > On Wed, Mar 21, 2012 at 07:35:14AM +0700, Pandu Poluan wrote:
> > > On Mar 21, 2012 5:36 AM, "Alan Mackenzie" <acm@muc.de> wrote:
> > > > 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!
> > > That's indicative that it's the kernel doing the populating (that
> > > is, everything belongs to root:root).
> > No, it was just that one device belonging to root:root. This is
> > mysterious indeed.
> > > That means, mdev hasn't got the chance to 'restructure' the /dev
> > > directory (that is, rename and/or move and/or chown devices).
> > > Does 'mdev -s' exist in your /sbin/linuxrc? Can you post your
> > > linuxrc here?
> > mdev -s wasn't in my /sbin/linuxrc. It is now. It hasn't made any
> > difference to that wayward device.
> > As I said to Walt, I've solved the problem by turfing out pulseaudio.
> Strange...
> Do you use mdev to handle hotplugs, btw?
You mean, like sticking in a USB stick, or turning my printer on? Yes, I
do.
> Rgds,
--
Alan Mackenzie (Nuremberg, Germany).
next prev parent reply other threads:[~2012-03-21 13:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 22:31 [gentoo-user] mdev: sound is only working some of the time Alan Mackenzie
2012-03-20 23:23 ` [gentoo-user] " walt
2012-03-21 11:11 ` Alan Mackenzie
2012-03-21 0:35 ` [gentoo-user] " Pandu Poluan
2012-03-21 11:17 ` Alan Mackenzie
2012-03-21 12:49 ` Pandu Poluan
2012-03-21 13:02 ` Alan Mackenzie [this message]
2012-03-21 13:12 ` Pandu Poluan
2012-03-21 13:38 ` Alan Mackenzie
2012-03-21 15:38 ` Pandu Poluan
2012-03-21 13:17 ` Pandu Poluan
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