stan wrote:
stan wrote:
stan wrote:
dragoran wrote:
On 8/18/07, *stan* <eiqep_eiwo_y@xxxxxxx
<mailto:eiqep_eiwo_y@xxxxxxx>> wrote:
dragoran wrote:
>
>
> On 8/18/07, *stan* <eiqep_eiwo_y@xxxxxxx
<mailto:eiqep_eiwo_y@xxxxxxx>
> <mailto:eiqep_eiwo_y@xxxxxxx <mailto:eiqep_eiwo_y@xxxxxxx>>>
wrote:
>
> Hi,
>
> I have an application that opens the sound card. With the
latest
> updates it will still open it as default device but can no
longer open
> it as plughw:0,0. The error I get is
> cannot open audio device "plughw:0,0" (Device or resource
busy)
>
> When I run powertop, I see that the driver has a lot of
interrupts
> even
> though there is no sound running.
> Top causes for wakeups:
> 43.9% (100.6) <interrupt> : ohci_hcd:usb2, eth0
> 20.5% ( 46.9) <interrupt> : ICE1724
> 9.6% ( 22.0) <interrupt> : libata
> 6.4% ( 14.6) at-spi-registry : schedule_timeout
(process_timeout)
> 4.6% ( 10.5) X : do_setitimer
(it_real_fn)
> 4.4% ( 10.0) /usr/bin/sealer : schedule_timeout
(process_timeout)
>
> Perhaps this is normal, but given the device busy error
above it makes
> me suspicious that there is something wrong.
>
> Sound plays normally using audio player, but it uses the
default
> device. I notice that the usage drops by about half for
ICE1724 when
> the sound is playing.
>
> I'll probably do a debug of this at some point and post any
findings.
>
>
> that may be related to the pulse audio changes you have to use
default
> to play sound with alsa.
>
>
That isn't good. Default automatically runs the sound through
dmix.
And it has a set frame rate of
48000. Other rates are software resampled. I want to avoid
that and
only use the hardware sample rates
so that there is no resampling on the sound.
Is there a way to configure sound with pulse audio to avoid this,
or do
I have to remove pulse audio in order to
get direct access to alsa?
Thanks.
try running pasuspend before running your app.
I don't find that app. I find pasuspender, but it wants me to
connect to a server. I installed everything pulseaudio related
except for the esound compatibility module. That had a conflict
with esound which is already installed. Haven't tried removing
pulseaudio yet, I suppose that is next. Unless you have any other
suggestions?
Well, I removed everything pulseaudio related and the problem was
still there. Yesterday there was an update to both the kernel and
all of the alsa packages. Suspicion moves there. The last
production version of alsa-lib on Fedora 7 had disabled support for
all floating point sound formats. Perhaps a similar regression has
happened with the new version.
The error occurs in function snd_config_search_alias_hooks in file
conf.c of alsa-lib. This calls a define which is a function,
SND_CONFIG_SEARCH_ALIAS.
I can't trace the actual error because there is nothing to trace, but
the error number is -2.
The problem is esd is hogging the sound device. It appears to use OSS
(/dev/dsp, /dev/dsp2, etc.) This won't play nice with alsa library
requests. For now I've set the -d option with /dev/dsp2 (I only have
one sound device) in /etc/esd.conf so that it is disabled. I'll look
into removing it. Not sure how it got installed because I don't recall
doing so. Can't find it under services either.
The folks on alsa-devel resolved this for me.
NAME
esd - The Enlightened Sound Daemon
DESCRIPTION
Starts up EsounD, which provides a sound mixing server.
USAGE
esd [options]
-d DEVICE force esd to use sound device DEVICE
-b run server in 8 bit sound mode
-r RATE run server at sample rate of RATE
-as SECS free audio device after SECS of inactivity (-1 to
disable)
-unix use unix domain sockets instead of tcp/ip
-tcp use tcp/ip sockets instead of unix domain
-public make tcp/ip access public (other than localhost)
-promiscuous start unlocked and owned (disable authenticaton)
NOT RECOMMENDED
-terminate terminate esd daemon after last client exits
-noterminate do not terminate esd daemon after last client exits
-nobeeps disable startup beeps
-beeps enable startup beeps
-trust start esd even if use of /tmp/.esd can be insecure
-port PORT listen for connections at PORT (only for tcp/ip)
-bind ADDRESS binds to ADDRESS (only for tcp/ip)
-v --version print version information
Possible devices are: /dev/dsp, /dev/dsp2, etc.
FILES /etc/esd.conf daemon configuration file
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