Re: pulseaudio: no sound, Fedora 12, what debugging/diagnostic info is needed to solve this problem?

I have found audio, in general, and pulseaudio, in particular, tricky.

I try to divide audio into parts, alsa is one part, pulseaudio another.

I believe many software programs use alsa.
I believe alsa, in turn, uses pulseaudio.

I must add a caveat. I believe programs can be configured to use alsa.
I believe some programs can be configured to use pulseaudio, bypassing
alsa. I believe some programs can be configured to bypass pulseaudio,
and go straight to the hardware device drivers.

Assuming your configuration uses alsa, which in turn goes to pulseaudio,
I believe you have to look at both alsa and pulseaudio.

For alsa, do you have alsa-utils installed?
For me, it is rpm -q -i alsa-utils:
rsewill@rsewill:~ <2:18> $ rpm -q -i alsa-utils
Name : alsa-utils Relocations: (not
relocatable)
Version : 1.0.22 Vendor: Fedora Project
Release : 1.fc12 Build Date: Sat 02 Jan 2010
03:26:02
....

If you this installed, there is a program, amixer, please type
amixer

When I type amixer, I get the following:
rsewill@rsewill:~ <2:16> $ amixer
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined penum
Playback channels: Front Left - Front Right
Limits: Playback 0 - 65536
Mono:
Front Left: Playback 15601 [24%] [on]
Front Right: Playback 15601 [24%] [on]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch cswitch-joined penum
Capture channels: Front Left - Front Right
Limits: Capture 0 - 65536
Front Left: Capture 32845 [50%] [on]
Front Right: Capture 32845 [50%] [on]
"Master" seems to control output volume for me.
"Capture" seems to control input from my microphone.

For audio output,
I want "Front Left" and "Front Right" of "Master"
to have a certain volume level, in my case 24%, and be on.
I actually control volume by adjusting the volume of "Master".
I leave pulseaudio alone once I have it set the way I want it.

For my microphone, I control the volume using "Capture".
I leave pulseaudio alone once I have it set the way I want it.

I believe this is only part of the picture.
Alsa, in turn goes to pulseaudio.

There is a pulseaudio volume control applet.
Do you have pavucontrol installed?
It is found in the rpm pavucontrol, for me
rpm -q -i pavucontrol yields
rsewill@rsewill:~ <2:21> $ rpm -q -i pavucontrol
Name : pavucontrol Relocations: (not
relocatable)
Version : 0.9.10 Vendor: Fedora Project
Release : 1.fc12 Build Date: Wed 14 Oct 2009
03:11:07 PM CDT
....

When I run this applet, either from the command line, as pavucontrol,
or from the menu--it is found as
Applications->Sounds and Video-->Pulse Audio Volume Control

an applet pops up, with 5 tabs,
"Playback","Recording","Output Devices","Input Devices","Configuration"
Please look at the "Output Devices" tab,
show "All Output Devices",
Please make sure the device is not muted--if the device is muted
the "Front Left" and "Front Right" lines will be greyed out on a device.
Please adjust the volume of this device, as appropriate.
For me, I have the volume of my device adjusted to 24% for both
"Front Left" and "Front Right".

I have not found man pages for pavucontrol or amixer.
I can make educated guesses what the tabs for pavucontrol mean,
but I would be guessing.

You will have different hardware.
You may get different devices to examine.
Hope you can adapt what I see on my system to what you have.

On Wed, 2010-03-03 at 17:21 -0800, Kenneth Wolcott wrote:
Hi;

Can someone assist me with the interpretation of the provided data
and how to proceed with getting pulseaudio working?

Thanks,
Ken Wolcott

On Tue, Mar 2, 2010 at 22:17, Kenneth Wolcott <kennethwolcott@xxxxxxxxx> wrote:
Hi Don;

Here's what I used to find my problem, in addition to making sure I
found the correct hardware and software versions:

lsmod | grep snd
lspci | grep Audio
cat /proc/asound/cards
aplay -L
pulseaudio --dump-config

Bugzilla (in particular, https://bugzilla.redhat.com/show_bug.cgi?id=544654)

-Don

Thanks for your reply.

How do I interpret the following information divulged by the commands
you suggested that I run?

#!/bin/bash -xv

lsmod | grep snd
+ lsmod
+ grep snd
snd_hda_codec_realtek 199204 1
snd_hda_codec_intelhdmi 12468 1
snd_hda_intel 25096 4
snd_hda_codec 60584 3
snd_hda_codec_realtek,snd_hda_codec_intelhdmi,snd_hda_intel
snd_hwdep 6900 1 snd_hda_codec
snd_seq 46960 0
snd_seq_device 6232 1 snd_seq
snd_pcm 64772 3 snd_hda_intel,snd_hda_codec
snd_timer 17992 2 snd_seq,snd_pcm
snd 50908 16
snd_hda_codec_realtek,snd_hda_codec_intelhdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer
soundcore 5672 1 snd
snd_page_alloc 7832 2 snd_hda_intel,snd_pcm

lspci | grep Audio
+ lspci
+ grep Audio
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
Definition Audio Controller (rev 01)

cat /proc/asound/cards
+ cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf2500000 irq 16

aplay -L
+ aplay -L
default
Default
front:CARD=Intel,DEV=0
HDA Intel, ALC887 Analog
Front speakers
surround40:CARD=Intel,DEV=0
HDA Intel, ALC887 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, ALC887 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, ALC887 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, ALC887 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, ALC887 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Intel,DEV=0
HDA Intel, ALC887 Digital
IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=Intel,DEV=0
HDA Intel, INTEL HDMI
HDMI Audio Output

pulseaudio --dump-conf
+ pulseaudio --dump-conf
### Read from configuration file: /etc/pulse/daemon.conf ###
daemonize = no
fail = yes
high-priority = yes
nice-level = -11
realtime-scheduling = yes
realtime-priority = 5
allow-module-loading = yes
allow-exit = yes
use-pid-file = yes
system-instance = no
cpu-limit = no
enable-shm = yes
flat-volumes = yes
lock-memory = no
exit-idle-time = 20
scache-idle-time = 20
dl-search-path = /usr/lib/pulse-0.9.21/modules
default-script-file = /etc/pulse/default.pa
load-default-script-file = yes
log-target = auto
log-level = notice
resample-method = auto
enable-remixing = yes
enable-lfe-remixing = no
default-sample-format = s16le
default-sample-rate = 44100
default-sample-channels = 2
default-channel-map = front-left,front-right
default-fragments = 4
default-fragment-size-msec = 25
shm-size-bytes = 0
log-meta = no
log-time = no
log-backtrace = 0
rlimit-fsize = -1
rlimit-data = -1
rlimit-stack = -1
rlimit-core = -1
rlimit-rss = -1
rlimit-as = -1
rlimit-nproc = -1
rlimit-nofile = 256
rlimit-memlock = -1
rlimit-locks = -1
rlimit-sigpending = -1
rlimit-msgqueue = -1
rlimit-nice = 31
rlimit-rtprio = 9
rlimit-rttime = 1000000

Thanks,
Ken Wolcott



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