No sound - Dummy Output

Issues related to hardware problems
ccowartm
Posts: 1
Joined: 2016/03/21 01:52:14

No sound - Dummy Output

Postby ccowartm » 2016/03/21 02:00:42

Hello,
I need assistance troubleshooting no sound in centos 7. When I look at the mixer all it has is Dummy Output.

Here are the below outputs for lsmod and RPM
[root@centos7 ~]# lsmod | grep snd
snd_hda_codec_hdmi 53248 1
snd_hda_codec_realtek 81920 1
snd_hda_codec_generic 73728 1 snd_hda_codec_realtek
snd_hda_intel 40960 1
snd_hda_codec 135168 4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
snd_hda_core 69632 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep 16384 1 snd_hda_codec
snd_seq 69632 0
snd_seq_device 16384 1 snd_seq
snd_pcm 98304 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
snd_timer 32768 2 snd_pcm,snd_seq
snd 81920 12 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
soundcore 16384 1 snd

[root@centos7 ~]# rpm -qa | grep alsa
alsa-plugins-pulseaudio-1.0.27-3.el7.x86_64
alsa-firmware-1.0.28-2.el7.noarch
alsa-tools-firmware-1.0.28-2.el7.x86_64
alsa-lib-1.0.28-2.el7.x86_64
alsa-lib-devel-1.0.28-2.el7.x86_64
alsa-utils-1.0.28-4.el7.x86_64

Thank you,

cc

aks
Posts: 2524
Joined: 2014/09/20 11:22:14

Re: No sound - Dummy Output

Postby aks » 2016/03/21 16:57:47

aplay -l

Will tell you what devices alsa is configured to use (as opposed to installed software).

codebinder
Posts: 2
Joined: 2016/04/18 14:06:03

Re: No sound - Dummy Output

Postby codebinder » 2016/04/18 14:13:13

Hi Everyone,
I installed centos 7 and i've the same problem with sound ! No sound. Please what can i do for resolving it ? Thanks

billq
Posts: 1
Joined: 2016/04/26 18:30:09

Re: No sound - Dummy Output

Postby billq » 2016/04/26 19:16:03

Same issue here. "Menu -> Preferences -> Sound" displays only Dummy Output under "Play sound through"...
No sound from any application, theme, web site, etc... at all. Not even a dang "beep".

Based on requested specs and data from similar posts, I have gathered the following:

Centos_7.2# lspci -nn | grep -i audio
00:1b.0 Audio device [0403]: Intel Corporation C600/X79 series chipset High Definition Audio Controller [8086:1d20] (rev 06)
02:00.1 Audio device [0403]: NVIDIA Corporation GK107 HDMI Audio Controller [10de:0e1b] (rev a1)

Centos_7.2# rpm -qa kernel\* | sort
kernel-3.10.0-327.el7.x86_64
kernel-devel-3.10.0-327.el7.x86_64
kernel-headers-3.10.0-327.el7.x86_64
kernel-tools-3.10.0-327.el7.x86_64
kernel-tools-libs-3.10.0-327.el7.x86_64

Centos_7.2# rpm -qa \*release\* | sort
centos-release-7-2.1511.el7.centos.2.10.x86_64
epel-release-7-6.noarch

Centos_7.2# rpm -qa kmod\* | sort
kmod-20-5.el7.x86_64
kmod-libs-20-5.el7.x86_64

Centos_7.2# rpm -qa --qf "%{N}\t%{VENDOR}\n" | grep -iv centos | sort
cinnamon-control-center Fedora Project
cinnamon-control-center-filesystem Fedora Project
cinnamon-desktop Fedora Project
cinnamon Fedora Project
cinnamon-menus Fedora Project
cinnamon-screensaver Fedora Project
cinnamon-session Fedora Project
cinnamon-settings-daemon Fedora Project
cinnamon-translations Fedora Project
cjs Fedora Project
ddd Fedora Project
epel-release Fedora Project
exo Fedora Project
facter Puppet Labs
fping Fedora Project
garcon Fedora Project
google-chrome-stable Google Inc.
gpg-pubkey (none)
gpg-pubkey (none)
gpg-pubkey (none)
grub2 (none)
grub2-tools (none)
gtk2-engines Fedora Project
gtk-murrine-engine Fedora Project
hiera Fedora Project
imlib2 Fedora Project
kernel-devel (none)
kernel-headers (none)
kernel (none)
kernel-tools-libs (none)
kernel-tools (none)
kibana Elasticsearch, Inc.
libgpod Fedora Project
libwnck Fedora Project
libxfce4ui Fedora Project
libxfce4util Fedora Project
massif-visualizer Fedora Project
mintlocale Fedora Project
mokutil (none)
muffin Fedora Project
nemo-extensions Fedora Project
nemo Fedora Project
orage Fedora Project
perf (none)
pidgin Nux!
pidgin-sipe Fedora Project
polkit-gnome Fedora Project
purple-sipe Fedora Project
python-perf (none)
ruby-augeas Fedora Project
ruby-rgen (none)
ruby-shadow (none)
Thunar Fedora Project
thunar-volman Fedora Project
tint2 Fedora Project
tumbler Fedora Project
tzdata-java Red Hat, Inc.
tzdata Red Hat, Inc.
unique Fedora Project
VirtualBox-5.0 Oracle Corporation
vte Fedora Project
xfce4-appfinder Fedora Project
xfce4-mixer Fedora Project
xfce4-panel Fedora Project
xfce4-power-manager Fedora Project
xfce4-session-engines Fedora Project
xfce4-session Fedora Project
xfce4-settings Fedora Project
xfce4-terminal Fedora Project
xfconf Fedora Project
xfdesktop Fedora Project
xfwm4 Fedora Project
xrdp Fedora Project
zukitwo-common Fedora Project
zukitwo-gtk2-theme Fedora Project
zukitwo-gtk3-theme Fedora Project
zukitwo-metacity-theme Fedora Project

Centos_7.2# grep 8086 /lib/modules/*/modules.alias
alias pci:v00008086d*sv*sd*bc04sc03i00* snd_hda_intel
alias pci:v00008086d00003A6Esv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00003A3Esv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000293Fsv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000284Bsv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000269Asv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d000027D8sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00002668sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00002284sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00000F04sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000080Asv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000811Bsv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00003B56sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000160Csv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00000D0Csv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00000C0Csv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00000A0Csv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00009D70sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d0000A170sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00009CA0sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00009C21sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00009C20sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00008D21sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00008D20sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00008CA0sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00008C20sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00001E20sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00001D20sv*sd*bc*sc*i* snd_hda_intel
alias pci:v00008086d00001C20sv*sd*bc*sc*i* snd_hda_intel

Centos_7.2# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3220 Analog [ALC3220 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0

Centos_7.2# amixer info
Card default 'PCH'/'HDA Intel PCH at 0xe7220000 irq 47'
Mixer name : 'Realtek ALC3220'
Components : 'HDA:10ec0280,102805d3,00100003'
Controls : 24
Simple ctrls : 12

Centos_7.2# amixer
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 87
Mono: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 87
Mono:
Front Left: Playback 87 [100%] [0.00dB] [off]
Front Right: Playback 87 [100%] [0.00dB] [off]
Simple mixer control 'Speaker',0
Capabilities: pswitch
Playback channels: Front Left - Front Right
Mono:
Front Left: Playback [off]
Front Right: Playback [off]
Simple mixer control 'Speaker+LO',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 87
Mono:
Front Left: Playback 87 [100%] [0.00dB]
Front Right: Playback 87 [100%] [0.00dB]
Simple mixer control 'PCM',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 255 [100%] [0.00dB]
Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Front Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 0 [0%] [-34.50dB] [off]
Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Front Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%] [0.00dB]
Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Line Out',0
Capabilities: pswitch
Playback channels: Front Left - Front Right
Mono:
Front Left: Playback [on]
Front Right: Playback [on]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 63
Front Left: Capture 0 [0%] [-17.25dB] [on]
Front Right: Capture 0 [0%] [-17.25dB] [on]
Simple mixer control 'Auto-Mute Mode',0
Capabilities: enum
Items: 'Disabled' 'Speaker Only' 'Line Out+Speaker'
Item0: 'Line Out+Speaker'
Simple mixer control 'Rear Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 0 [0%] [-34.50dB] [off]
Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Rear Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%] [0.00dB]
Front Right: 0 [0%] [0.00dB]

Centos_7.2# lsmod |grep -i snd
snd_hda_codec_hdmi 47849 1
snd_hda_codec_realtek 80757 1
snd_hda_codec_generic 74126 1 snd_hda_codec_realtek
snd_hda_intel 35779 2
snd_hda_codec 137386 4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
snd_hda_core 57760 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep 13608 1 snd_hda_codec
snd_seq 66691 0
snd_seq_device 14356 1 snd_seq
snd_pcm 105835 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
snd_timer 29639 2 snd_pcm,snd_seq
snd 83425 14 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,sn
d_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
soundcore 15047 1 snd

Centos_7.2# depmod /lib/modules/3.10.0-327.el7.x86_64/kernel/sound/pci/hda/snd-*
Centos_7.2#


grimmjow_sms
Posts: 10
Joined: 2018/02/03 18:07:00

Re: No sound - Dummy Output

Postby grimmjow_sms » 2018/03/23 16:01:37

I had this issue also, after I installed adobe player, I did the following:

Code: Select all

cd /dev/snd
sudo chmod a+rw *
pulseaudio -k


It worked for me

Source:
https://superuser.com/questions/739431/what-to-do-if-sound-goes-to-dummy-output