Não há som no KUbuntu 14.10, apenas o dispositivo de saída dummy listado

Question

Minha placa de som é "Game Theater XP 5.1".

Este comando:

sudo alsa force-reload

Dá:

Unloading ALSA sound driver modules: snd-cs46xx snd-ac97-codec snd-pcm snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-seq-device snd-timer.

Loading ALSA sound driver modules: snd-cs46xx snd-ac97-codec snd-pcm snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-seq-device snd-timer.

Então parece ok para mim.

Eu tentei desinstalar e reinstalar com estes comandos:

sudo apt-get remove --purge alsa-base pulseaudio

e

sudo apt-get install alsa-base pulseaudio

Esta é a saída do segundo comando (em inglês, obrigado pelo seu comentário):

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  pulseaudio-module-x11
Suggested packages:
  apmd alsa-oss oss-compat pavumeter paman pavucontrol paprefs
  pulseaudio-module-raop pulseaudio-esound-compat
The following NEW packages will be installed:
  alsa-base pulseaudio pulseaudio-module-x11
0 upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/895 kB of archives.
After this operation, 4419 kB of additional disk space will be used.
Do you want to continue? [Y/n] 
Selecting previously unselected package alsa-base.
(Reading database ... 142700 files and directories currently installed.)
Preparing to unpack .../alsa-base_1.0.25+dfsg-0ubuntu4_all.deb ...
Unpacking alsa-base (1.0.25+dfsg-0ubuntu4) ...
Selecting previously unselected package pulseaudio.
Preparing to unpack .../pulseaudio_1%3a4.0-0ubuntu22_amd64.deb ...
Unpacking pulseaudio (1:4.0-0ubuntu22) ...
Selecting previously unselected package pulseaudio-module-x11.                  
Preparing to unpack .../pulseaudio-module-x11_1%3a4.0-0ubuntu22_amd64.deb ...   
Unpacking pulseaudio-module-x11 (1:4.0-0ubuntu22) ...                           
Processing triggers for man-db (2.7.0.2-2) ...                                  
Processing triggers for dbus (1.8.8-1ubuntu2.1) ...                             
Processing triggers for ureadahead (0.100.0-16) ...                             
ureadahead will be reprofiled on next reboot                                    
Setting up alsa-base (1.0.25+dfsg-0ubuntu4) ...                                 
Setting up pulseaudio (1:4.0-0ubuntu22) ...
Adding user pulse to group audio
update-rc.d: warning: start and stop actions are no longer supported; falling back     to defaults
update-rc.d: warning: stop runlevel arguments (1) do not match pulseaudio         Default-Stop values (0 1 6)
Processing triggers for dbus (1.8.8-1ubuntu2.1) ...
Processing triggers for ureadahead (0.100.0-16) ...
Setting up pulseaudio-module-x11 (1:4.0-0ubuntu22) ...
Processing triggers for libc-bin (2.19-10ubuntu2.1) ...

Eu notei esses erros:

update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
update-rc.d: warning: stop runlevel arguments (1) do not match pulseaudio Default-Stop values (0 1 6)

    

Answer 1

Graças a Temüjin de ubuntuforums.org esta questão foi resolvida! Temüjin escreveu:

Os arquivos de firmware necessários costumavam fazer parte do kernel, mas foram removidos por razões legais no kernel 3.14:

link

Isso deve corrigir você (recarregue alsa ou reinicialize quando terminar):

cd ~
wget ftp://ftp.alsa-project.org/pub/firmware/alsa-firmware-1.0.28.tar.bz2
tar xjf alsa-firmware-1.0.28.tar.bz2
cd alsa-firmware-1.0.28
./configure
cd cs46xx/
make
sudo make install

Perfeito! Apenas uma pequena diferença: o wget baixou os arquivos compilados também para que o comando make não fosse necessário