Kubuntu 12.04 here.
This system is built for heavy gaming and videos, it has a Zogis GeForce GTX 550 Ti which connected to my TV via HDMI.
I'm using the sound card that's integrated into the GPU, I have made it my primary card in alsa by changing "/usr/share/alsa/alsa.conf":
defaults.ctl.card 0
defaults.pcm.card 0
defaults.pcm.device 0
became:
defaults.ctl.card NVidia
defaults.pcm.card Nvidia
defaults.pcm.device 7
I have never liked pulseaudio, and alsa does everything I need faster, so pulseaudio is usually the first thing I remove in my installation.
sudo apt-get purge pulseaudio
However those are the problems I have without pulseaudio:
1) dolphin-emu produces some weird noises randomly.
2) The 2 games I have developed which use SDL for sound have sound distorted and failing a lot.
http://cmcgames.darkphear.com/2012/01/yagac.html
http://iceroyds.darkphear.com/
Other games that use SDL for sound seem to have the same behaviour.
When I run it in the console I have a LOT of: ALSA lib pcm.c:7339snd_pcm_recover) underrun occurred
3) MAME has serious latency in sound (about half a second). It uses SDL for sound too.
4) MAME running old games such as twinbee have a terrible crackling sound that makes it unplayable.
There are two lame workarounds for this; one is reducing sampling rate below 22050 (argh!); other is using the alsa oss wrapper : "aoss mame twinbee -audiodriver dsp" which is a little better.
I have tried removing the Ubuntu SDL packages and installing SDL from the official page, but it didn't change a thing. The problem seems to be deeper, maybe in libasound2 or in alsa itself.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: user-kubuntu 1836 F.... kded4
user-kubuntu 2202 F.... kmix
/dev/snd/controlC0: user-kubuntu 1836 F.... kded4
user-kubuntu 2202 F.... kmix
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf6420000 irq 56'
Mixer name : 'Realtek ALC892'
Components : 'HDA:10ec0892,80862007,00100302'
Controls : 38
Simple ctrls : 19
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xf6000000 irq 17'
Mixer name : 'Nvidia GPU 15 HDMI/DP'
Components : 'HDA:10de0015,10de0101,00100100'
Controls : 25
Simple ctrls : 5
DistroRelease: Ubuntu 12.04
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
NonfreeKernelModules: nvidia
Package: alsa-driver (not installed)
ProcEnviron:
LANGUAGE=pt_BR
TERM=xterm
LANG=pt_BR.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
Tags: precise
Uname: Linux 3.2.0-26-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 04/20/2012
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BGP6710J.86A.2185.2012.0420.0057
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: DP67BG
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG10491-306
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrBGP6710J.86A.2185.2012.0420.0057:bd04/20/2012:svn:pn:pvr:rvnIntelCorporation:rnDP67BG:rvrAAG10491-306:cvn:ct3:cvr:
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: user-kubuntu 1836 F.... kded4
user-kubuntu 2202 F.... kmix
/dev/snd/controlC0: user-kubuntu 1836 F.... kded4
user-kubuntu 2202 F.... kmix
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf6420000 irq 56'
Mixer name : 'Realtek ALC892'
Components : 'HDA:10ec0892,80862007,00100302'
Controls : 38
Simple ctrls : 19
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xf6000000 irq 17'
Mixer name : 'Nvidia GPU 15 HDMI/DP'
Components : 'HDA:10de0015,10de0101,00100100'
Controls : 25
Simple ctrls : 5
DistroRelease: Ubuntu 12.04
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
NonfreeKernelModules: nvidia
Package: alsa-driver (not installed)
ProcEnviron:
LANGUAGE=pt_BR
TERM=xterm
LANG=pt_BR.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
Tags: precise
Uname: Linux 3.2.0-26-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 04/20/2012
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BGP6710J.86A.2185.2012.0420.0057
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: DP67BG
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG10491-306
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrBGP6710J.86A.2185.2012.0420.0057:bd04/20/2012:svn:pn:pvr:rvnIntelCorporation:rnDP67BG:rvrAAG10491-306:cvn:ct3:cvr:
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