I have had a problem with my motherboard that when I used UI2 my sound was very bad. It sounded like crackling and with a bit of an echo. Using the most simple UI I did not have the problem.
Check your type of soundcard via lspci...
Then find your soundcard in the next file
linuxmce@dcerouter:~$ zless /usr/share/doc/alsa-base/driver/ALSA-Configuration.txt.gz
For my specific card is says:
Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
ATI SB450, SB600, RS600,
SIS966, ULI M5461
model - force the model name
position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO siz
probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
single_cmd - Use single immediate commands to communicate with
codecs (for debugging only)
enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
This module supports one card and autoprobe.
Each codec may have a model table for different configurations.
If your machine isn't listed there, the default (usually minimal)
configuration is set up. You can pass "model=<name>" option to
specify a certain model in such a case. There are different
models depending on the codec chip.
Model name Description
3stack 3-jack in back and a headphone out
3stack-digout 3-jack in back, a HP out and a SPDIF out
5stack 5-jack in back, 2-jack in front
5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
6stack 6-jack in back, 2-jack in front
6stack-digout 6-jack with a SPDIF out
z71v 3-jack (HP shared SPDIF)
asus 3-jack (ASUS Mobo)
asus-w1v ASUS W1V
asus-dig ASUS with SPDIF out
asus-dig2 ASUS with SPDIF out (using GPIO2)
fujitsu Fujitsu Laptops (Pi1536)
Adding "options snd-hda-intel position_fix=1 model=3stack" at the end of /etc/modprobe.d/alsa-base solved my problem after a reboot
of the MD.
Maybe somebody is helped with this...
(original link: http://www.lucagasperini.com/blog/2007-laptop-sound-working/