problem sa integrisanom zvucnom karticom

Imam problem sa zvucnom karticom integrisanoj na ploci ASUS A7V600-X VIA KT SATA RAID, problem je u tome sto mi se leva strana zvucnika 70% slabije cuje od desne, isao sam na sva moguca podesavanja, cak sam skoro podigao sistem ali bez rezultata, inace ranije je odlicno radilo. Da li je u pitanju nesto hardverski ili sam nesto propustio u podesavanjima.

kucaj u komandnu linju:
# mixer
i vidi koje ces vredmosti da dobijes za vol
pr:

alex@dolphin[~]% mixer
Mixer vol is currently set to 0:0
Mixer pcm is currently set to 57:57
Mixer speaker is currently set to 75:75
Mixer line is currently set to 75:75
Mixer mic is currently set to 0:0
Mixer cd is currently set to 75:75
Mixer rec is currently set to 0:0
Mixer line1 is currently set to 75:75
Mixer phin is currently set to 0:0
Mixer phout is currently set to 0:0
Mixer video is currently set to 75:75
Recording source: mic
alex@dolphin[~]%

kod mene je 0:0
ako hocu da pojacam zvuk, pisem
# mixer vol 50:50
posle koga ce moj volume da bude na 50% ( obe strane)
ako su ti brojke iste a dobijas razlicit volume na speakers, imas hardware problem ( moj guess).
hth,
alex

A gde je ta komandna linija?