[G31M-ES2L, Realtek ALC887-VD, Green Line Out, Rear] No sound at all

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After fresh install i have no sound at all.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-19.31-generic-pae 3.2.12
Uname: Linux 3.2.0-19-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info:
 Error: command ['amixer', '-c', '0', 'info'] failed with exit code 1: amixer: Mixer load hw:0 error: Invalid argument
 Card hw:0 'Intel'/'HDA Intel at 0xfdff8000 irq 43'
   Mixer name : 'Realtek ALC887-VD'
   Components : 'HDA:10ec0887,1458a002,00100302'
   Controls : 38
Card0.Amixer.values: Error: command ['amixer', '-c', '0'] failed with exit code 1: amixer: Mixer hw:0 load error: Invalid argument
Date: Thu Mar 22 14:20:02 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120321)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 LANG=hu_HU.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
Symptom_Card: Beépített hang - HDA Intel
Symptom_Jack: Green Line Out, Rear
Symptom_Type: No sound at all
Symptom_amixerStderr: a m i x e r : M i x e r h w : I n t e l l o a d e r r o r : I n v a l i d a r g u m e n t
Title: [G31M-ES2L, Realtek ALC887-VD, Green Line Out, Rear] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/09/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: FI
dmi.board.name: G31M-ES2L
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrFI:bd08/09/2010:svnGigabyteTechnologyCo.,Ltd.:pnG31M-ES2L:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnG31M-ES2L:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: G31M-ES2L
dmi.sys.vendor: Gigabyte Technology Co., Ltd.