I tried to compile new alsa-drivers from realteks page
http://www.realtek.com.tw/downloads/ >>   High Definition Audio Codecs
(Software) >> Linux driver (3.0)

After that I have:

viktor@hedefalk-i7:~$ cat /proc/asound/*
cat: /proc/asound/card0: Is a directory
cat: /proc/asound/card1: Is a directory
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xfb520000 irq 89
  0: [ 0]   : control
  1:        : sequencer
  4: [ 0- 0]: hardware dependent
 16: [ 0- 0]: digital audio playback
 17: [ 0- 1]: digital audio playback
 24: [ 0- 0]: digital audio capture
 26: [ 0- 2]: digital audio capture
 33:        : timer
00-00: HDA Codec 0
 0 snd_hda_intel
cat: /proc/asound/PCH: Is a directory
00-00: ALC898 Analog : ALC898 Analog : playback 1 : capture 1
00-01: ALC898 Digital : ALC898 Digital : playback 1
00-02: ALC898 Alt Analog : ALC898 Alt Analog : capture 2
cat: /proc/asound/seq: Is a directory
G0: system timer : 4000.000us (10000000 ticks)
P0-0-0: PCM playback 0-0-0 : SLAVE
P0-0-1: PCM capture 0-0-1 : SLAVE
P0-1-0: PCM playback 0-1-0 : SLAVE
P0-2-1: PCM capture 0-2-1 : SLAVE
P0-2-3: PCM capture 0-2-3 : SLAVE
Advanced Linux Sound Architecture Driver Version 1.0.2x-130606-v5.18.
Compiled on Aug  7 2013 for kernel 3.8.0-27-generic (SMP).

No output device is visible in Sound control panel anymore

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https://bugs.launchpad.net/bugs/1206121

Title:
  No sound at all, just white noise. Worked before 13.04.

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