My soundcard is HDA-NVidia

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pavel:/home/pavel # hwinfo --sound
17: PCI 05.0: 0403 Audio device
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_10de_3f0
  Unique ID: CvwD.jgDhodJ40g8
  SysFS ID: /devices/pci0000:00/0000:00:05.0
  SysFS BusID: 0000:00:05.0
  Hardware Class: sound
  Model: "nVidia MCP61 High Definition Audio"
  Vendor: pci 0x10de "nVidia Corporation"
  Device: pci 0x03f0 "MCP61 High Definition Audio"
  SubVendor: pci 0x1019 "Elitegroup Computer Systems"
  SubDevice: pci 0x2608
  Revision: 0xa2
  Driver: "HDA Intel"
  Driver Modules: "snd_hda_intel"
  Memory Range: 0xfe028000-0xfe02bfff (rw,non-prefetchable)
  IRQ: 20 (1988 events)
  Module Alias: "pci:v000010DEd000003F0sv00001019sd00002608bc04sc03i00"
  Driver Info #0:
    Driver Status: snd_hda_intel is active
    Driver Activation Cmd: "modprobe snd_hda_intel"
  Config Status: cfg=no, avail=yes, need=no, active=unknown


It works fine on mplayer and other non-phonon applications. When the KDE is started the greeting sound is corrupted: the quality is awfull and only one speaker (left or right) is used. Amarok and other phonon application acts the same way.

All the devices in "Output Device Preference" from sound configuration of KDE do not work.

After I run alsaconf, the usage of output device HDA NVidia (STAC92xx Analog) works very well. After the reboot of machine the sound is awfull again.

Have you tried changing the Backend used by Phonon? This is located at System Settings > Multimedia. Change to "Backends" tab. I highly recommend the "Xine" backend if it is available.

Thanks, it works. The only working configuration is xine - PulseAudio