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    Subject[patch 019/164] ALSA: hda: Use LPIB for Sony VPCS11V9E
    2.6.33-stable review patch.  If anyone has any objections, please let me know.


    From: Daniel T Chen <>

    commit e96d3127760a2fc509bca6bf7e61e8bc61497aeb upstream.


    Symptom: On the Sony VPCS11V9E, using GStreamer-based applications with
    PulseAudio in Ubuntu 10.04 LTS results in stuttering audio. It appears
    to worsen with increased I/O.

    Test case: use Rhythmbox under increased I/O pressure. This symptom is
    reproducible in the current daily stable alsa-driver snapshots (at least
    up until 21 May 2010; later snapshots fail to build from source due to
    missing preprocessor directives when compiled against 2.6.32).

    Resolution: add SSID for this machine to the position_fix quirk table,
    explicitly specifying the LPIB method.

    Reported-and-Tested-By: Lauri Kainulainen <>
    Signed-off-by: Daniel T Chen <>
    Signed-off-by: Takashi Iwai <>
    Signed-off-by: Greg Kroah-Hartman <>

    sound/pci/hda/hda_intel.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/sound/pci/hda/hda_intel.c
    +++ b/sound/pci/hda/hda_intel.c
    @@ -2269,6 +2269,7 @@ static struct snd_pci_quirk position_fix
    SND_PCI_QUIRK(0x1028, 0x01f6, "Dell Latitude 131L", POS_FIX_LPIB),
    SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
    SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
    + SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
    SND_PCI_QUIRK(0x1106, 0x3288, "ASUS M2V-MX SE", POS_FIX_LPIB),
    SND_PCI_QUIRK(0x1179, 0xff10, "Toshiba A100-259", POS_FIX_LPIB),
    SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),

     \ /
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