Comment 7 for bug 600096

With or without the model="thinkpad" parameter? I had this problem even with the Maverick beta.

Takashi Iwai fixed that problem in the sound git tree commit id 4d15564. Took 'em one day. I assume that will go into 2.6.36 and I hope Canonical adds this one-liner to their Maverick kernel too.

I add the patch here:

more:/usr/src/sound-2.6# git show 4d155641c81203440da64c4633b4efaab75f63b3
commit 4d155641c81203440da64c4633b4efaab75f63b3
Author: Takashi Iwai <email address hidden>
Date: Tue Sep 7 11:58:30 2010 +0200

    ALSA: hda - Add quirk for Lenovo T400s

    Lenovo T400s requires the quirk to make automatic HP/mic switching working.

    Reported-by: Frank Becker <email address hidden>
    Cc: <email address hidden>
    Signed-off-by: Takashi Iwai <email address hidden>

diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 4f06199..71f9d64 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -3094,6 +3094,7 @@ static struct snd_pci_quirk cxt5066_cfg_tbl[] = {
        SND_PCI_QUIRK(0x103c, 0x360b, "HP G60", CXT5066_HP_LAPTOP),
        SND_PCI_QUIRK(0x1179, 0xff50, "Toshiba Satellite P500-PSPGSC-01800T", CXT5066_OLPC_XO_1_5),
        SND_PCI_QUIRK(0x1179, 0xffe0, "Toshiba Satellite Pro T130-15F", CXT5066_OLPC_XO_1_5),
+ SND_PCI_QUIRK(0x17aa, 0x20f2, "Lenovo T400s", CXT5066_THINKPAD),
        SND_PCI_QUIRK(0x17aa, 0x21b2, "Thinkpad X100e", CXT5066_IDEAPAD),
        SND_PCI_QUIRK(0x17aa, 0x21b3, "Thinkpad Edge 13 (197)", CXT5066_IDEAPAD),
        SND_PCI_QUIRK(0x17aa, 0x21b4, "Thinkpad Edge", CXT5066_IDEAPAD),

- a8