Re: sound regression in 3.2-rc3 (lenovo laptops)

[Takashi Iwai <tiwai@suse.de>]

At Mon, 5 Mar 2012 16:11:12 -0500,
Chris Mason wrote:
> 
> Hi everyone,
> 
> I installed rc6 today on my laptop and discovered sound
> no longer works.  I can hear a few clicks from the speakers as it boots,
> but nothing else.
> 
> After a while I got the internal speaker in the laptop working by
> randomly clicking between all the permutations of (mute, speaker,
> headphone, main, speaker, beep, alsa, pulseaudio) in my mixer app.  But,
> I couldn't get any noise out of the headphone jack.
> 
> I took a wild guess based on the changesets to snd-hda-intel and
> narrowed it down to the change below.  With this reverted, I don't have
> an alsa headphone output anymore (just master, pcm) and everything is
> working again.

FYI, the same effect could be achieved by passing model=thinkpad
option to snd-hda-intel module without recompiling, too.

> My laptop is an x201, not a T510...

Could you give alsa-info.sh outputs (run with --no-upload option) on
both working and non-working kernels?


thanks,

Takashi

> 
> -chris
> 
> commit 29c5fbbcfefba5225a6783683c46c39e10877703
> Author: David Henningsson <david.henningsson@canonical.com>
> Date:   Mon Jan 23 16:39:55 2012 +0100
> 
>     ALSA: HDA: Use model=auto for Thinkpad T510
>     
>     The user reports that model=auto works fine for him. Using
>     model=auto bring in new features such as jack detection notification
>     to userspace.
>     
>     Alsa info is available at http://paste.ubuntu.com/805351/
>     
>     Signed-off-by: David Henningsson <david.henningsson@canonical.com>
>     Signed-off-by: Takashi Iwai <tiwai@suse.de>
> 
> diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
> index 8a32a69..a7a5733 100644
> --- a/sound/pci/hda/patch_conexant.c
> +++ b/sound/pci/hda/patch_conexant.c
> @@ -3027,7 +3027,7 @@ static const struct snd_pci_quirk cxt5066_cfg_tbl[] = {
>  	SND_PCI_QUIRK(0x17aa, 0x20f2, "Lenovo T400s", CXT5066_THINKPAD),
>  	SND_PCI_QUIRK(0x17aa, 0x21c5, "Thinkpad Edge 13", CXT5066_THINKPAD),
>  	SND_PCI_QUIRK(0x17aa, 0x21c6, "Thinkpad Edge 13", CXT5066_ASUS),
> - 	SND_PCI_QUIRK(0x17aa, 0x215e, "Lenovo Thinkpad", CXT5066_THINKPAD),
> +	SND_PCI_QUIRK(0x17aa, 0x215e, "Lenovo T510", CXT5066_AUTO),
>  	SND_PCI_QUIRK(0x17aa, 0x21cf, "Lenovo T520 & W520", CXT5066_AUTO),
>  	SND_PCI_QUIRK(0x17aa, 0x21da, "Lenovo X220", CXT5066_THINKPAD),
>  	SND_PCI_QUIRK(0x17aa, 0x21db, "Lenovo X220-tablet", CXT5066_THINKPAD),
>