Re: HDA Intel microphone regression in 3.1.0

[Borislav Petkov]

(adding some more people to Cc)

On Wed, Nov 02, 2011 at 10:25:54AM +0000, Chris Vine wrote:
> My Lenovo S12 IdeaPad netbook uses a HDA Intel sound card with Realtek
> ALC269 chip.  With the 3.1.0 kernel, all microphone input (both with the
> internal microphone and any external microphone) is permanently
> muted, although sound output works OK.  Microphone input works correctly
> with the 3.0 and earlier kernels.
> 
> The only obvious difference between the 3.0 and 3.1 kernels is that
> with kernel 3.0.7, 'dmesg | grep HDA' gives this:
> 
>  HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
>  HDA Intel 0000:00:1b.0: setting latency timer to 64
>  input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input10
>  input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
>  input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
> 
> whereas with kernel 3.1.0 it just gives:
> 
>  input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input9
>  input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
>  input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
> 
> lspci -v gives the following audio hardware information:
> 
>  00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
> 	Subsystem: Lenovo Device 3be9
> 	Flags: bus master, fast devsel, latency 0, IRQ 22
> 	Memory at fc140000 (64-bit, non-prefetchable) [size=16K]
> 	Capabilities: [50] Power Management version 2
> 	Capabilities: [60] MSI: Enable- Count=1/1 Maskable- 64bit+
> 	Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
> 	Capabilities: [100] Virtual Channel
> 	Capabilities: [130] Root Complex Link
> 	Kernel driver in use: snd_hda_intel
> 	Kernel modules: snd-hda-intel
> 
> lsmod | egrep "snd|sound" gives:
> 
>  snd_seq_dummy           1023  0 
>  snd_seq_oss            23792  0 
>  snd_seq_midi_event      4408  1 snd_seq_oss
>  snd_seq                39673  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
>  snd_seq_device          4121  3 snd_seq_dummy,snd_seq_oss,snd_seq
>  snd_pcm_oss            33087  0 
>  snd_mixer_oss          12647  1 snd_pcm_oss
>  snd_hda_codec_realtek   205307  1 
>  snd_hda_intel          18347  2 
>  snd_hda_codec          64459  2 snd_hda_codec_realtek,snd_hda_intel
>  snd_hwdep               4420  1 snd_hda_codec
>  snd_pcm                57725  3 snd_pcm_oss,snd_hda_intel,snd_hda_codec
>  snd_timer              14567  2 snd_seq,snd_pcm
>  snd                    40539  15 snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
>  soundcore               4129  1 snd
>  snd_page_alloc          5445  2 snd_hda_intel,snd_pcm
> 
> Chris
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-- 
Regards/Gruss,
Boris.
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