Re: HDA Intel microphone regression in 3.1.0

[Takashi Iwai <tiwai@suse.de>]

At Wed, 2 Nov 2011 11:54:42 +0100,
Borislav Petkov wrote:
> 
> (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

It's just a red herring.

> > 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

Please give alsa-info.sh outputs taken from both 3.0 and 3.1 kernels.


thanks,

Takashi