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    SubjectRe: [ALSA] HDA: no sound in headphone-out caused by commit f889fa91ad47e (2.6.25-rc1 regression)
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    Takashi Iwai wrote:
    > Takashi Iwai wrote:
    > > Matej Laitl wrote:
    > > > With your patch, the sound in headphone-out is working again, but
    > > > surprisingly the integrated loudspeakers stopped working! ;)
    > > >
    > > > Also, new on/of control appeared in alsamixer - "Speaker", but unmuting
    > > > it (and unmuting all playback controls, plugging-out headphones) didn't
    > > > have an effect on non-working integrated loudspeakers.
    > > >
    > > > Some kernel mesgs with your patch:
    > > > hda_codec: Unknown model for ALC262, trying auto-probe from BIOS...
    > > > autoconfig: line_outs=1 (0x1b/0x0/0x0/0x0/0x0)
    > > >    speaker_outs=1 (0x14/0x0/0x0/0x0/0x0)
    > > >    hp_outs=1 (0x15/0x1b/0x0/0x0/0x0)
    > > >    mono: mono_out=0x0
    > > >    inputs: mic=0x18, fmic=0x19, line=0x0, fline=0x0, cd=0x0, aux=0x0
    > > >
    > > > alsa-info.sh output:
    > > > http://pastebin.ca/901089
    > >
    > > Thanks.  There seems a couple of bugs in this auto-configuration
    > > code.  Try the additional patch below.  This will unmute the
    > > speaker-pin.
    >
    > This version might be slightly better...

    Yes, this "slightly better" patch applied on top of your first patch against
    hda_codec.c did the trick, but with some side-effects:
    * the "Speaker" switch now mutes/unmutes speakers
    * muting/unmuting "Front" channel now has zero effect (in 2.6.24 it had the
    same effect as the "Speaker" switch now has)
    * changing volume on "Front" channel now affects volume in headphones (was not
    so in 2.6.24)

    So there are now 3 vol controls that affect both speakers and headphones:
    * Master (which appeared somewhere between 2.6.24 and .25-rc1), when set to
    zero, the sound is still audible in speakers and headphones
    * PCM, working as expected (0 volume = no sound)
    * Front (0 volume = still audible sound)

    So it is usable now (and those Speaker and Headphones on/off switches make
    sense), but kinda suboptimal. (is it my BIOS who is to blame?)

    Thanks, Matej
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