[haiku-bugs] Re: [Haiku] #8270: [HDA] very quiet on Lenovo laptop (due to hda mixer?)
- From: "ttcoder" <trac@xxxxxxxxxxxx>
- Date: Tue, 28 Aug 2012 21:46:56 -0000
#8270: [HDA] very quiet on Lenovo laptop (due to hda mixer?)
---------------------------------+----------------------------
Reporter: ttcoder | Owner: korli
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Drivers/Audio/HDA | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
---------------------------------+----------------------------
Comment (by ttcoder):
Now for something VERY odd (and with a little luck, I'm getting closer to
the root problem here): if I remove my "zero verb" hack and do this hack
instead:
{{{
- | ((mmvi->values[i].mux == j) ? 0 : AMP_MUTE));
+ | ((mmvi->values[i].mux == j) ? 0 : 0));
}}}
Then I get a situation "inbetween": instead of being completely disabled,
the audio output is "quiet", like the baseline HDA driver in trunk does.
That is, it is quiet after fiddling with media preflet sliders (they are
out of whack again, so I need to unmute ..etc).
This results in the following:
{{{
KERN: hda: set_mix: 23 mixer: 2
KERN: hda: set_mix: 23 mixer muting 0 (1737000)
KERN: hda: set_mix: 23 mixer muting 1 (1737100)
KERN: hda: set_mix: 23 mixer unmuting 2 (1737200)
KERN: hda: set_mix: 23 mixer muting 3 (1737300)
KERN: hda: set_mix: 23 mixer muting 4 (1737400)
}}}
(i.e. the 0x80 for "unmuting 2" has been hacked away, resulting in a
straight 1737200 value/verb). If sending 0x80 to input 3, or 4, it will
still mute input 0 (speakers).
To re-iterate,
using 0x80 anywhere, even on ANOTHER input than 0 (which corresponds to
widget Speakers/16) will cancel out the sound on Speakers/16 (as well as
on microphone-in IIRC) ! It's like we are setting a magic "be quiet" bit
on the mixer or something.
====
This is a 2007 laptop, with HDA hardware conforming to HDA 1.0.1, whereas
the HDA specs are up to 1.0.3+ now. Could it be that my HDA chipset does
not understand the flags passed to it, mis-interprets them as "quiet down
the sound" or something ?
Here's the code with the flags again:
{{{
verb[j] =
MAKE_VERB(audioGroup->codec->addr,
control->nid,
VID_SET_AMPLIFIER_GAIN_MUTE, AMP_SET_INPUT
| AMP_SET_LEFT_CHANNEL |
AMP_SET_RIGHT_CHANNEL
| AMP_SET_INPUT_INDEX(j)
| ((mmvi->values[i].mux == j) ? 0
: AMP_MUTE));
}}}
--
Ticket URL: <http://dev.haiku-os.org/ticket/8270#comment:13>
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