[alsa-devel] poor sound from ALC 850/880 in alsa 1.0.21 and 1.0.23

[Colin Kincaid Williams]

From: Colin Kincaid Williams <discord at uw.edu>
Date: Wed, Dec 1, 2010 at 3:47 PM
Subject: Re: [alsa-devel] poor sound from ALC 850/880 in alsa 1.0.21 and 1.0.23
To: Raymond Yau <superquad.vortex2 at gmail.com>


how do I mute them manually, without hdaanalyser?

On Wed, Dec 1, 2010 at 1:35 AM, Raymond Yau <superquad.vortex2 at gmail.com> wrote:
> 2010/12/1 Colin Kincaid Williams <discord at uw.edu>
>
>> I selected node 0x0c in  hdaanalyzer and see audio mixer [OxOb] in the
>> Connection list, but I cannot select the radio button.
>>
>
> According to the block diagram of alc880 datasheet, it look like two mute
> switches for node 0x02 and 0x0b or checkbox in hda_analyzer
>
>> Node 0x0c [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out
>>  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
>>  Amp-In vals:  [0x00 0x00] [0x00 0x00]
>
> Unfortunately hda_analyzer seem fail to parse your codec -info
>
>  File "./hda_analyzer.py", line 483, in <module>
>    sys.exit(main(sys.argv))
>  File "./hda_analyzer.py", line 460, in main
>    if read_nodes(sys.argv[1:]) == 0:
>  File "./hda_analyzer.py", line 110, in read_nodes
>    read_nodes3(card, idx, i)
>  File "./hda_analyzer.py", line 77, in read_nodes3
>    c = HDACodecProc(card, codec, proc_file)
>  File "/home/raymond/hda-analyzer/hda_proc.py", line 474, in __init__
>    self.parse(proc_file)
>  File "/home/raymond/hda-analyzer/hda_proc.py", line 678, in parse
>    node.add_ampvals(line[15:], HDA_INPUT)
>  File "/home/raymond/hda-analyzer/hda_proc.py", line 353, in add_ampvals
>    self.wrongfile('amp vals ]')
>  File "/home/raymond/hda-analyzer/hda_proc.py", line 143, in wrongfile
>    raise ValueError, "wrong proc file format (%s)" % msg
> ValueError: wrong proc file format (amp vals ])
>
>
>
>
>>
>> On Sun, Nov 28, 2010 at 11:40 PM, Raymond Yau
>> <superquad.vortex2 at gmail.com> wrote:
>> > 2010/11/28 Colin Kincaid Williams <discord at uw.edu>
>> >
>> >> no, the motherboard has 6 plugs, but no digital outputs on the back.
>> >> Furthermore, I muted the CD channel, the line in was already muted,
>> >> but I still have crap sound compared to my $20 mp3 player. Something
>> >> else is wrong!
>> >>
>> >>
>> > Take a look at the block diagram of alc880 datasheet
>> >
>> > does it help when you use hda-analyzer to mute the amp-in value from node
>> > 0x0b in 0x0c ?
>> >
>> >
>> > Node 0x0c [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out
>> >  Control: name="Front Playback Volume", index=0, device=0
>> >    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
>> >  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
>> >  Amp-In vals:  [0x00 0x00] [0x00 0x00]
>> >  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
>> >  Amp-Out vals:  [0x33 0x33]
>> >  Connection: 2
>> >     0x02 0x0b
>> >
>>
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