[alsa-devel] poor sound from ALC 850/880 in alsa 1.0.21 and 1.0.23
From: Colin Kincaid Williams discord@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@gmail.com
how do I mute them manually, without hdaanalyser?
On Wed, Dec 1, 2010 at 1:35 AM, Raymond Yau superquad.vortex2@gmail.com wrote:
2010/12/1 Colin Kincaid Williams discord@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@gmail.com wrote:
2010/11/28 Colin Kincaid Williams discord@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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Colin Kincaid Williams