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avieth
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Location: Canada
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 Posted: Tue Apr 07, 2009 7:49 pm Post subject: The State of Conexant CX20561 (Hermosa) on snd-hda-intel? |
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My Lenovo Y430 has what lspci calls:
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00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
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but it uses the Conexant CX20561 (Hermosa) codec. It's too bad for me because hda-intel seems to work nicely with the Venice chip.
Anyways, sound works just fine from all three speakers (left, right, subwoofer). Left and right obey mute and fader controls, but the subwoofer acts strangely:
It obeys the fader, but not mute controls
It will not mute when headphones are plugged in.
So the only issue is that the subwoofer will not obey mute controls with this driver. I've tried both of the model variables for this codec (laptop, hp) with similar results for both. I've also tried using the patch without any luck.
One more thing: headphones don't mute when toggled, but front speakers do turn off when headphones are present. Microphone works, too, not that I use it.
Any information or ideas? |
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avieth
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Joined: 17 Sep 2004
Posts: 1945
Location: Canada
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| Posted: Tue Apr 07, 2009 10:05 pm Post subject: |
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Aha... There is an open bug report.
Priority is normal... If you read my post on the bug report, you'll know that I'm going to physically disable the subwoofer. It's a gimmick anyways, and also a bit of a pest. |
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avieth
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Joined: 17 Sep 2004
Posts: 1945
Location: Canada
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| Posted: Wed Apr 08, 2009 5:48 pm Post subject: |
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Success! In case anyone else wants to do this, I'll outline the steps it took. No soldering gun necessary! Just a screwdriver and a thin, flat wedge.
1. Remove panels from the bottom of the Y430.
2. Remove all chassis screws (you can leave the heatsink, CPU fan screws in place.
3. Turn the laptop over and grab your wedge. Carefully pry the plastic panel (the one with the power button on it) off. It should come off without breaking, but be careful! It took me 10 minutes to get mine off.
4. Unfasten the keyboard screws and remove the keyboard.
5. Disconnect keyboard, mouse, and plastic panel cables.
6. Unscrew the two screws revealed when the keyboard is removed.
7. With the laptop in front of you as it is in normal use, there is a cable moving from the centre towards the northeast of the machine. It's quite tight on the chassis, so just loosen it from its plastic guides by prodding it with a screwdriver and the laptop should open right up quite easily.
8. Push the top of the chassis up from underneath the mouse pad and you should be able to see the DVD drive on the right. Just in front of it is a black prism with something like: "<Brand name> 40Ohm 2W Speaker" written on it. I remember the name started with an S. Anyways, to the left of that driver is a white connector, the kind of connector that CPU heatsinks use for power.
9. Unplug that cable and use a piece of masking tape to fasten it somewhere else.
10. Reassemble the machine, plug the headphones in, and take it to the library or some other quiet place!
Note that I unfastened the LCD screen, but I'm not sure if that was necessary. I got the whole thing reassembled perfectly with no signs of wear except for tool marks where I pried the plastic panel off. My warranty is surely void, but that's okay. |
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