[alsa-devel] mic on macbook air
Hello list, from time to time I spend some time trying to get the mic working on a Macbook air 2,1. I tried looking at the relevant info from the corresponding kernel extensions on mac os X. The codec has "Vendor Id: 0x10ec0885" so the relevant part of the info.plist on mac os X reads
<dict> <key>MicAttributes</key> <integer>28</integer> <key>MicInfo</key> <string>Sampled on rising edge</string> <key>NodeID</key> <integer>39</integer> <key>PinConfigDefault</key> <integer>2426405136</integer> </dict>
Which tells me nothing. In particular I don't have a node 0x27=39 (at least not that hda-analyzer sees) so it's not surprising that if I send the corresponding verbs to set_config_default I don't get anything. Also, I don't see how setting the pinconfigdefault could affect my not having the mic working (anyway I tried setting those pinconfigdefaults that put the node as a fixed mic on all nids 0x19-0x1c to no avail)
As for the sampled on rising edge, I don't know how to use this info. any ideas?
Thanks,
R.
At Mon, 27 Sep 2010 00:32:03 +0200, Reimundo wrote:
Hello list, from time to time I spend some time trying to get the mic working on a Macbook air 2,1. I tried looking at the relevant info from the corresponding kernel extensions on mac os X. The codec has "Vendor Id: 0x10ec0885" so the relevant part of the info.plist on mac os X reads
<dict> <key>MicAttributes</key> <integer>28</integer> <key>MicInfo</key> <string>Sampled on rising edge</string> <key>NodeID</key> <integer>39</integer> <key>PinConfigDefault</key> <integer>2426405136</integer> </dict>
Which tells me nothing. In particular I don't have a node 0x27=39 (at least not that hda-analyzer sees) so it's not surprising that if I send the corresponding verbs to set_config_default I don't get anything. Also, I don't see how setting the pinconfigdefault could affect my not having the mic working (anyway I tried setting those pinconfigdefaults that put the node as a fixed mic on all nids 0x19-0x1c to no avail)
As for the sampled on rising edge, I don't know how to use this info. any ideas?
Justin Mattock made once some patches for MacBookAir, but they are pending because no one tested yet.
Justin, could you repost the patches (rebase if needed) for testing again?
thanks,
Takashi
On 09/27/2010 07:39 AM, Takashi Iwai wrote:
At Mon, 27 Sep 2010 00:32:03 +0200, Reimundo wrote:
Hello list, from time to time I spend some time trying to get the mic working on a Macbook air 2,1. I tried looking at the relevant info from the corresponding kernel extensions on mac os X. The codec has "Vendor Id: 0x10ec0885" so the relevant part of the info.plist on mac os X reads
<dict> <key>MicAttributes</key> <integer>28</integer> <key>MicInfo</key> <string>Sampled on rising edge</string> <key>NodeID</key> <integer>39</integer> <key>PinConfigDefault</key> <integer>2426405136</integer> </dict>
Which tells me nothing. In particular I don't have a node 0x27=39 (at least not that hda-analyzer sees) so it's not surprising that if I send the corresponding verbs to set_config_default I don't get anything. Also, I don't see how setting the pinconfigdefault could affect my not having the mic working (anyway I tried setting those pinconfigdefaults that put the node as a fixed mic on all nids 0x19-0x1c to no avail)
As for the sampled on rising edge, I don't know how to use this info. any ideas?
Justin Mattock made once some patches for MacBookAir, but they are pending because no one tested yet.
Justin, could you repost the patches (rebase if needed) for testing again?
thanks,
Takashi
Sure I can rebase them... but there's no guarantee that they work... from what I remember the mic on the macbookAir is not shown with the codec file so you might have to change the pins around.
Justin P. Mattock
As far as I know I wrote the only patch for macbook air 2,1 that shipped with 2.6.34 but that was for the internal speaker only. I could never get the mic going.
Cheers,
R.
On Mon, Sep 27, 2010 at 1:36 PM, Justin P. Mattock justinmattock@gmail.com wrote:
On 09/27/2010 07:39 AM, Takashi Iwai wrote:
At Mon, 27 Sep 2010 00:32:03 +0200, Reimundo wrote:
Hello list, from time to time I spend some time trying to get the mic working on a Macbook air 2,1. I tried looking at the relevant info from the corresponding kernel extensions on mac os X. The codec has "Vendor Id: 0x10ec0885" so the relevant part of the info.plist on mac os X reads
<dict> <key>MicAttributes</key> <integer>28</integer> <key>MicInfo</key> <string>Sampled on rising edge</string> <key>NodeID</key> <integer>39</integer> <key>PinConfigDefault</key> <integer>2426405136</integer> </dict>
Which tells me nothing. In particular I don't have a node 0x27=39 (at least not that hda-analyzer sees) so it's not surprising that if I send the corresponding verbs to set_config_default I don't get anything. Also, I don't see how setting the pinconfigdefault could affect my not having the mic working (anyway I tried setting those pinconfigdefaults that put the node as a fixed mic on all nids 0x19-0x1c to no avail)
As for the sampled on rising edge, I don't know how to use this info. any ideas?
Justin Mattock made once some patches for MacBookAir, but they are pending because no one tested yet.
Justin, could you repost the patches (rebase if needed) for testing again?
thanks,
Takashi
Sure I can rebase them... but there's no guarantee that they work... from what I remember the mic on the macbookAir is not shown with the codec file so you might have to change the pins around.
Justin P. Mattock
On 09/27/2010 09:40 AM, Reimundo Heluani wrote:
As far as I know I wrote the only patch for macbook air 2,1 that shipped with 2.6.34 but that was for the internal speaker only. I could never get the mic going.
Cheers,
R.
when doing a cat codec#0 | grep Pin on my iMac9,1 I can see:
Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Pincap 0x0000373c: IN OUT HP Detect Pin Default 0x90a00110: [Fixed] Mic at Int N/A Pin-ctls: 0x24: IN VREF_80
when doing the same for the mba1,1 I didn't see anything in there that said Mic.. I'm wondering if the Mic is there, it's just not being shown when doing cat codec#0 due to apple changing something with the hardware. did you try different pin numbers?(even though none of the pins say Mic)
Justin P. Mattock
On Mon, Sep 27, 2010 at 2:32 PM, Justin P. Mattock justinmattock@gmail.com wrote:
On 09/27/2010 09:40 AM, Reimundo Heluani wrote:
As far as I know I wrote the only patch for macbook air 2,1 that shipped with 2.6.34 but that was for the internal speaker only. I could never get the mic going.
Cheers,
R.
when doing a cat codec#0 | grep Pin on my iMac9,1 I can see:
Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Pincap 0x0000373c: IN OUT HP Detect Pin Default 0x90a00110: [Fixed] Mic at Int N/A Pin-ctls: 0x24: IN VREF_80
when doing the same for the mba1,1 I didn't see anything in there that said Mic.. I'm wondering if the Mic is there, it's just not being shown when doing cat codec#0 due to apple changing something with the hardware. did you try different pin numbers?(even though none of the pins say Mic)
Justin P. Mattock
Well, here it could just be my ignorance, but I think last year when I was trying, I tried all possible pins and didn't find the mic anywhere. Then I thought that it could be some vendor parameters on 0x20, but then I saw the plist file in the kext and the only thing they adjust is the pindefault to 0x90a00110: [Fixed] Mic at Int N/A on what it seems to be either pin 0x1c (which I tried) or 0x27 (which is nonexistent). There's a thread at the ubuntu forums with people running alsa on air 2,1 but I couldn't get anyone to play with hda-verb.
Cheers,
R.
On 09/27/2010 10:47 AM, Reimundo Heluani wrote:
On Mon, Sep 27, 2010 at 2:32 PM, Justin P. Mattock justinmattock@gmail.com wrote:
On 09/27/2010 09:40 AM, Reimundo Heluani wrote:
As far as I know I wrote the only patch for macbook air 2,1 that shipped with 2.6.34 but that was for the internal speaker only. I could never get the mic going.
Cheers,
R.
when doing a cat codec#0 | grep Pin on my iMac9,1 I can see:
Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Pincap 0x0000373c: IN OUT HP Detect Pin Default 0x90a00110: [Fixed] Mic at Int N/A Pin-ctls: 0x24: IN VREF_80
when doing the same for the mba1,1 I didn't see anything in there that said Mic.. I'm wondering if the Mic is there, it's just not being shown when doing cat codec#0 due to apple changing something with the hardware. did you try different pin numbers?(even though none of the pins say Mic)
Justin P. Mattock
Well, here it could just be my ignorance, but I think last year when I was trying, I tried all possible pins and didn't find the mic anywhere. Then I thought that it could be some vendor parameters on 0x20, but then I saw the plist file in the kext and the only thing they adjust is the pindefault to 0x90a00110: [Fixed] Mic at Int N/A on what it seems to be either pin 0x1c (which I tried) or 0x27 (which is nonexistent). There's a thread at the ubuntu forums with people running alsa on air 2,1 but I couldn't get anyone to play with hda-verb.
Cheers,
R.
ahh.. clears that idea up.. was wondering if that might be the case with that, but it's not. last I remember I went into the apple store and looked at the hardware settings, which seem pretty basic..
one thing I remember with the iMac, is the mic doesn't work right away i.e. need to toggle the Line/Mic back and forth before anything starts to work(which Im pretty sure you tried already), code for that is
hda_input_mux alc889A_imac91_capture_source = {
but I'm still uncertain where to find those numbers(ended up just guessing, and used the one that worked the best).
Justin P. Mattock
participants (4)
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Justin P. Mattock -
Reimundo -
Reimundo Heluani
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Takashi Iwai