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On Thu, Dec 24, 2009 at 09:53:43PM +0000, bn wrote: |
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> Hi, |
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> |
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> I am updating my Macbook Pro installation. While many programs I updated |
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> often, the basics (Xorg, kernel, etc.) were taking dust since... well, a |
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> lot. I only found time with these holidays. This is therefore probably |
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> the first thread of a long series... |
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> |
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> To make it short: The machine is a late-2007 Macbook Pro which I updated |
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> from vanilla-sources 2.6.24-rc6 to gentoo-sources-2.6.31.6. Everything |
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> essential seems to work fine, apart from audio. Audio card is |
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> recognized, the hardware (from lshw) is: |
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> |
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> description: Audio device |
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> product: 82801H (ICH8 Family) HD Audio Controller |
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> vendor: Intel Corporation |
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> physical id: 1b |
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> bus info: pci@0000:00:1b.0 |
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> version: 03 |
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> width: 64 bits |
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> clock: 33MHz |
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> capabilities: pm msi pciexpress bus_master cap_list |
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> configuration: driver=HDA Intel latency=0 module=snd_hda_intel |
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> |
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> The situation is a classic: everything *seems* recognized, no program |
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> compalins, *but* I hear only silence, no audio. |
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> |
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> alsamixer and kmix agree on everything being turned on. Where should I |
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> try to look? |
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|
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I've never done this for a Mac (and it's kernel) ... however, let's try: |
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|
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First issue "cat /proc/asound/card0/codec#* | grep Codec" |
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|
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Which codec does your HDA Intel use? Then check if it's in your kernel: |
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|
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zgrep 'CONFIG_SND_HDA_CODEC' /proc/config.gz |
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|
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Your codec might not be easy to determine, such as mine: |
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jeremiah ~ # cat /proc/asound/card0/codec#* | grep Codec |
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Codec: Analog Devices AD1984 |
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jeremiah ~ # zgrep 'CONFIG_SND_HDA_CODEC' /proc/config.gz |
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# CONFIG_SND_HDA_CODEC_REALTEK is not set |
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CONFIG_SND_HDA_CODEC_ANALOG=y |
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# CONFIG_SND_HDA_CODEC_SIGMATEL is not set |
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# CONFIG_SND_HDA_CODEC_VIA is not set |
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# CONFIG_SND_HDA_CODEC_ATIHDMI is not set |
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# CONFIG_SND_HDA_CODEC_NVHDMI is not set |
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# CONFIG_SND_HDA_CODEC_INTELHDMI is not set |
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# CONFIG_SND_HDA_CODEC_CIRRUS is not set |
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# CONFIG_SND_HDA_CODEC_CONEXANT is not set |
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# CONFIG_SND_HDA_CODEC_CA0110 is not set |
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# CONFIG_SND_HDA_CODEC_CMEDIA is not set |
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# CONFIG_SND_HDA_CODEC_SI3054 is not set |
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|
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However, in the Help for CONFIG_SND_HDA_CODEC_ANALOG we read: |
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Say Y here to include Analog Device HD-audio codec support in |
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snd-hda-intel driver, such as AD1986A. |
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|
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Research told me that the AD1984 and AD1986A use the same module, |
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and I find AD1984 in this file: |
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/lib/modules/2.6.32.2/kernel/sound/pci/hda/snd-hda-codec-analog.ko |
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|
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If you need more assistance, post the output of: |
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"cat /proc/asound/card0/codec#* | grep Codec" and |
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"zgrep 'CONFIG_SND_HDA_CODEC' /proc/config.gz" |
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|
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If those are correct, it's time to look at alsa settings. Run this: |
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http://slackwarebox.dyndns.org:88/HOW-TOs/alsa-info.sh |
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ALSA-Info script v 0.4.58 and give a link to the location of your |
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output. |
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-- |
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"Experience is a hard teacher because she gives the test first, the |
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lesson afterward. But properly learned, the lesson forever changes |
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the man." |
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