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