Date: Mon, 22 Jun 2009 08:20:04 GMT From: "Joseph S. Atkinson" <jsa.bsd@gmail.com> To: freebsd-multimedia@FreeBSD.org Subject: Re: kern/135556: [snd_hda] Sound (mostly) broken w/ snd_hda on -CURRENT Message-ID: <200906220820.n5M8K4Of086330@freefall.freebsd.org>
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The following reply was made to PR kern/135556; it has been noted by GNATS. From: "Joseph S. Atkinson" <jsa.bsd@gmail.com> To: bug-followup@FreeBSD.org, Ariff Abdullag <ariff@FreeBSD.org> Cc: Subject: Re: kern/135556: [snd_hda] Sound (mostly) broken w/ snd_hda on -CURRENT Date: Mon, 22 Jun 2009 04:17:07 -0400 What I am suspecting is going on here is that sound will only pipe through pcm0 and that hw.snd.default_unit may be honored, but meaningless. I'm doing as much testing on this as I can with what I have. So far, sound only comes up when I manually kldload snd_hda still. Doing so makes the AL888 come up as hdac0 and pcm0 through pcm2 and the R6xx HDMI port as hdac1/pcm3. I can switch hw.snd.default_unit around however, and sound will stop on pcm0 if I point it at another pcm device. There may be sound going there, but I don't have speakers on those ports yet (plan to test that tomorrow). I am thinking that if sound isn't on pcm0, then it goes nowhere. So booting with snd_hda_load="YES" forces detection of the HDMI port first, making it pcm0, then the sysctl sets it to pcm1. But via my suspected bug, the signal isn't making it to pcm1, because it is only working for pcm0. Tomorrow, I will test this theory by hooking up speakers to another AL888 sound jack. If I get no sound from the pcm1 device on AL888 as hdac0, it should be an indicator that the problem is just some misdirection for devices other than pcm0. If you know a way of disabling the HDMI port, preventing it from even being probed, it might help me. Doing so would force snd_hda to detect AL888 only and other factors affecting sound-on-boot could be eliminated. I will email again tomorrow when I test my pcm1 device, and am willing to try any and all patches you may have here.
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