Date: Sun, 2 Feb 2014 14:57:39 -0500 From: "Brian M. Waters" <brianmwaters@gmail.com> To: freebsd-hardware@freebsd.org Subject: snd_hda autodetection Message-ID: <CAGibMaKCLyMwWxV5VFfi3UeN7Vm7gTUzDFyH8ckCuiteSyAq4A@mail.gmail.com>
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I brought this up on the #bsddev channel on EFnet, but nobody picked it up so I'm re-posting it here. I have been messing around trying to get the snd_hda driver to work 100% on my ThinkPad. There are a lot of HDA chips out there, and it turns out laptop manufacturers are real "cowboy" about wiring them up - pins x, y, z on one machine may not have the same function as pins x, y, z on another machine. To make matters worse, these quirks are never documented. However, Linux (and Windows) "just work" on these platforms - while FreeBSD (at least on my X230) requires manually experimenting with the snd_hda driver's configuration via device.hints. I am not sure exactly how Linux/Windows handle this - perhaps they do some kind of probing, or perhaps they ship with a long list of known quirks. My question is: is there some technical reason this has not been implemented in FreeBSD, or is it simply something waiting to be implemented? Is there any way I can help out? - BW
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