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Date:      Fri, 10 Apr 2020 21:34:02 +0000
From:      bugzilla-noreply@freebsd.org
To:        multimedia@FreeBSD.org
Subject:   [Bug 229190] hdac0: Command timeout on address 2 and headphone audio too low
Message-ID:  <bug-229190-12827-oTWmndvqMv@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-229190-12827@https.bugs.freebsd.org/bugzilla/>
References:  <bug-229190-12827@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229190

--- Comment #10 from Ed Maste <emaste@freebsd.org> ---
I can reproduce this on my Lenovo X1 Carbon 7th generation. It has the
following:
hdac0: <Intel Cannon Lake HDA Controller> mem
0xea23c000-0xea23ffff,0xea000000-0
xea0fffff at device 31.3 on pci0
hdacc0: <Realtek ALC285 HDA CODEC> at cad 0 on hdac0
hdaa0: <Realtek ALC285 Audio Function Group> at nid 1 on hdacc0
pcm0: <Realtek ALC285 (Analog 3.1+HP/2.0)> at nid 20,23,33 and 25 on hdaa0
hdacc1: <Intel Kaby Lake HDA CODEC> at cad 2 on hdac0
hdaa1: <Intel Kaby Lake Audio Function Group> at nid 1 on hdacc1
pcm1: <Intel Kaby Lake (HDMI/DP 8ch)> at nid 3 on hdaa1

One interesting point, I removed snd_hda from GENERIC and loaded it as a mo=
dule
instead, after boot; in that case the HDMI audio codec times out at attach =
time
instead:

hdac0: <Intel Cannon Lake HDA Controller> mem
0xea23c000-0xea23ffff,0xea000000-0xea0fffff at device 31.3 on pci0
hdac0: Command 0x200f0000 timeout on address 2
hdac0: Command 0x200f0002 timeout on address 2
hdac0: CODEC at address 2 not responding!
hdacc0: <Realtek ALC285 HDA CODEC> at cad 0 on hdac0
hdaa0: <Realtek ALC285 Audio Function Group> at nid 1 on hdacc0
pcm0: <Realtek ALC285 (Analog 3.1+HP/2.0)> at nid 20,23,33 and 25 on hdaa0

In this case there's no hdacc1, and no further command timeout messages.

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