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Date:      Sat, 25 Aug 2018 17:35:38 +0200
From:      Markus Graf <markusalbertgraf@gmail.com>
To:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Skylake HDA CODEC breaks on dpms
Message-ID:  <864lfizcfp.fsf@gmail.com>

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Hi,

I use an external monitor via HDMI with sound.

hdacc1: <Intel Skylake HDA CODEC> at cad 2 on hdac0
hdaa1: <Intel Skylake Audio Function Group> at nid 1 on hdacc1

That works. Until the monitor goes into power saving mode.

Then I get the following error twice:
hdacc1: Unexpected unsolicited response with tag 63: ffffffff
hdacc1: Unexpected unsolicited response with tag 63: ffffffff

After this error sound is gone.
pavucontrol still shows the sound but it is dead.

I can reproduce the killing by entering
xset dpms force standby
on the console.

Does anybody have any hints how to fix this?
As a workaround is there a command I can use to manually reset hdacc1?
At the moment I shutdown -r to fix this or use xset -dpms to avoid it.

--=20
Liebe Gr=C3=BC=C3=9Fe

Markus Graf



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