[Bug 175688] after the system is constantly being written to the log message: fbsd kernel: hdacc0: Unexpected unsolicited response with tag 0: 00000000
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Date: Wed, 25 Feb 2026 01:04:31 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=175688
Kevin Zheng <kevinz5000@gmail.com> changed:
What |Removed |Added
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CC| |kevinz5000@gmail.com
--- Comment #7 from Kevin Zheng <kevinz5000@gmail.com> ---
There seem to be a few different but possibly related errors here, but I'm
posting here because others seem to have posted about my particular error.
I'm on 15.0-RELEASE-p2 GENERIC amd64 and get the following message:
hdacc1: Unexpected unsolicited response with tag 63: ffffffff
/dev/sndstat shows this output is <Intel Kaby Lake (HDMI/DP 8ch)>
I can reliably trigger this by putting the display connected to this DP output
into DPMS suspend. This HDA message appears when the display comes out of DPMS
suspend.
I don't use the DP audio output so cannot comment about whether the audio
output keeps working or not.
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