Public bug reported:
1) Power on system with Salomon
2) Connect an external DP or HDMI monitor via DP/HDMI port
3) check audio output
4) Disconnect external monitor
5) Suspend system via power menu
6) resume the system via press power button on system
7) Connect an external DP or HDMI monitor via DP/HDMI port
8) check audio output
** select output as HDMI/DP, click "Test Speakers"
some error from dmesg
[ 2052.030247] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register
0x2f0d00. -5
[ 2064.937495] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register
0x2f0d00. -5
[ 2074.867368] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register
0x2f0d00. -5
[ 2086.902482] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register
0x2f0d00. -5
[ 2116.339892] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register
0x2f0d00. -5
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Hui Wang (hui.wang)
Status: New
** Tags: originate-from-1839926 somerville
** Tags added: originate-from-1839926 somerville
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https://bugs.launchpad.net/bugs/1840394
Title:
Intel HDMI audio print "Unable to sync register" errors
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