I did some more testing and used a USB sound card. If I select output to
that one its still selected when I turn off the monitor.
So it's only when I use the built in sound that it switched to HDMI when
I turn off the monitor.
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Packages, which is subscribed to pulseaudio in Ubuntu.
default output changes from intel builtin to hdmi when display is
turned off. yes off not on
Status in pulseaudio package in Ubuntu:
So if I have sound output selected to be the intel sound on the
mainboard and turn off one of my two displays the audio out is changed
to HDMI. YES OFF it's not a typo.
The Display I turn off is connected to displayport and do not even
have HDMI. The audio is switched over to the still active display.
If I then turn the display back it's still hdmi. If I then turn off
the display that has HDMI out connected. the audio is still connected
to that display. since its actually off I hear no sound but pulseaudio
still connect to it.
I have to manually open the GUI tool and change back to the correct
output when the display is turned off or when the display is blanked.
I attache the output of "pacmd list-cards && pacmd list-sinks"
ok -> ps_w1.txt
fail -> ps_f1.txt
USER PID ACCESS COMMAND
/dev/snd/controlC0: kenjo 3721 F.... pulseaudio
/dev/snd/controlC1: kenjo 3721 F.... pulseaudio
DistroRelease: Ubuntu 17.10
InstallationDate: Installed on 2015-10-18 (659 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
Package: pulseaudio 1:10.0-2ubuntu1
Uname: Linux 4.12.1-041201-generic x86_64
UpgradeStatus: Upgraded to artful on 2017-06-10 (59 days ago)
UserGroups: adm cdrom dip libvirt libvirtd lpadmin lxd plugdev sambashare
sudo video wireshark
dmi.bios.vendor: American Megatrends Inc.
dmi.board.asset.tag: Default string
dmi.board.name: Z170A GAMING M7 (MS-7976)
dmi.chassis.asset.tag: Default string
dmi.product.family: Default string
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