Arch Linux

Strangiato

Member

Registered: 2020-01-10

Posts: 406

Speakers are muted when hdmi monitor enters in power saving mode

Hello

I use Arch + KDE Plasma DE, and my system is fully updated.
I use an hdmi monitor, my speakers connected to motherboard often are muted when my monitor enters in power saving mode. Apparently it is a random behavior, it does not always occur.
But when it does, journa log prints these messages:

nov 30 14:20:06 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:06 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:06 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:06 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:06 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:06 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:06 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:06 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:24 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:20:24 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3"
nov 30 14:20:24 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:24 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3"
nov 30 14:20:24 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:24 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3"
nov 30 14:20:24 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_03.0.pro-output-3.monitor"
nov 30 14:20:24 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"

When my hdmi monitor enters in power saving mode and the speakers are not muted as expected, the journal log only prints two lines:

nov 30 14:53:09 Arch-PC kded6[1087]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"
nov 30 14:53:09 Arch-PC plasmashell[1119]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor"

Any idea on what's going on and how to avoid muted speakers when the monitor enters in power saving mode?

Thanks for reading.