https://bugs.kde.org/show_bug.cgi?id=418874
Bug ID: 418874
Summary: Changing device profile to HDMI is reset to default
after monitor goes into powersave
Product: pulseaudio-qt
Version: 1.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
System: Kubuntu 20.04 beta 64bits
There is an old report, but this still happens:
https://bugs.freedesktop.org/show_bug.cgi?id=93946
The problem sometimes happens when monitor enters power save mode or when I
suspend/resume the system. The device is set to headphones by default when the
problem occurs.
==================
===
My audio devices output:
$ pactl list sinks
Sink #0
State: SUSPENDED
Name: alsa_output.pci-0000_00_1b.0.hdmi-stereo
Description: Built-in Audio Digital Stereo (HDMI)
Driver: module-alsa-card.c
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Owner Module: 6
Mute: no
Volume: front-left: 36700 / 56% / -15,11 dB, front-right: 36700 /
56% / -15,11 dB
balance 0,00
Base Volume: 65536 / 100% / 0,00 dB
Monitor Source: alsa_output.pci-0000_00_1b.0.hdmi-stereo.monitor
Latency: 0 usec, configured 0 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "HDMI 0"
alsa.id = "HDMI 0"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "3"
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xf7910000 irq 36"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "1e20"
device.product.name = "7 Series/C216 Chipset Family High
Definition Audio Controller (P8Z77-V LX Motherboard)"
device.form_factor = "internal"
device.string = "hdmi:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "hdmi-stereo"
device.profile.description = "Digital Stereo (HDMI)"
device.description = "Built-in Audio Digital Stereo (HDMI)"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
hdmi-output-0: HDMI / DisplayPort (priority: 5900, available)
Active Port: hdmi-output-0
Formats:
pcm
=====
==============
Mentioned workaround in old previous report still works:
https://askubuntu.com/questions/776883/pulseaudio-drops-hdmi-output-at-screen-power-save
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