Bug 426977

Summary:	After power up the HDMI audio device disappears
Product:	[Unmaintained] kdemultimedia	Reporter:	Scott <shagooserver>
Component:	general	Assignee:	Multimedia Bugs <multimedia-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	aleixpol
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:	21.04
Sentry Crash Report:

Description Scott 2020-09-26 02:02:51 UTC

SUMMARY
After powering up the PC a few minutes later my HDMI audio device turns off. It is displayed in system settings>audio>advanced tab with the profile set to off in the dropdown menu with no "on" selection displayed. Needless to say no sound output is produced. Restarting the computer always returns the audio device for a few minutes and if a movie is played sound is produced for the length of the movie before the device disappears again.


Syslog produces:
pulseaudio[2564]: GetManagedObjects() failed: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

or a similar message that includes, GetManagedObjects() failed

There is no output to kernel log

STEPS TO REPRODUCE
1. Power on or restart the PC
2. 
3. 

OBSERVED RESULT
With no action the audio device just stops being detected.

EXPECTED RESULT
The audio device is always present and available to play sound

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

ADDITIONAL INFORMATION

Comment 1 Scott 2021-08-14 23:26:59 UTC

Fixed in 21.04, can be closed.

Comment 2 Aleix Pol 2021-08-15 03:31:36 UTC

Does not seem to happen anymore.