[kde] [Bug 499605] New: No sound output when switching to LDAC Bluetooth profile in KDE on openSUSE with PipeWire

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=499605

            Bug ID: 499605
           Summary: No sound output when switching to LDAC Bluetooth
                    profile in KDE on openSUSE with PipeWire
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: openSUSE
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: groenator at pm.me
  Target Milestone: ---

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SUMMARY
On openSUSE with PipeWire, when switching Bluetooth audio profiles in KDE (both
for PulseAudio and PipeWire), there is no sound output when selecting the LDAC
profile. This issue occurs consistently after switching between the mSBC and
other (specially LDAC) profiles. 

 Steps to reproduce:

    Connect a Bluetooth device (e.g., headphones or speaker).

    Select the LDAC profile and play media in Firefox (sound is output
correctly).

    Switch to the mSBC profile (sound is still output correctly).

    Switch back to the LDAC profile (video is playing, but there is no sound).

    Switch to the mSBC profile again (sound is output correctly).

    Switch back to the ACC profile (video is playing, but there is no sound).

    Switch to the mSBC profile again (sound is output correctly).

    Set the LDAC profile again (no sound). Disconnect the Bluetooth device,
reconnect, and select the LDAC profile (sound is output correctly).

    If the profile is changed and then set back to LDAC or other profile that's
not mSBC, the issue persists: no sound output, and the following logs appear:
Feb 06 15:23:47 tuxedo01 systemsettings[59308]: org.kde.pulseaudio: No object
for name "bluez_output.10_4F_A8_DA_C2_E0.1"
Feb 06 15:23:54 tuxedo01 kded6[2567]: org.kde.pulseaudio: No object for name
"bluez_output.10_4F_A8_DA_C2_E0.1"
Feb 06 15:23:54 tuxedo01 plasmashell[2662]: org.kde.pulseaudio: No object for
name "bluez_output.10_4F_A8_DA_C2_E0.1"
Feb 06 15:23:54 tuxedo01 systemsettings[59308]: org.kde.pulseaudio: No object
for name "bluez_output.10_4F_A8_DA_C2_E0.1"
Feb 06 15:23:54 tuxedo01 systemsettings[59308]: org.kde.pulseaudio: No object
for name "bluez_output.10_4F_A8_DA_C2_E0.1"

 Additional notes:

    The issue is observed with both PipeWire and PulseAudio backends in KDE.

    Uninstalling PipeWire and using PulseAudio with KDE’s two available
profiles still results in no sound after switching to LDAC.

    I am using wayland with KDE6 in case it makes a difference.

    I am using Sony headphones.



STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

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