After upgrading Ubuuntu 18.04 LTS to 20.04 , when I watching Netflix(by Firefox) videos with my bluetooth speaker (Lasonic i931BT), I found that almost every 49mins ,the video suddenly slow down and then sound stop transmitting to my speaker. It shouldn't happen.
I check the pulseaudio mixer's output device. My speaker dissappeared. Only "Dummy Output " showed. (As the screenshot ) Everytime, I need go to bluetooth manager to disconnect the speaker, and wait it automatically connects again. Sometimes it works, but sometimes does not. I need to reboot to fix it (Power off the speak won't help ).
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: pulseaudio-module-bluetooth 1:13.99.1-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-18.22-lowlatency 5.4.24
Uname: Linux 5.4.0-18-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Mar 18 23:13:06 2020
InstallationDate: Installed on 2020-03-10 (8 days ago)
InstallationMedia: Ubuntu-Studio 20.04 LTS "Focal Fossa" - Alpha amd64 (20200130)
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/14/2019
dmi.bios.vendor: INSYDE Corp.
dmi.bios.version: 1.07.06TCOP
dmi.board.asset.tag: Tag 12345
dmi.board.name: ZX Series
dmi.board.vendor: COPELION INTERNATIONAL INC.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: COPELION INTERNATIONAL INC.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnINSYDECorp.:bvr1.07.06TCOP:bd10/14/2019:svnCOPELIONINTERNATIONALINC.:pnZXSeries:pvrNotApplicable:rvnCOPELIONINTERNATIONALINC.:rnZXSeries:rvrNotApplicable:cvnCOPELIONINTERNATIONALINC.:ct10:cvrN/A:
dmi.product.family: Not Applicable
dmi.product.name: ZX Series
dmi.product.sku: Not Applicable
dmi.product.version: Not Applicable
dmi.sys.vendor: COPELION INTERNATIONAL INC.
Please run these commands before and again after the bug occurs:
dmesg > dmesg.txt
lsusb > lsusb.txt
rfkill > rfkill.txt
and attach both sets of text files.