Unable to pair to Bluetooth earbuds on Eoan (MPOW M5)

[Johnny Ooi]

This is a clean install of Eoan (although I have copied the home directory files from my previous installation, though I don't think that should affect this problem)

A fresh pairing attempt gives this in the syslog:

```
Jan 26 20:46:37 johnny-W35xSS-370SS bluetoothd[887]: connect error: Connection refused (111)
Jan 26 20:46:37 johnny-W35xSS-370SS bluetoothd[887]: a2dp-source profile connect failed for 9A:25:5B:01:32:A8: Device or resource busy
Jan 26 20:46:37 johnny-W35xSS-370SS bluetoothd[887]: connect error: Connection refused (111)
Jan 26 20:46:37 johnny-W35xSS-370SS bluetoothd[887]: a2dp-source profile connect failed for 9A:25:5B:01:32:A8: Device or resource busy
Jan 26 20:46:38 johnny-W35xSS-370SS bluetoothd[887]: connect error: Connection refused (111)
Jan 26 20:46:38 johnny-W35xSS-370SS bluetoothd[887]: a2dp-source profile connect failed for 9A:25:5B:01:32:A8: Device or resource busy
Jan 26 20:46:38 johnny-W35xSS-370SS bluetoothd[887]: connect error: Connection refused (111)
Jan 26 20:46:38 johnny-W35xSS-370SS bluetoothd[887]: a2dp-source profile connect failed for 9A:25:5B:01:32:A8: Device or resource busy
Jan 26 20:46:39 johnny-W35xSS-370SS bluetoothd[887]: connect error: Connection refused (111)
Jan 26 20:46:39 johnny-W35xSS-370SS bluetoothd[887]: a2dp-source profile connect failed for 9A:25:5B:01:32:A8: Device or resource busy
Jan 26 20:46:40 johnny-W35xSS-370SS bluetoothd[887]: connect error: Connection refused (111)
Jan 26 20:46:40 johnny-W35xSS-370SS bluetoothd[887]: a2dp-source profile connect failed for 9A:25:5B:01:32:A8: Device or resource busy
```

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.3.0-26.28-generic 5.3.13
Uname: Linux 5.3.0-26-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: johnny 1571 F.... pulseaudio
 /dev/snd/controlC1: johnny 1571 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sun Jan 26 20:47:40 2020
InstallationDate: Installed on 2020-01-25 (1 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Title: Bluetooth sound card not detected
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/08/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W35xSS_370SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/08/2014:svnNotebook:pnW35xSS_370SS:pvrNotApplicable:rvnNotebook:rnW35xSS_370SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.family: Not Applicable
dmi.product.name: W35xSS_370SS
dmi.product.sku: Not Applicable
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook

[Johnny Ooi (johnny-jy-ooi+launchpad)]

Additional.

I got my hands on a different brand of headphones (Anker) to see if the manufacturer was the issue.

I still have the same problem.

TL;DR: Clean install of Eoan, bluetooth pairs then bluetooth restarts, over and over. Sometimes, I'm lucky and it will stay connected. Most of the time it restarts.

Same machine and headphones work fine under Windows 8.1