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Re: Problems with Buster and Bluetooth


I need to correct my previous statements; I was previously running Stretch, not Jessie.  I hooked up my old hard drive and verified the versions I was using before:

bluez 5.43-2+deb9u1
pulseaudio-module-bluetooth 10.0-1+deb9u1

Everything worked under those versions, on Debian 9.

I'll give hcidump a try and see if that reveals anything I didn't see with btmon.  Thanks for the suggestion.  And as requested:

# hciconfig -a
hci0: Type: Primary  Bus: USB
BD Address: 5C:F3:70:8C:B7:98  ACL MTU: 1021:8  SCO MTU: 64:1
RX bytes:62062 acl:40 sco:0 events:3178 errors:0
TX bytes:499936 acl:776 sco:0 commands:1088 errors:38
Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH SNIFF
Name: 'debian'
Class: 0x100104
Service Classes: Object Transfer
Device Class: Computer, Desktop workstation
HCI Version: 4.0 (0x6)  Revision: 0x153a
LMP Version: 4.0 (0x6)  Subversion: 0x220e
Manufacturer: Broadcom Corporation (15)

# sdptool browse 9B:1F:48:B8:55:F6
Browsing 9B:1F:48:B8:55:F6 ...

(There's no other output from sdptool, it just exits back to the shell).


On Thu, Oct 3, 2019 at 6:20 PM deloptes <deloptes@gmail.com> wrote:
David Parker wrote:

> I'm starting to suspect that this is mostly a bluetooth issue and not
> really a PA one.  I struggle to get these earbuds connected whether
> PulseAudio is involved or not.  I can trust them and pair them just fine,
> but the actual connection generally fails, and when it does work, it
> doesn't stay connected for long.  I'm not sure how to check the BT power
> strength, but bluetoothctl reports that the controller is powered:

OK, but in Jessie you had bluez 5.23-2+deb8u1 and in Stretch 5.43-2+deb9u1
and in buster 5.50-1. Can you confirm which you had in Jessie and which in
what you use now?

PA is as following
        pulseaudio-module-bluetooth (5.0-13)
        pulseaudio-module-bluetooth (10.0-1+deb9u1)
        pulseaudio-module-bluetooth (12.2-4+deb10u1)

did you use PA in Jessie at all?

I also find it difficult debugging, I usually do both BT and PA but if you
think it is BT you can try hcidump (sudo hcidump -i hci0). You can also
monitor dbus
        $ dbus-monitor --system

and for the curiosity paste here output of
        $ hciconfig -a
        $ sdptool browse <earplugs mac>


Dave Parker '11
Database & Systems Administrator
Utica College
Integrated Information Technology Services
(315) 792-3229
Registered Linux User #408177

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