The bluez version hasn't changed (in any meaningful way) between cosmic
and disco. So I don't think that's the cause. Also, those log messages
are from the kernel.
Can you please try downgrading your kernel to something more like cosmic
(4.18) and tell us which versions do or don't have the bug?
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D
** Tags added: a2dp
** Tags added: disco regression-release
** Package changed: bluez (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1826274
Title:
Headset keeps disconnecting after upgrade to Disco
Status in linux package in Ubuntu:
Incomplete
Bug description:
I'm using Bose QC35 headset and Dell XPS 9570 laptop. It was working
perfectly on Cosmic, after upgrade to Disco when headsed is switched
to HSP/HFP mode in pavucontrol I'm getting bursts of following
messages in dmesg:
Apr 24 23:27:28 daffy kernel: [53021.123542] Bluetooth: hci0: SCO packet for
unknown connection handle 65534
Apr 24 23:27:28 daffy kernel: [53021.123551] Bluetooth: hci0: SCO packet for
unknown connection handle 0
Apr 24 23:27:28 daffy kernel: [53021.143555] Bluetooth: hci0: SCO packet for
unknown connection handle 63744
Apr 24 23:27:28 daffy kernel: [53021.153575] Bluetooth: hci0: SCO packet for
unknown connection handle 1
Apr 24 23:27:28 daffy kernel: [53021.173563] Bluetooth: hci0: SCO packet for
unknown connection handle 63744
Then, after at most a few minutes, after one of bursts like above,
pulseaudio reports:
Apr 24 23:27:28 daffy pulseaudio[2733]: W: [bluetooth] module-
bluez5-device.c: SCO packet received of unaligned size: 5 (the size
differs between runs)
And the headset is getting disconnected from pulseaudio - it's still
connected via Bluetooth, but it's status in pavucontrol switches to
'Disabled'.
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