[pulseaudio-tickets] [Bug 90027] Switching from A2DP to HSP produces noise

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90027

--- Comment #10 from Christian Kellner <gicmo at gnome.org> ---
hcidump log:

HCI sniffer - Bluetooth packet analyzer ver 5.44
device: hci0 snap_len: 1500 filter: 0xffffffffffffffff
> HCI Event: Connect Request (0x04) plen 10
    bdaddr 04:52:C7:60:D8:82 class 0x240418 type ACL
> HCI Event: Command Status (0x0f) plen 4
    Accept Connection Request (0x01|0x0009) status 0x00 ncmd 1
> HCI Event: Connect Complete (0x03) plen 11
    status 0x00 handle 256 bdaddr 04:52:C7:60:D8:82 type ACL encrypt 0x00
> HCI Event: Command Status (0x0f) plen 4
    Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 1
> HCI Event: Read Remote Supported Features (0x0b) plen 11
    status 0x00 handle 256
    Features: 0xff 0xff 0x8f 0xfe 0xdb 0xff 0x5b 0x87
> HCI Event: Command Status (0x0f) plen 4
    Read Remote Extended Features (0x01|0x001c) status 0x00 ncmd 1
> HCI Event: Read Remote Extended Features (0x23) plen 13
    status 0x00 handle 256 page 1 max 1
    Features: 0x03 0x00 0x00 0x00 0x00 0x00 0x00 0x00
> HCI Event: Command Status (0x0f) plen 4
    Remote Name Request (0x01|0x0019) status 0x00 ncmd 1
> HCI Event: Command Complete (0x0e) plen 10
    Link Key Request Reply (0x01|0x000b) ncmd 1
    status 0x00 bdaddr 04:52:C7:60:D8:82
> HCI Event: Remote Name Req Complete (0x07) plen 255
    status 0x00 bdaddr 04:52:C7:60:D8:82 name 'ck's quiet ears'
> HCI Event: Encrypt Change (0x08) plen 4
    status 0x00 handle 256 encrypt 0x01
> HCI Event: Command Complete (0x0e) plen 7
    Read Encryption Key Size (0x05|0x0008) ncmd 1
> HCI Event: Command Status (0x0f) plen 4
    Exit Sniff Mode (0x02|0x0004) status 0x00 ncmd 1
> HCI Event: Command Status (0x0f) plen 4
    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
> HCI Event: Synchronous Connect Complete (0x2c) plen 17
    status 0x00 handle 258 bdaddr 04:52:C7:60:D8:82 type eSCO
    Air mode: CVSD


The action taken during the logging period was: connect the headphones, switch
to them (A2DP profile), test the speaker (successfully) then switch to HSP
profile and testing again (blocks the UI).

Other relevant log messages (journal -r):
[... lots more of the following ...]
kernel: Bluetooth: hci0 SCO packet for unknown connection handle 258
kernel: Bluetooth: hci0 SCO packet for unknown connection handle 258
kernel: Bluetooth: hci0 SCO packet for unknown connection handle 258
bluetoothd[10708]: Unable to get io data for Headset Voice gateway:
getpeername: Transport endpoint is not connected (1

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