Closer, at least now running grep -i “blue” returns something. previously it didn’t. Here is the output
# hciattach /dev/ttyS1 any 115200
Device setup complete
# dmesg | grep -i "blue"
[ 62.504341] Bluetooth: Core ver 2.22
[ 62.504502] NET: Registered PF_BLUETOOTH protocol family
[ 62.504512] Bluetooth: HCI device and connection manager initialized
[ 62.504535] Bluetooth: HCI socket layer initialized
[ 62.504547] Bluetooth: L2CAP socket layer initialized
[ 62.504571] Bluetooth: SCO socket layer initialized
[ 62.557337] Bluetooth: HCI UART driver ver 2.3
[ 62.557378] Bluetooth: HCI UART protocol H4 registered
[ 62.557386] Bluetooth: HCI UART protocol BCSP registered
[ 62.557497] Bluetooth: HCI UART protocol LL registered
[ 62.557505] Bluetooth: HCI UART protocol ATH3K registered
[ 62.557549] Bluetooth: HCI UART protocol Three-wire (H5) registered
[ 62.557761] Bluetooth: HCI UART protocol Broadcom registered
[ 63.368321] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 63.368353] Bluetooth: BNEP filters: protocol multicast
[ 63.368378] Bluetooth: BNEP socket layer initialized
[ 64.606457] Bluetooth: hci0: command 0x1003 tx timeout
[ 64.611720] Bluetooth: hci0: Opcode 0x1003 failed: -110
# systemctl status bluetooth.service
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; preset: enabled)
Active: active (running) since Fri 2023-06-30 07:48:05 PDT; 57s ago
Docs: man:bluetoothd(8)
Main PID: 1534 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 2027)
Memory: 1.7M
CPU: 216ms
CGroup: /system.slice/bluetooth.service
└─1534 /usr/libexec/bluetooth/bluetoothd
Jun 30 07:48:05 bluetoothd[1534]: Bluetooth daemon 5.66
Jun 30 07:48:05 systemd[1]: Started bluetooth.service - Bluetooth service.
Jun 30 07:48:05 bluetoothd[1534]: Starting SDP server
Jun 30 07:48:05 bluetoothd[1534]: profiles/audio/vcp.c:vcp_init() D-Bus experimental not enabled
Jun 30 07:48:05 bluetoothd[1534]: src/plugin.c:plugin_init() Failed to init vcp plugin
Jun 30 07:48:05 bluetoothd[1534]: profiles/audio/mcp.c:mcp_init() D-Bus experimental not enabled
Jun 30 07:48:05 bluetoothd[1534]: src/plugin.c:plugin_init() Failed to init mcp plugin
Jun 30 07:48:05 bluetoothd[1534]: profiles/audio/bap.c:bap_init() D-Bus experimental not enabled
Jun 30 07:48:05 bluetoothd[1534]: src/plugin.c:plugin_init() Failed to init bap plugin
Jun 30 07:48:05 bluetoothd[1534]: Bluetooth management interface 1.22 initialized
# bluetoothctl
Agent registered
[bluetooth]# list
[bluetooth]#