##### PROBLEM #################################
I have a bluetooth device that was connecting fine with RPi4 with buster after the GUI has loaded but I am now having problems with the connection after boot and with reconnecting once disconnected. The error shows like the device is down but it is not.
pi@raspberrypi:~ $ systemctl status bluetooth
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset
Active: active (running) since Tue 2021-03-09 12:00:31 CET; 1h 18min ago
Docs: man:bluetoothd(8)
Main PID: 739 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 4915)
CGroup: /system.slice/bluetooth.service
└─739 /usr/lib/bluetooth/bluetoothd
mar 09 12:04:16 raspberrypi bluetoothd[739]: Can't get HIDP connection info
mar 09 12:04:21 raspberrypi bluetoothd[739]: connect error: Host is down (112)
mar 09 12:04:37 raspberrypi bluetoothd[739]: Can't get HIDP connection info
mar 09 12:04:43 raspberrypi bluetoothd[739]: connect error: Host is down (112)
mar 09 12:06:24 raspberrypi bluetoothd[739]: Can't get HIDP connection info
mar 09 12:06:29 raspberrypi bluetoothd[739]: connect error: Host is down (112)
mar 09 12:34:27 raspberrypi bluetoothd[739]: Can't get HIDP connection info
mar 09 12:34:32 raspberrypi bluetoothd[739]: connect error: Host is down (112)
mar 09 13:18:42 raspberrypi bluetoothd[739]: Can't get HIDP connection info
mar 09 13:18:47 raspberrypi bluetoothd[739]: connect error: Host is down (112)
pi@raspberrypi:~ $ bluetoothctl
Agent registered
[BLOW-BK105]# devices
Device 90:50:7B:87:90:02 powerSCANNDY07474838
Device A1:18:81:12:26:16 BLOW-BK105
Device 00:00:10:00:01:64 Trust-MS-01
[BLOW-BK105]# info 90:50:7B:87:90:02
Device 90:50:7B:87:90:02 (public)
Name: powerSCANNDY07474838
Alias: powerSCANNDY07474838
Class: 0x00002540
Icon: input-keyboard
Paired: yes
Trusted: yes
Blocked: no
Connected: no
LegacyPairing: no
UUID: Human Interface Device... (00001124-0000-1000-8000-00805f9b34fb)
[BLOW-BK105]# connect 90:50:7B:87:90:02
Attempting to connect to 90:50:7B:87:90:02
Failed to connect: org.bluez.Error.Failed
[BLOW-BK105]#
Below is the content of the file /var/lib/bluetooth/<adapter mac>/<device mac>/info
:
[General]
Name=powerSCANNDY07474838
Class=0x002540
SupportedTechnologies=BR/EDR;
Trusted=true
Blocked=false
Services=00001124-0000-1000-8000-00805f9b34fb;
[LinkKey]
Key=E121F0AE8C741F5D8F988F41CABB2200
Type=5
PINLength=0
##### QUESTION #################################
I have reinstalled the bundle bluez, bluez-firmware, pi-bluetooth
but nothing changed. Any suggestions?
##### UPDATE n.1 ###############################
Below is the output of dmesg
. I do not see anything particular going on with powerSCANNDY07474838 Keyboard
. The output is the same as when working correctly.
Mar 11 12:45:22 raspberrypi kernel: [ 15.581682] Bluetooth: Core ver 2.22
Mar 11 12:45:22 raspberrypi kernel: [ 15.582520] NET: Registered protocol family 31
Mar 11 12:45:22 raspberrypi kernel: [ 15.582533] Bluetooth: HCI device and connection manager initialized
Mar 11 12:45:23 raspberrypi kernel: [ 15.583867] Bluetooth: HCI socket layer initialized
Mar 11 12:45:23 raspberrypi kernel: [ 15.583879] Bluetooth: L2CAP socket layer initialized
Mar 11 12:45:23 raspberrypi kernel: [ 15.583902] Bluetooth: SCO socket layer initialized
Mar 11 12:45:23 raspberrypi kernel: [ 15.601064] Bluetooth: HCI UART driver ver 2.3
Mar 11 12:45:23 raspberrypi kernel: [ 15.601075] Bluetooth: HCI UART protocol H4 registered
Mar 11 12:45:23 raspberrypi kernel: [ 15.601137] Bluetooth: HCI UART protocol Three-wire (H5) registered
Mar 11 12:45:23 raspberrypi kernel: [ 15.603740] Bluetooth: HCI UART protocol Broadcom registered
Mar 11 12:45:23 raspberrypi kernel: [ 15.972292] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
Mar 11 12:45:23 raspberrypi kernel: [ 15.972301] Bluetooth: BNEP filters: protocol multicast
Mar 11 12:45:23 raspberrypi kernel: [ 15.972314] Bluetooth: BNEP socket layer initialized
Mar 11 12:45:40 raspberrypi kernel: [ 32.901282] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
Mar 11 12:45:40 raspberrypi kernel: [ 32.901297] Bluetooth: HIDP socket layer initialized
Mar 11 12:45:41 raspberrypi kernel: [ 33.722906] hid-generic 0005:0000:0000.0001: unknown main item tag 0x0
Mar 11 12:45:41 raspberrypi kernel: [ 33.724250] input: powerSCANNDY07474838 Keyboard as /devices/platform/soc/fe201000.serial/tty/ttyAMA0/hci0/hci0:12/0005:0000:0000.0001/input/input1
Mar 11 12:45:41 raspberrypi kernel: [ 33.726134] input: powerSCANNDY07474838 Consumer Control as /devices/platform/soc/fe201000.serial/tty/ttyAMA0/hci0/hci0:12/0005:0000:0000.0001/input/input2
Mar 11 12:45:41 raspberrypi kernel: [ 33.727233] hid-generic 0005:0000:0000.0001: input,hidraw0: BLUETOOTH HID v0.00 Keyboard [powerSCANNDY07474838] on dc:a6:32:bc:3d:49
Mar 11 13:10:19 raspberrypi kernel: [ 63.229238] hid-generic 0005:046D:B016.0002: unknown main item tag 0x0
Mar 11 13:10:19 raspberrypi kernel: [ 63.229481] input: Trust-MS-01 Mouse as /devices/platform/soc/fe201000.serial/tty/ttyAMA0/hci0/hci0:11/0005:046D:B016.0002/input/input3
Mar 11 13:10:19 raspberrypi kernel: [ 63.237729] input: Trust-MS-01 Consumer Control as /devices/platform/soc/fe201000.serial/tty/ttyAMA0/hci0/hci0:11/0005:046D:B016.0002/input/input4
Mar 11 13:10:19 raspberrypi kernel: [ 63.237940] hid-generic 0005:046D:B016.0002: input,hidraw0: BLUETOOTH HID v1.29 Mouse [Trust-MS-01] on dc:a6:32:bc:3d:49
Mar 11 13:11:00 raspberrypi kernel: [ 104.221373] v3d fec00000.v3d: MMU error from client L2T (0) at 0x19c1000, pte invalid
Mar 11 13:13:17 raspberrypi kernel: [ 241.429342] hid-generic 0005:05AC:0220.0003: unknown main item tag 0x0
Mar 11 13:13:17 raspberrypi kernel: [ 241.429571] input: BLOW-BK105 Keyboard as /devices/platform/soc/fe201000.serial/tty/ttyAMA0/hci0/hci0:12/0005:05AC:0220.0003/input/input6
Mar 11 13:13:17 raspberrypi kernel: [ 241.430065] input: BLOW-BK105 Consumer Control as /devices/platform/soc/fe201000.serial/tty/ttyAMA0/hci0/hci0:12/0005:05AC:0220.0003/input/input7
Mar 11 13:13:17 raspberrypi kernel: [ 241.430223] hid-generic 0005:05AC:0220.0003: input,hidraw1: BLUETOOTH HID v0.01 Keyboard [BLOW-BK105] on dc:a6:32:bc:3d:49
Output of journalctl:
pi@raspberrypi:~ $ journalctl -f -u bluetooth.service
-- Logs begin at Thu 2021-03-11 17:06:55 CET. --
mar 11 17:07:06 raspberrypi systemd[1]: Started Bluetooth service.
mar 11 17:07:06 raspberrypi bluetoothd[826]: Starting SDP server
mar 11 17:07:06 raspberrypi bluetoothd[826]: Bluetooth management interface 1.18 initialized
mar 11 17:07:06 raspberrypi bluetoothd[826]: Sap driver initialization failed.
mar 11 17:07:06 raspberrypi bluetoothd[826]: sap-server: Operation not permitted (1)
mar 11 17:07:07 raspberrypi bluetoothd[826]: Endpoint registered: sender=:1.30 path=/MediaEndpoint/A2DPSource
mar 11 17:07:07 raspberrypi bluetoothd[826]: Endpoint registered: sender=:1.30 path=/MediaEndpoint/A2DPSink
mar 11 17:07:07 raspberrypi bluetoothd[826]: Failed to set privacy: Rejected (0x0b)
mar 11 17:07:23 raspberrypi bluetoothd[826]: Can't get HIDP connection info
mar 11 17:11:03 raspberrypi bluetoothd[826]: Can't get HIDP connection info
##### UPDATE n.2 ###############################
It does not solve the issue deactivating the SIM Access Profile (SAP) by editing /etc/systemd/system/bluetooth.target.wants/bluetooth.service
and changing ExecStart=/usr/lib/bluetooth/bluetoothd
into ExecStart=/usr/lib/bluetooth/bluetoothd --noplugin=sap
##### UPDATE n.3 ###############################
I gave a try to bluez 5.55, 5.56 and 5.48 and it did not help. Neither did putting systemctl start bluetooth
in a bash file and run it before my app.
##### UPDATE n.4 ###############################
Updated the bt SPP config but it did not helped:
pi@raspberrypi:~ $ bluetoothctl
Agent registered
[BLOW-BK105]# connect 90:50:7B:87:90:02
Attempting to connect to 90:50:7B:87:90:02
[CHG] Device 90:50:7B:87:90:02 Connected: yes
Failed to connect: org.bluez.Error.Failed
[CHG] Device 90:50:7B:87:90:02 Connected: no
[BLOW-BK105]# exit
pi@raspberrypi:~ $ journalctl -f -u bluetooth.service
-- Logs begin at Mon 2021-03-15 10:40:29 CET. --
mar 15 10:40:41 raspberrypi systemd[1]: Starting Bluetooth service...
mar 15 10:40:41 raspberrypi bluetoothd[709]: Bluetooth daemon 5.56
mar 15 10:40:41 raspberrypi systemd[1]: Started Bluetooth service.
mar 15 10:40:41 raspberrypi bluetoothd[709]: Starting SDP server
mar 15 10:40:41 raspberrypi bluetoothd[709]: Bluetooth management interface 1.18 initialized
mar 15 10:40:41 raspberrypi bluetoothd[709]: Failed to set privacy: Rejected (0x0b)
mar 15 10:40:59 raspberrypi bluetoothd[709]: profiles/input/device.c:ioctl_is_connected() Can't get HIDP connection info
mar 15 10:41:00 raspberrypi bluetoothd[709]: profiles/input/device.c:control_connect_cb() connect to 90:50:7B:87:90:02: Connection refused (111)
mar 15 10:41:28 raspberrypi bluetoothd[709]: profiles/input/device.c:ioctl_is_connected() Can't get HIDP connection info
mar 15 10:41:29 raspberrypi bluetoothd[709]: profiles/input/device.c:control_connect_cb() connect to 90:50:7B:87:90:02: Connection refused (111)
^C
pi@raspberrypi:~ $ bluetoothctl
Agent registered
[BLOW-BK105]# info 90:50:7B:87:90:02
Device 90:50:7B:87:90:02 (public)
Name: powerSCANNDY07474838
Alias: powerSCANNDY07474838
Class: 0x00002540
Icon: input-keyboard
Paired: yes
Trusted: yes
Blocked: no
Connected: no
WakeAllowed: yes
LegacyPairing: no
UUID: Human Interface Device... (00001124-0000-1000-8000-00805f9b34fb)
[BLOW-BK105]#