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I have two bluetooth keyboards that both work perfectly with my android tablet, but randomly every 5-15 minutes will stop responding for about 15 seconds before reconnecting when I use them with my Dell XPS 13 9350 laptop running Arch.
This laptop came with a Broadcom wifi/bluetooth chip, which I thought might have buggy drivers/firmware, so I swapped it for a new Intel chip, but my problem persists.
When this issue occurs, I see this output in dmesg:
[42712.221880] hid-generic 0005:04E8:7021.0004: unknown main item tag 0x0
[42712.222147] input: Bluetooth 3.0 Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:256/0005:04E8:7021.0004/input/input30
[42712.224964] hid-generic 0005:04E8:7021.0004: input,hidraw1: BLUETOOTH HID v0.01 Keyboard [Bluetooth 3.0 Keyboard] on 00:28:f8:d6:c0:3fIs there anything else I can do to debug this issue?
EDIT:
Here's the output of btmon during one of the random disconnect (note the time between last recorded key press and it recovering is almost exactly 20 seconds..):
> ACL Data RX: Handle 256 flags 0x02 dlen 14 #236 [hci0] 163.218718
Channel: 65 len 10 [PSM 0 mode 0] {chan 0}
a1 01 00 00 2b 00 00 00 00 00 ....+.....
> ACL Data RX: Handle 256 flags 0x02 dlen 14 #237 [hci0] 163.421257
Channel: 65 len 10 [PSM 0 mode 0] {chan 0}
a1 01 00 00 00 00 00 00 00 00 ..........
> ACL Data RX: Handle 256 flags 0x02 dlen 14 #238 [hci0] 164.096246
Channel: 65 len 10 [PSM 0 mode 0] {chan 0}
a1 01 00 00 28 00 00 00 00 00 ....(.....
> ACL Data RX: Handle 256 flags 0x02 dlen 14 #239 [hci0] 164.254743
Channel: 65 len 10 [PSM 0 mode 0] {chan 0}
a1 01 00 00 00 00 00 00 00 00 ..........
> HCI Event: Disconnect Complete (0x05) plen 4 #240 [hci0] 184.256542
Status: Success (0x00)
Handle: 256
Reason: Connection Timeout (0x08)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0003} [hci0] 184.256603
BR/EDR Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Reason: Connection timeout (0x01)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0002} [hci0] 184.256603
BR/EDR Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Reason: Connection timeout (0x01)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0001} [hci0] 184.256603
BR/EDR Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Reason: Connection timeout (0x01)
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1 #241 [hci0] 184.371099
Scan enable: Page Scan (0x02)
> HCI Event: Command Complete (0x0e) plen 4 #242 [hci0] 184.372363
Write Scan Enable (0x03|0x001a) ncmd 2
Status: Success (0x00)
> HCI Event: Connect Request (0x04) plen 10 #243 [hci0] 185.701541
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Class: 0x000540
Major class: Peripheral (mouse, joystick, keyboards)
Minor class: 0x10
Link type: ACL (0x01)
< HCI Command: Accept Connection Request (0x01|0x0009) plen 7 #244 [hci0] 185.701622
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Role: Master (0x00)
> HCI Event: Command Status (0x0f) plen 4 #245 [hci0] 185.702374
Accept Connection Request (0x01|0x0009) ncmd 1
Status: Success (0x00)
> HCI Event: Role Change (0x12) plen 8 #246 [hci0] 185.844374
Status: Success (0x00)
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Role: Master (0x00)
> HCI Event: Connect Complete (0x03) plen 11 #247 [hci0] 186.030533
Status: Success (0x00)
Handle: 256
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Link type: ACL (0x01)
Encryption: Disabled (0x00)
< HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2 #248 [hci0] 186.030714
Handle: 256
> HCI Event: Command Status (0x0f) plen 4 #249 [hci0] 186.031365
Read Remote Supported Features (0x01|0x001b) ncmd 1
Status: Success (0x00)
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1 #250 [hci0] 186.031448
Scan enable: No Scans (0x00)
> HCI Event: Command Complete (0x0e) plen 4 #251 [hci0] 186.033358
Write Scan Enable (0x03|0x001a) ncmd 2
Status: Success (0x00)
> HCI Event: Max Slots Change (0x1b) plen 3 #252 [hci0] 186.036421
Handle: 256
Max slots: 5
> HCI Event: Read Remote Supported Features (0x0b) plen 11 #253 [hci0] 186.039422
Status: Success (0x00)
Handle: 256
Features: 0xbf 0x06 0x86 0x78 0x18 0x1e 0x59 0x87
3 slot packets
5 slot packets
Encryption
Slot offset
Timing accuracy
Role switch
Sniff mode
Power control requests
Channel quality driven data rate (CQDDR)
Paging parameter negotiation
Power control
Broadcast Encryption
Enhanced inquiry scan
Interlaced inquiry scan
Interlaced page scan
RSSI with inquiry results
AFH capable slave
AFH classification slave
Sniff subrating
Pause encryption
AFH capable master
AFH classification master
Extended Inquiry Response
Secure Simple Pairing
Encapsulated PDU
Non-flushable Packet Boundary Flag
Link Supervision Timeout Changed Event
Inquiry TX Power Level
Enhanced Power Control
Extended features
< HCI Command: Read Remote Extended Features (0x01|0x001c) plen 3 #254 [hci0] 186.039443
Handle: 256
Page: 1
> HCI Event: Command Status (0x0f) plen 4 #255 [hci0] 186.040365
Read Remote Extended Features (0x01|0x001c) ncmd 1
Status: Success (0x00)
> HCI Event: Read Remote Extended Features (0x23) plen 13 #256 [hci0] 186.046422
Status: Success (0x00)
Handle: 256
Page: 1/1
Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Secure Simple Pairing (Host Support)
< HCI Command: Remote Name Request (0x01|0x0019) plen 10 #257 [hci0] 186.046465
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Page scan repetition mode: R2 (0x02)
Page scan mode: Mandatory (0x00)
Clock offset: 0x0000
< ACL Data TX: Handle 256 flags 0x00 dlen 10 #258 [hci0] 186.046471
L2CAP: Information Request (0x0a) ident 1 len 2
Type: Extended features supported (0x0002)
> HCI Event: Command Status (0x0f) plen 4 #259 [hci0] 186.047380
Remote Name Request (0x01|0x0019) ncmd 1
Status: Success (0x00)
> HCI Event: Link Key Request (0x17) plen 6 #260 [hci0] 186.050413
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
< HCI Command: Link Key Request Reply (0x01|0x000b) plen 22 #261 [hci0] 186.050437
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Link key: f1d28a086486e3cacef8bfa597d32a59
> HCI Event: Number of Completed Packets (0x13) plen 5 #262 [hci0] 186.051353
Num handles: 1
Handle: 256
Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #263 [hci0] 186.052359
L2CAP: Information Response (0x0b) ident 1 len 8
Type: Extended features supported (0x0002)
Result: Success (0x0000)
Features: 0x00000280
Fixed Channels
Unicast Connectionless Data Reception
> HCI Event: Command Complete (0x0e) plen 10 #264 [hci0] 186.052367
Link Key Request Reply (0x01|0x000b) ncmd 1
Status: Success (0x00)
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
< ACL Data TX: Handle 256 flags 0x00 dlen 10 #265 [hci0] 186.052395
L2CAP: Information Request (0x0a) ident 2 len 2
Type: Fixed channels supported (0x0003)
> ACL Data RX: Handle 256 flags 0x02 dlen 20 #266 [hci0] 186.057128
L2CAP: Information Response (0x0b) ident 2 len 12
Type: Fixed channels supported (0x0003)
Result: Success (0x0000)
Channels: 0x0000000000000006
L2CAP Signaling (BR/EDR)
Connectionless reception
> HCI Event: Number of Completed Packets (0x13) plen 5 #267 [hci0] 186.060426
Num handles: 1
Handle: 256
Count: 1
> HCI Event: Remote Name Req Complete (0x07) plen 255 #268 [hci0] 186.065422
Status: Success (0x00)
Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Name: Bluetooth 3.0 Keyboard
@ MGMT Event: Device Connected (0x000b) plen 42 {0x0003} [hci0] 186.065468
BR/EDR Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Flags: 0x00000000
Data length: 29
Name (complete): Bluetooth 3.0 Keyboard
Class: 0x000540
Major class: Peripheral (mouse, joystick, keyboards)
Minor class: 0x10
@ MGMT Event: Device Connected (0x000b) plen 42 {0x0002} [hci0] 186.065468
BR/EDR Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Flags: 0x00000000
Data length: 29
Name (complete): Bluetooth 3.0 Keyboard
Class: 0x000540
Major class: Peripheral (mouse, joystick, keyboards)
Minor class: 0x10
@ MGMT Event: Device Connected (0x000b) plen 42 {0x0001} [hci0] 186.065468
BR/EDR Address: 20:73:65:4C:3B:04 (OUI 20-73-65)
Flags: 0x00000000
Data length: 29
Name (complete): Bluetooth 3.0 Keyboard
Class: 0x000540
Major class: Peripheral (mouse, joystick, keyboards)
Minor class: 0x10
> HCI Event: Encryption Change (0x08) plen 4 #269 [hci0] 186.090432
Status: Success (0x00)
Handle: 256
Encryption: Enabled with E0 (0x01)
< HCI Command: Read Encryption Key Size (0x05|0x0008) plen 2 #270 [hci0] 186.090502
Handle: 256
> HCI Event: Command Complete (0x0e) plen 7 #271 [hci0] 186.091359
Read Encryption Key Size (0x05|0x0008) ncmd 1
Status: Success (0x00)
Handle: 256
Key size: 16EDIT2:
I've enabled debugging in bluetooth.service and get a little more output:
Jan 12 10:16:20 xps bluetoothd[7937]: src/adapter.c:dev_disconnected() Device 20:73:65:4C:3B:04 disconnected, reason 1
Jan 12 10:16:20 xps bluetoothd[7937]: src/adapter.c:adapter_remove_connection()
Jan 12 10:16:20 xps bluetoothd[7937]: plugins/policy.c:disconnect_cb() reason 1
Jan 12 10:16:20 xps bluetoothd[7937]: src/adapter.c:bonding_attempt_complete() hci0 bdaddr 20:73:65:4C:3B:04 type 0 status 0xe
Jan 12 10:16:20 xps bluetoothd[7937]: src/device.c:device_bonding_complete() bonding (nil) status 0x0e
Jan 12 10:16:20 xps bluetoothd[7937]: src/device.c:device_bonding_failed() status 14
Jan 12 10:16:20 xps bluetoothd[7937]: src/adapter.c:resume_discovery()
Jan 12 10:16:20 xps bluetoothd[7937]: profiles/input/device.c:ctrl_watch_cb() Device 20:73:65:4C:3B:04 disconnected
Jan 12 10:16:20 xps bluetoothd[7937]: profiles/input/device.c:intr_watch_cb() Device 20:73:65:4C:3B:04 disconnected
Jan 12 10:16:20 xps bluetoothd[7937]: src/service.c:change_state() 0x55764aad6840: device 20:73:65:4C:3B:04 profile input-hid state changed: connec
Jan 12 10:16:20 xps bluetoothd[7937]: profiles/input/device.c:input_device_enter_reconnect_mode() path=/org/bluez/hci0/dev_20_73_65_4C_3B_04 reconn
Jan 12 10:16:22 xps bluetoothd[7937]: src/adapter.c:connected_callback() hci0 device 20:73:65:4C:3B:04 connected eir_len 29
Jan 12 10:16:22 xps bluetoothd[7937]: profiles/input/server.c:connect_event_cb() Incoming connection from 20:73:65:4C:3B:04 on PSM 17
Jan 12 10:16:22 xps bluetoothd[7937]: profiles/input/device.c:input_device_set_channel() idev 0x55764aadab40 psm 17
Jan 12 10:16:22 xps bluetoothd[7937]: profiles/input/server.c:confirm_event_cb()
Jan 12 10:16:22 xps bluetoothd[7937]: profiles/input/server.c:connect_event_cb() Incoming connection from 20:73:65:4C:3B:04 on PSM 19
Jan 12 10:16:22 xps bluetoothd[7937]: profiles/input/device.c:input_device_set_channel() idev 0x55764aadab40 psm 19
Jan 12 10:16:22 xps bluetoothd[7937]: src/service.c:change_state() 0x55764aad6840: device 20:73:65:4C:3B:04 profile input-hid state changed: discon
Jan 12 10:16:22 xps bluetoothd[7937]: plugins/policy.c:service_cb() Added input-hid reconnect 0
Jan 12 10:16:22 xps bluetoothd[7937]: profiles/input/device.c:encrypt_notify()
Jan 12 10:16:22 xps kernel: hid-generic 0005:04E8:7021.000F: unknown main item tag 0x0
Jan 12 10:16:22 xps kernel: input: Bluetooth 3.0 Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:256/0005:04E8:70
Jan 12 10:16:22 xps kernel: hid-generic 0005:04E8:7021.000F: input,hidraw1: BLUETOOTH HID v0.01 Keyboard [BluetoothEDIT3:
I'm pretty sure this a firmware bug for the Intel 8265 wireless chip I bought.. where should I report it?
Last edited by robsmith11 (2018-01-12 10:54:58)
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