https://bugzilla.kernel.org/show_bug.cgi?id=208015 Bug ID: 208015 Summary: Logitech K380 pairs but cannot connect Product: Drivers Version: 2.5 Kernel Version: 5.6.14-300.fc32.x86_64 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: gm4jervin@xxxxxxxxx Regression: No I have a logitech K380 which goes through the pair process, either from bluetoothctl or from the gnome bluetooth control panel, accepting the keystrokes for the pairing password, right up to the RETURN, and then the connection fails. At that point, bluetoothctl shows it as paired, but it cannot connect. Touching a key on the keyboard to get it to try to connect shows this in btmon. > HCI Event: Connect Request (0x04) plen 10 > #3535 [hci0] 4323.298970 Address: 34:88:5D:BA:B5:28 (Logitech Far East) Class: 0x000540 Major class: Peripheral (mouse, joystick, keyboards) Minor class: 0x10 Link type: ACL (0x01) < HCI Command: Accept Connection Request (0x01|0x0009) plen 7 #3536 [hci0] 4323.299047 Address: 34:88:5D:BA:B5:28 (Logitech Far East) Role: Master (0x00) > HCI Event: Command Status (0x0f) plen 4 > #3537 [hci0] 4323.300969 Accept Connection Request (0x01|0x0009) ncmd 1 Status: Success (0x00) > HCI Event: Role Change (0x12) plen 8 > #3538 [hci0] 4323.458938 Status: Success (0x00) Address: 34:88:5D:BA:B5:28 (Logitech Far East) Role: Master (0x00) > HCI Event: Connect Complete (0x03) plen 11 > #3539 [hci0] 4323.464949 Status: Success (0x00) Handle: 11 Address: 34:88:5D:BA:B5:28 (Logitech Far East) Link type: ACL (0x01) Encryption: Disabled (0x00) < HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2 #3540 [hci0] 4323.465091 Handle: 11 > HCI Event: Command Status (0x0f) plen 4 > #3541 [hci0] 4323.466939 Read Remote Supported Features (0x01|0x001b) ncmd 1 Status: Success (0x00) < HCI Command: Write Scan Enable (0x03|0x001a) plen 1 #3542 [hci0] 4323.466975 Scan enable: No Scans (0x00) > HCI Event: Command Complete (0x0e) plen 4 > #3543 [hci0] 4323.467935 Write Scan Enable (0x03|0x001a) ncmd 1 Status: Success (0x00) > HCI Event: Read Remote Supported Features (0x0b) plen 11 > #3544 [hci0] 4323.474969 Status: Success (0x00) Handle: 11 Features: 0xbc 0x04 0x82 0x78 0x00 0x06 0x79 0x83 Encryption Slot offset Timing accuracy Role switch Sniff mode Channel quality driven data rate (CQDDR) Paging parameter negotiation Broadcast Encryption Enhanced inquiry scan Interlaced inquiry scan Interlaced page scan RSSI with inquiry results Sniff subrating Pause encryption Extended Inquiry Response Secure Simple Pairing Encapsulated PDU Erroneous Data Reporting Non-flushable Packet Boundary Flag Link Supervision Timeout Changed Event Inquiry TX Power Level Extended features < HCI Command: Read Remote Extended Features (0x01|0x001c) plen 3 #3545 [hci0] 4323.475009 Handle: 11 Page: 1 > HCI Event: Command Status (0x0f) plen 4 > #3546 [hci0] 4323.475935 Read Remote Extended Features (0x01|0x001c) ncmd 1 Status: Success (0x00) > HCI Event: Link Key Request (0x17) plen 6 > #3547 [hci0] 4323.478966 Address: 34:88:5D:BA:B5:28 (Logitech Far East) < HCI Command: Link Key Request Reply (0x01|0x000b) plen 22 #3548 [hci0] 4323.479030 Address: 34:88:5D:BA:B5:28 (Logitech Far East) Link key: 5a101d47bab277b8dcf5520ed9cd905e > HCI Event: Read Remote Extended Features (0x23) plen 13 > #3549 [hci0] 4323.479964 Status: Success (0x00) Handle: 11 Page: 1/1 Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 Secure Simple Pairing (Host Support) < ACL Data TX: Handle 11 flags 0x00 dlen 10 #3550 [hci0] 4323.480019 L2CAP: Information Request (0x0a) ident 1 len 2 Type: Extended features supported (0x0002) > HCI Event: Command Complete (0x0e) plen 10 > #3551 [hci0] 4323.483965 Link Key Request Reply (0x01|0x000b) ncmd 1 Status: Success (0x00) Address: 34:88:5D:BA:B5:28 (Logitech Far East) < HCI Command: Remote Name Request (0x01|0x0019) plen 10 #3552 [hci0] 4323.484029 Address: 34:88:5D:BA:B5:28 (Logitech Far East) Page scan repetition mode: R2 (0x02) Page scan mode: Mandatory (0x00) Clock offset: 0x0000 > HCI Event: Command Status (0x0f) plen 4 > #3553 [hci0] 4323.485932 Remote Name Request (0x01|0x0019) ncmd 1 Status: Success (0x00) > HCI Event: Remote Name Req Complete (0x07) plen 255 > #3554 [hci0] 4323.506965 Status: Success (0x00) Address: 34:88:5D:BA:B5:28 (Logitech Far East) Name: Keyboard K380 @ MGMT Event: Device Connected (0x000b) plen 33 {0x0002} [hci0] 4323.507012 BR/EDR Address: 34:88:5D:BA:B5:28 (Logitech Far East) Flags: 0x00000000 Data length: 20 Name (complete): Keyboard K380 Class: 0x000540 Major class: Peripheral (mouse, joystick, keyboards) Minor class: 0x10 @ MGMT Event: Device Connected (0x000b) plen 33 {0x0001} [hci0] 4323.507012 BR/EDR Address: 34:88:5D:BA:B5:28 (Logitech Far East) Flags: 0x00000000 Data length: 20 Name (complete): Keyboard K380 Class: 0x000540 Major class: Peripheral (mouse, joystick, keyboards) Minor class: 0x10 > HCI Event: Encryption Change (0x08) plen 4 > #3555 [hci0] 4323.511937 Status: Success (0x00) Handle: 11 Encryption: Enabled with E0 (0x01) < HCI Command: Read Encryption Key Size (0x05|0x0008) plen 2 #3556 [hci0] 4323.511970 Handle: 11 > HCI Event: Command Complete (0x0e) plen 7 > #3557 [hci0] 4323.512911 Read Encryption Key Size (0x05|0x0008) ncmd 1 Status: Success (0x00) Handle: 11 Key size: 16 > ACL Data RX: Handle 11 flags 0x02 dlen 16 > #3558 [hci0] 4323.515567 L2CAP: Information Response (0x0b) ident 1 len 8 Type: Extended features supported (0x0002) Result: Success (0x0000) Features: 0x000c200b Flow control mode Retransmission mode Enhanced Retransmission Mode Unknown features (0x000c2000) > ACL Data RX: Handle 8 flags 0x00 dlen 1 > #3559 [hci0] 4323.515575 frame too short 02 . > HCI Event: Number of Completed Packets (0x13) plen 5 > #3560 [hci0] 4323.687970 Num handles: 1 Handle: 11 Count: 1 < HCI Command: Disconnect (0x01|0x0006) plen 3 #3561 [hci0] 4327.542193 Handle: 11 Reason: Remote User Terminated Connection (0x13) > HCI Event: Command Status (0x0f) plen 4 > #3562 [hci0] 4327.652689 Disconnect (0x01|0x0006) ncmd 1 Status: Success (0x00) > HCI Event: Disconnect Complete (0x05) plen 4 > #3563 [hci0] 4327.726690 Status: Success (0x00) Handle: 11 Reason: Connection Terminated By Local Host (0x16) @ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0002} [hci0] 4327.726746 BR/EDR Address: 34:88:5D:BA:B5:28 (Logitech Far East) Reason: Connection terminated by local host (0x02) @ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0001} [hci0] 4327.726746 BR/EDR Address: 34:88:5D:BA:B5:28 (Logitech Far East) Reason: Connection terminated by local host (0x02) < HCI Command: Write Scan Enable (0x03|0x001a) plen 1 #3564 [hci0] 4327.744330 Scan enable: Page Scan (0x02) > HCI Event: Command Complete (0x0e) plen 4 > #3565 [hci0] 4327.745663 Write Scan Enable (0x03|0x001a) ncmd 1 Status: Success (0x00) **************************************************************** If I try to initiate the connection from bluetoothctl instead of from the keyboard, the btmon output is slightly different, and much shorter: < HCI Command: Create Connection (0x01|0x0005) plen 13 #3566 [hci0] 4417.886051 Address: 34:88:5D:BA:B5:28 (Logitech Far East) Packet type: 0xcc18 DM1 may be used DH1 may be used DM3 may be used DH3 may be used DM5 may be used DH5 may be used Page scan repetition mode: R2 (0x02) Page scan mode: Mandatory (0x00) Clock offset: 0x0000 Role switch: Allow slave (0x01) > HCI Event: Command Status (0x0f) plen 4 > #3567 [hci0] 4417.997065 Create Connection (0x01|0x0005) ncmd 1 Status: Success (0x00) > HCI Event: Connect Complete (0x03) plen 11 > #3568 [hci0] 4423.198882 Status: Page Timeout (0x04) Handle: 12 Address: 34:88:5D:BA:B5:28 (Logitech Far East) Link type: ACL (0x01) Encryption: Disabled (0x00) @ MGMT Event: Connect Failed (0x000d) plen 8 {0x0002} [hci0] 4423.198916 BR/EDR Address: 34:88:5D:BA:B5:28 (Logitech Far East) Status: Connect Failed (0x04) @ MGMT Event: Connect Failed (0x000d) plen 8 {0x0001} [hci0] 4423.198916 BR/EDR Address: 34:88:5D:BA:B5:28 (Logitech Far East) Status: Connect Failed (0x04) = bluetoothd: 34:88:5D:BA:B5:28: error updating services: Host is down (112) 4423.199390 ***************************************************************** I regularly use this keyboard on my Windows10 laptop and my android tablet, and it works perfectly in those environments. There have been times when somehow the keyboard and BlueZ seem to get into a happy state and the pairing and connection will work, and then the keyboard will connect successfully for several days of use,...and then it will disconnect spontaneously while I'm typing,...just *bam*,...keyboard is gone and now it cannot connect again. I've not found any reliable way of getting it to connect. Just try pairing and connecting over and over and then after 100 tries or so it'll connect and work for a few days. The Logitech K380 is a current shipping product, and I *love* this keyboard. I'm ready to dive in on this to get to the bottom of it, at least in terms of doing experiments and providing logs. I'm not a programmer. -- You are receiving this mail because: You are the assignee for the bug.
