** Changed in: linux-firmware (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1968604
Title:
rtl8761b usb bluetooth doesn't work following reboot until
unplug/replug
Status in linux-firmware package in Ubuntu:
Fix Released
Status in linux-firmware source package in Jammy:
Fix Released
Status in linux-firmware source package in Kinetic:
Fix Released
Status in linux-firmware source package in Lunar:
Fix Released
Bug description:
[Impact]
I have usb bluetooth 5.0 dongle which uses Realtek RTL8761B chip.
0bda:8771 Realtek Semiconductor Corp. Bluetooth Radio
USB adapter very often stops working, can't connect or find other
bluetooth devices. The adapter can't work even after reboots.
The following entries appear in the log:
апр 11 13:47:14 desktop kernel: Bluetooth: hci0: command 0x2005 tx timeout
апр 11 13:47:16 desktop kernel: Bluetooth: hci0: command 0x2041 tx timeout
апр 11 13:47:18 desktop kernel: Bluetooth: hci0: command 0x2042 tx timeout
Firmware loaded correctly, but something is not working.
апр 11 13:46:54 desktop kernel: Bluetooth: hci0: RTL: examining hci_ver=0a
hci_rev=000b lmp_ver=0a lmp_subver=8761
апр 11 13:46:54 desktop kernel: Bluetooth: hci0: RTL: rom_version status=0
version=1
апр 11 13:46:54 desktop kernel: Bluetooth: hci0: RTL: loading
rtl_bt/rtl8761bu_fw.bin
апр 11 13:46:54 desktop kernel: Bluetooth: hci0: RTL: loading
rtl_bt/rtl8761bu_config.bin
апр 11 13:46:54 desktop kernel: Bluetooth: hci0: RTL: cfg_sz 6, total sz 27814
1) I use:
Description: Ubuntu Jammy Jellyfish (development branch)
Release: 22.04
2) linux-firmware: 20220329.git681281e4-0ubuntu1
3) What you expected to happen? I expect a well working bluetooth adapter.
4) What happened instead? My bluetooth adapter may work, may not. The adapter
may stop finding and connecting to other devices.
I've found the same bug https://bugzilla.kernel.org/show_bug.cgi?id=214111#c1
I've downloaded Windows's archive
http://download.windowsupdate.com/d/msdownload/update/driver/drvs/2021/05/ca0e770c-6a5d-4de0-b37a-f4b91cccd8c3_7778831d2b9d721cf94d5a8d8c0676ff1b96c874.cab
I've unpacked file rtl8761b_mp_chip_bt40_fw_asic_rom_patch_new.dll and
replaced /usr/lib/firmware/rtl_bt/rtl8761bu_fw.bin and deleted
rtl8761bu_config.bin
After I changed firmware my usb dongle work fine.
Could you change firmware rtl8761bu_fw.bin rtl8761bu_config.bin to other
correct version?
Could you move Realtek's rtl_bt firmware or RTL8761B's firmware into separate
packages. I will remove the RTL8761B firmware package and put them manually.
bluetoothctl --version
bluetoothctl: 5.64
hci0: Type: Primary Bus: USB
BD Address: 00:E0:4C:FC:E2:03 ACL MTU: 1021:6 SCO MTU: 255:12
UP RUNNING
RX bytes:5751 acl:49 sco:0 events:489 errors:0
TX bytes:219114 acl:398 sco:0 commands:83 errors:0
Features: 0xff 0xff 0xff 0xfe 0xdb 0xfd 0x7b 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH HOLD SNIFF PARK
Link mode: PERIPHERAL ACCEPT
Name: 'desktop'
Class: 0x7c0104
Service Classes: Rendering, Capturing, Object Transfer, Audio,
Telephony
Device Class: Computer, Desktop workstation
HCI Version: 5.1 (0xa) Revision: 0x97b
LMP Version: 5.1 (0xa) Subversion: 0xec43
Manufacturer: Realtek Semiconductor Corporation (93)
rfkill list
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
Realtek's worker updated these bad firmware.
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=45dc5f0b8e2f2d43312d22511cb26658b9ee2c80
[Test Case]
Connect to and use a bluetooth device connected to a RTL8761B base USB
BT controller.
[Fix]
Use latest rtl8761bu firmware blobs updates from linux-firmware.
[Where Problems Could Occur]
These firmwares are specific for the rtl8671b chips. So users of USB
or UART BT controllers based on that chip could see problems when
trying to connect to and use bluetooth devices.
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