APPLIED: [SRU][J/K/L:linux-firmware][PULL] rtl8761b usb bluetooth doesn't work following reboot until unplug/replug (LP: #1968604)

[Juerg Haefliger]

Applied to linux-firmware jammy, kinetic and lunar branches.

...Juerg


On Thu, 11 May 2023 12:27:15 +0200
Juerg Haefliger <juerg.haefliger at canonical.com> wrote:

> BugLink: https://bugs.launchpad.net/bugs/1968604
> 
> 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
> 
> Signed-off-by: Juerg Haefliger <juerg.haefliger at canonical.com>
> 
> --------
> 
> The following changes since commit ad66fa319881c1faac692dce835638804c98c8a1:
> 
>   UBUNTU: Ubuntu-20230323.gitbcdcfbcf-0ubuntu1.1 (2023-05-05 11:57:05 +0200)
> 
> are available in the Git repository at:
> 
>   https://git.launchpad.net/~juergh/+git/linux-firmware lp1968604/lunar
> 
> for you to fetch changes up to d161f1f8bf9c90ef32987ed99a3d4fc55c422c1c:
> 
>   rtl_bt: Update RTL8761B BT USB firmware to 0xDFC6_D922 (2023-05-11 11:25:16 +0200)
> 
> ----------------------------------------------------------------
> Hilda Wu (2):
>       rtl_bt: Update RTL8761B BT UART firmware to 0x9DC6_D922
>       rtl_bt: Update RTL8761B BT USB firmware to 0xDFC6_D922
> 
>  rtl_bt/rtl8761b_fw.bin  | Bin 44204 -> 45444 bytes
>  rtl_bt/rtl8761bu_fw.bin | Bin 42088 -> 44484 bytes
>  2 files changed, 0 insertions(+), 0 deletions(-)

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