Can you attached the full kernel log (output of dmesg) from the
beginning of boot?

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https://bugs.launchpad.net/bugs/2097681

Title:
  Bluetooth not working, firmware issue

Status in linux-firmware package in Ubuntu:
  Won't Fix

Bug description:
  $ lsb_release -rd
  No LSB modules are available.
  Description:  Ubuntu 24.04.1 LTS
  Release:      24.04


  
  Hello, 
  Installed lubuntu with ubuntu desktop on macbook pro 14. Got the audio and 
wifi working, now it is the bluetooth that is not working (also camera does not 
work, but that is a seperate ticket). on boot up I gett a message: (might nott 
be exact spelling)

  Bluetooth: hc10: failed to set baudratoclm_blob available
  brcafaac: brcaf_c_process_txcap_blob: no txcap_blob available

  when looking at firmware I get these errors:
  $ dmesg | grep -i firmware
  [    0.094904] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
  [    2.962727] brcmfmac 0000:02:00.0: Direct firmware load for 
brcm/brcmfmac4350c2-pcie.Apple Inc.-MacBookPro14,1.bin failed with error -2
  [    2.970379] brcmfmac 0000:02:00.0: Direct firmware load for 
brcm/brcmfmac4350c2-pcie.txt failed with error -2
  [    2.977520] brcmfmac 0000:02:00.0: Direct firmware load for 
brcm/brcmfmac4350c2-pcie.clm_blob failed with error -2
  [    2.977651] brcmfmac 0000:02:00.0: Direct firmware load for 
brcm/brcmfmac4350c2-pcie.txcap_blob failed with error -2
  [    3.460064] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4350/5 wl0: Nov 
26 2015 03:48:57 version 7.35.180.133 (r602372) FWID 01-c45b39d6
  [    3.488798] i915 0000:00:02.0: [drm] Finished loading DMC firmware 
i915/kbl_dmc_ver1_04.bin (v1.4)


  I tried installing the firmware like this without any luck:
  $ sudo apt install firmware-brcm4350
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  E: Unable to locate package firmware-brcm4350


  The weird thing is, sometimes on bootup the bluetooth does work and am
  able to connect to my wireless mouse, it is just very sparingly and
  not dependable. It is understandable that there are so much issues
  with macbooks, I am just trying to give it a new life.

  here are some message outputs:

  $ dmesg | grep -i bluetooth # Shows all Bluetooth driver info
  dmesg | grep -i bluetooth | grep -i firmware # Shows Bluetooth firmware issues
  [    2.747257] Bluetooth: Core ver 2.22
  [    2.747276] NET: Registered PF_BLUETOOTH protocol family
  [    2.747278] Bluetooth: HCI device and connection manager initialized
  [    2.747282] Bluetooth: HCI socket layer initialized
  [    2.747285] Bluetooth: L2CAP socket layer initialized
  [    2.747289] Bluetooth: SCO socket layer initialized
  [    2.840975] Bluetooth: HCI UART driver ver 2.3
  [    2.840979] Bluetooth: HCI UART protocol H4 registered
  [    2.840981] Bluetooth: HCI UART protocol BCSP registered
  [    2.841006] Bluetooth: HCI UART protocol LL registered
  [    2.841007] Bluetooth: HCI UART protocol ATH3K registered
  [    2.841021] Bluetooth: HCI UART protocol Three-wire (H5) registered
  [    2.841048] Bluetooth: HCI UART protocol Intel registered
  [    2.845863] Bluetooth: HCI UART protocol Broadcom registered
  [    2.845881] Bluetooth: HCI UART protocol QCA registered
  [    2.845883] Bluetooth: HCI UART protocol AG6XX registered
  [    2.845894] Bluetooth: HCI UART protocol Marvell registered
  [    4.219738] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [    4.219744] Bluetooth: BNEP filters: protocol multicast
  [    4.219748] Bluetooth: BNEP socket layer initialized
  [    5.157820] Bluetooth: hci0: command 0xfc18 tx timeout
  [    5.157830] Bluetooth: hci0: BCM: failed to write update baudrate (-110)
  [    5.157834] Bluetooth: hci0: Failed to set baudrate
  [    7.206170] Bluetooth: hci0: command 0xfc18 tx timeout
  [    7.206185] Bluetooth: hci0: BCM: Reset failed (-110)

  
  would I be able to get the firmware elsewhere? for example:

  https://repology.org/project/broadcom-bt-firmware/versions

  Would greatly appreciate the guidance.

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