Quartz 4

Bluetooth connect failed br-connection-profile-unavailable.

1 min read

1. Check dmesg

sudo dmesg | grep -i -e bluetooth -e hci0
 
Bluetooth: Core ver 2.22
Bluetooth: HCI device and connection manager initialized
Bluetooth: hci0: HW/SW Version: 0x008a008a, Build Time: 20250625154126
Bluetooth: hci0: Device setup in 3255615 usecs
Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
Bluetooth: hci0: AOSP extensions version v1.00
Bluetooth: hci0: AOSP quality report is supported
Bluetooth: MGMT ver 1.23

Confirmed that the Bluetooth device (hci0) was detected, initialized, and not blocked. No hardware or driver errors were present.

2. Update Firmware

Ran:

sudo pacman -Syu linux-firmware

This installed the required MediaTek Bluetooth firmware used by the IMC Networks module.

3. Re-check dmesg

Commands:

sudo dmesg | grep -i -e bluetooth -e hci0

Verify:

  • hci0 initializes without error
  • No firmware load failures
  • No BR/EDR power errors
    After firmware update, dmesg showed proper initialization of hci0 with no fallback or BR/EDR-related errors.

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