I noticed this as well, usually testing other kernels is the most likely thing that will fix that.
Test the linux , linux-mainline , and linux-hardened kernels as well.
You could also try replacing the Bluetooth management utility bluez with blueman. To install the blueman package, issue the following command:
sudo pacman -S blueman
If none of the above suggestions helped then try the procedure below:
A network adapter not being detected properly can sometimes be corrected by power cycling and resetting the BIOS back to the factory default. Firstly, disconnect any other network devices that do not require troubleshooting. This includes LAN cables, USB WiFi or Ethernet adapters, and USB phone tethering.
Power down the computer, and the remove the PSU power plug. Let the computer sit without power for a few minutes. Then, hold down the power button for approximately 30 seconds. Pressing the power button will help drain all residual power from the unit’s circuit board. Then reattach the AC power cord, and restart. After booting into Garuda check if your adapter is now properly detected.
If your adapter is still not properly detected, then resetting your bios may help. Boot into your bios, then reset the bios to the factory defaults, then save the default settings. After doing this you will need to change some BIOS settings for best Linux compatibility. Some settings that you will need to disable include secure boot. fastboot, and RAID or RST (change to AHCI).
After resetting the bios to the factory defaults hopefully your adapter will be properly detected and initialized. Sometimes a BIOS update can also help to fix a device that is not detected or initialized properly.
Good luck finding your fix.