[SOLVED] Unable to use onboard bluetooth on Pi Zero 2 W (due to a defective board)

[TheOldPresbyope]

Oops, I wasn't paying attention to how I captured my previous snippet and left off the beginning messages related to BT hardware initialization.

Here's the missing bits (different boot/test but same configuration as before)

Code:

Dec  5 07:53:30 testzero2w systemd[1]: Starting Configure Bluetooth Modems connected by UART...
Dec  5 07:53:30 testzero2w kernel: [  627.743375] uart-pl011 3f201000.serial: no DMA platform data
Dec  5 07:53:36 testzero2w kernel: [  633.185900] Bluetooth: Core ver 2.22
Dec  5 07:53:36 testzero2w kernel: [  633.186006] NET: Registered protocol family 31
Dec  5 07:53:36 testzero2w kernel: [  633.186017] Bluetooth: HCI device and connection manager initialized
Dec  5 07:53:36 testzero2w kernel: [  633.186047] Bluetooth: HCI socket layer initialized
Dec  5 07:53:36 testzero2w kernel: [  633.186065] Bluetooth: L2CAP socket layer initialized
Dec  5 07:53:36 testzero2w kernel: [  633.186097] Bluetooth: SCO socket layer initialized
Dec  5 07:53:36 testzero2w kernel: [  633.198897] Bluetooth: HCI UART driver ver 2.3
Dec  5 07:53:36 testzero2w kernel: [  633.198917] Bluetooth: HCI UART protocol H4 registered
Dec  5 07:53:36 testzero2w kernel: [  633.199034] Bluetooth: HCI UART protocol Three-wire (H5) registered
Dec  5 07:53:36 testzero2w kernel: [  633.199338] Bluetooth: HCI UART protocol Broadcom registered
Dec  5 07:53:36 testzero2w btuart[1621]: bcm43xx_init
Dec  5 07:53:36 testzero2w btuart[1621]: Flash firmware /lib/firmware/brcm/BCM43430B0.hcd
Dec  5 07:53:36 testzero2w btuart[1621]: Set BDADDR UART: b8:27:eb:04:b0:0f
Dec  5 07:53:36 testzero2w btuart[1621]: Set Controller UART speed to 3000000 bit/s
Dec  5 07:53:36 testzero2w btuart[1621]: Device setup complete
...remainder is the same as I posted previously, beginning with
...Starting Configure Bluetooth Modems connected by UART

Your log includes messages I don't see

Code:

Dec  5 02:29:12 moode btuart[1759]: Initialization timed out.
Dec  5 02:29:12 moode btuart[1759]: bcm43xx_init
Dec  5 02:29:12 moode systemd[1]: hciuart.service: Control process exited, code=exited, status=1/FAILURE

I don't know a good way to test the hypothesis that the BT transceiver (or supporting firmware) on your board is defective.

Incidentally, I noticed you ran your test with moOde in AP mode. I repeated my test in this mode just to be sure the hostapd package isn't interfering somehow. On my system, at least, it isn't.

Searching the InterWeb™ on the error messages turned up all sorts of hits but the ones I read dealt with different circumstances and different hardware and didn't cause the penny to drop for me. Maybe they would for someone else.

Regards,
Kent