[Bug 1745828] Re: Ubuntu 16.04 can't find any Bluetooth devices

[Daniel van Vugt]

Thanks.

Yes you can ignore bug 1542743 now. I was confused by your mentioning
"AR3012" but it turns out you don't have one of them. It was only a
diagnostic question you pasted.

I can see that you have a:

  Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless
Network Adapter

which seems to be loading wifi firmware OK and then not so OK for
Bluetooth...

[   13.648049] Bluetooth: hci0: rtl: loading rtl_bt/rtl8821a_config.bin
[   13.668472] rtl8821ae: Using firmware rtlwifi/rtl8821aefw_29.bin
[   13.668476] rtl8821ae: Using firmware rtlwifi/rtl8821aefw_wowlan.bin
...
[   13.702717] bluetooth hci0: Direct firmware load for rtl_bt/rtl8821a_config.bin failed with error -2
[   13.702719] Bluetooth: hci0: rtl: loading rtl_bt/rtl8821a_fw.bin

All the firmware files come from package 'linux-firmware'. The missing
file "rtl8821a_config.bin" may be the problem, or may not be...

It's also possible you need a fix in the kernel itself (package
'linux'), which is where the driver is that depends on having firmware
preloaded.

Just in case the latest kernel fixes this issue, please try installing one of the newest ones like 4.15 which was released this week:
  http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D

** Summary changed:

- Ubuntu 16.04 can't find any Bluetooth devices
+ [rtl8821a] Ubuntu 16.04 can't find any Bluetooth devices

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Title:
  [rtl8821a] Ubuntu 16.04 can't find any Bluetooth devices

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