Bluetooth adaptor suddenly not found

[Colin Law]

On Wed, 18 Jan 2023, 14:42 Pete Smout, <smoutpete at gmail.com> wrote:

> Hi all,
> Running a fresh up-to-date version of (X)ubuntu on a new (to me) laptop.
> When I first installed it a week ago, bluetooth was working fine with
> no issues at all, at some point it stopped finding the adapter at
> boot.
> I've tried going back to a previous kernel with no luck.
> Result of lspi:
>
> pete at pete-Avita:~$ lspci
> 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Root Complex
> 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 IOMMU
> 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h
> (Models 00h-1fh) PCIe Dummy Host Bridge
> 00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Zeppelin Switch
> Upstream (PCIE SW.US)
> 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h
> (Models 00h-1fh) PCIe Dummy Host Bridge
> 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Internal PCIe GPP Bridge 0 to Bus A
> 00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Internal PCIe GPP Bridge 0 to Bus B
> 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller
> (rev 61)
> 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev
> 51)
> 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 0
> 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 1
> 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 2
> 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 3
> 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 4
> 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 5
> 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 6
> 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2
> Device 24: Function 7
> 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE
> 802.11ac PCIe Wireless Network Adapter
> 02:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
> [AMD/ATI] Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile
> Series] (rev c4)
> 02:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI]
> Raven/Raven2/Fenghuang HDMI/DP Audio Controller
> 02:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD]
> Family 17h (Models 10h-1fh) Platform Security Processor
> 02:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Raven2 USB 3.1
> 02:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD]
> Raven/Raven2/FireFlight/Renoir Audio Processor
> 02:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h
> (Models 10h-1fh) HD Audio Controller
> 03:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA
> Controller [AHCI mode] (rev 61)
>
> As you can see no bluetooth adapter found? It  was there where has it
> gone any clues?
>

Check in the bios/uefi that it is still enabled.

Colin



> Regards
>
> Peter Smout
>
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