Ubuntu 22.04 Bluetooth adapter can't find any bluetooth devices.

[jsn33]

Yeah, it helped. Now my laptop can see bluetooth devices, but my bluetooth headset doesn't play any sounds.

[jeremy31]

Results for

pactl list short |grep blue

[jsn33]

10    module-bluetooth-policy        
11    module-bluetooth-discover        
12    module-bluez5-discover

[jeremy31]

That looks correct, check the sound settings and see if the speakers are listed as an output device using A2DP

[jsn33]

Oh.. It works!!! Thanks for your help!

[jeremy31]

If I could have figured out what in in that kernel that I didn't add to the 5.19 source code. Can you post results for

sudo dmesg | egrep -i 'blue|firm'; sudo cat /sys/kernel/debug/usb/devices | awk '/3571/' RS=

[jsn33]

Yeah, sure. After reboot headset has no sound again.

[    0.107154] Spectre V2 : Enabling Speculation Barrier for firmware calls
[    0.283575] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    0.292487] acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain 0000 [bus 00-7f] only partially covers this bridge
[    1.487953] usb 3-2: Product: Bluetooth Radio
[    2.678125] Bluetooth: Core ver 2.22
[    2.678157] NET: Registered PF_BLUETOOTH protocol family
[    2.678158] Bluetooth: HCI device and connection manager initialized
[    2.678163] Bluetooth: HCI socket layer initialized
[    2.678165] Bluetooth: L2CAP socket layer initialized
[    2.678169] Bluetooth: SCO socket layer initialized
[    2.857925] Bluetooth: hci0: RTL: examining hci_ver=0b hci_rev=000b lmp_ver=0b lmp_subver=8852
[    2.859876] Bluetooth: hci0: RTL: rom_version status=0 version=1
[    2.859886] Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_fw.bin
[    2.861748] Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_config.bin
[    2.861890] Bluetooth: hci0: RTL: cfg_sz 6, total sz 38955
[    2.877209] rtw89_8852be 0000:02:00.0: Direct firmware load for rtw89/rtw8852b_fw-1.bin failed with error -2
[    2.877467] rtw89_8852be 0000:02:00.0: loaded firmware rtw89/rtw8852b_fw.bin
[    2.906371] rtw89_8852be 0000:02:00.0: Firmware version 0.27.32.1, cmd version 0, type 1
[    2.906380] rtw89_8852be 0000:02:00.0: Firmware version 0.27.32.1, cmd version 0, type 3
[    3.260894] Bluetooth: hci0: RTL: fw version 0xdfb791cb
[    3.396886] Bluetooth: hci0: Failed to read codec capabilities (-22)
[    3.411884] Bluetooth: hci0: AOSP extensions version v0.96
[    3.411887] Bluetooth: hci0: AOSP quality report is not supported
[    4.802836] [drm] Loading DMUB firmware via PSP: version=0x0101001F
[    4.803690] [drm] Found VCN firmware Version ENC: 1.16 DEC: 5 VEP: 0 Revision: 3
[    4.803705] amdgpu 0000:04:00.0: amdgpu: Will use PSP to load VCN firmware
[    4.877753] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    4.877762] Bluetooth: BNEP filters: protocol multicast
[    4.877769] Bluetooth: BNEP socket layer initialized
[    4.879503] Bluetooth: MGMT ver 1.22
[    4.943718] Bluetooth: RFCOMM TTY layer initialized
[    4.943737] Bluetooth: RFCOMM socket layer initialized
[    4.943746] Bluetooth: RFCOMM ver 1.11
T:  Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  2 Spd=12   MxCh= 0
D:  Ver= 1.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=13d3 ProdID=3571 Rev= 0.00
S:  Manufacturer=Realtek
S:  Product=Bluetooth Radio
S:  SerialNumber=00e04c000001
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms