Here is some additional information that may be helpful. 1. Prior to upgrade with kernel 5.14.0-1011-oem, KDE Control Center > Bluetooth configuration shows full control over Bluetooth 2. After update to 5.14.0-1013-oem KDE Control Center > Bluetooth configuration shows message similar to 'No Bluetooth Device Found' 3. Reverting to kernel 5.14-0-1011-oem restores the expected capability 4. The following show differences between kernels: 4.1 `systemctl status bluetooth` shows more endpoints with 5.14.0-1011-oem 4.2 `lsusb` shows an Intel device with 5.14.0-1011-oem 4.3 `dmesg | egrep -i 'blue|firm'` shows more output with 5.14.0-1011-oem 5. We have reproduced on three systems, all with Intel AX201 Wifi Cards 5.1 First system: #> 00:14.3 Network controller: Intel Corporation Comet Lake PCH CNVi WiFi #> Subsystem: Intel Corporation Wi-Fi 6 AX201 160MHz ... 5.2 Second System: #> 00:14.3 Network controller: Intel Corporation Wi-Fi 6 AX201 (rev 20) #> Subsystem: Intel Corporation Device 0074
#> Updated Packages: apt-rollback --last 2 #> 1: 2022-01-04 13:09:02 - Upgrade of libsystemd0:amd64 libsystemd0:i386 udev:amd64 libudev1:amd64 libudev1:i386 systemd-timesyncd:amd64 libudev-dev:amd64 systemd-sysv:amd64 libpam-systemd:amd64 systemd:amd64 libnss-systemd:amd64 #> 2: 2022-01-04 08:51:30 - Upgrade of linux-image-oem-20.04d:amd64 linux-libc-dev:amd64 libnvidia-compute-470:amd64 libnvidia-compute-470:i386 libnvidia-encode-470:amd64 libnvidia-encode-470:i386 nvidia-kernel-common-470:amd64 xserver-xorg-video-nvidia-470:amd64 libnvidia-gl-470:amd64 libnvidia-gl-470:i386 azure-cli:amd64 libnvidia-fbc1-470:amd64 libnvidia-fbc1-470:i386 libnvidia-decode-470:amd64 libnvidia-decode-470:i386 linux-headers-oem-20.04d:amd64 libnvidia-cfg1-470:amd64 nvidia-utils-470:amd64 nvidia-dkms-470:amd64 linux-tools-oem-20.04d:amd64 nvidia-compute-utils-470:amd64 libnvidia-ifr1-470:amd64 libnvidia-ifr1-470:i386 nvidia-driver-470:amd64 libnvidia-common-470:amd64 linux-firmware:amd64 linux-tools-common:amd64 linux-oem-20.04d:amd64 libnvidia-extra-470:amd64 nvidia-kernel-source-470:amd64 systemctl status bluetooth # with 5.14.0-1013-oem kernel #> ● bluetooth.service - Bluetooth service #> Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled) #> Active: active (running) since Tue 2022-01-04 13:26:24 PST; 10min ago #> Docs: man:bluetoothd(8) #> Main PID: 17644 (bluetoothd) #> Status: "Running" #> Tasks: 1 (limit: 38132) #> Memory: 504.0K #> CGroup: /system.slice/bluetooth.service #> └─17644 /usr/lib/bluetooth/bluetoothd #> #> Jan 04 13:26:24 kfocus systemd[1]: Starting Bluetooth service... #> Jan 04 13:26:24 kfocus bluetoothd[17644]: Bluetooth daemon 5.53 #> Jan 04 13:26:24 kfocus systemd[1]: Started Bluetooth service. #> Jan 04 13:26:24 kfocus bluetoothd[17644]: Starting SDP server #> Jan 04 13:26:24 kfocus bluetoothd[17644]: Bluetooth management interface 1.21 initialized systemctl status bluetooth # with 5.14.0-1011-oem kernel #> ● bluetooth.service - Bluetooth service #> Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled) #> Active: active (running) since Tue 2022-01-04 13:47:16 PST; 20min ago #> Docs: man:bluetoothd(8) #> Main PID: 2482 (bluetoothd) #> Status: "Running" #> Tasks: 1 (limit: 38132) #> Memory: 2.8M #> CGroup: /system.slice/bluetooth.service #> └─2482 /usr/lib/bluetooth/bluetoothd #> #> Jan 04 13:47:16 kfocus bluetoothd[2482]: Bluetooth daemon 5.53 #> Jan 04 13:47:16 kfocus systemd[1]: Started Bluetooth service. #> Jan 04 13:47:16 kfocus bluetoothd[2482]: Starting SDP server #> Jan 04 13:47:16 kfocus bluetoothd[2482]: Bluetooth management interface 1.21 initialized #> Jan 04 13:47:17 kfocus bluetoothd[2482]: Endpoint registered: sender=:1.45 path=/MediaEndpoint/A2DPSink/sbc #> Jan 04 13:47:17 kfocus bluetoothd[2482]: Endpoint registered: sender=:1.45 path=/MediaEndpoint/A2DPSource/sbc #> Jan 04 13:47:21 kfocus bluetoothd[2482]: Endpoint unregistered: sender=:1.45 path=/MediaEndpoint/A2DPSink/sbc #> Jan 04 13:47:21 kfocus bluetoothd[2482]: Endpoint unregistered: sender=:1.45 path=/MediaEndpoint/A2DPSource/sbc #> Jan 04 13:47:22 kfocus bluetoothd[2482]: Endpoint registered: sender=:1.57 path=/MediaEndpoint/A2DPSink/sbc #> Jan 04 13:47:22 kfocus bluetoothd[2482]: Endpoint registered: sender=:1.57 path=/MediaEndpoint/A2DPSource/sbc lsusb # 5.14.0-1011-oem kernel #> Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub #> Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub #> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub #> Bus 001 Device 003: ID 5986:9102 Acer, Inc BisonCam,NB Pro #> Bus 001 Device 005: ID 8087:0026 Intel Corp. #> Bus 001 Device 004: ID 06cb:00c7 Synaptics, Inc. #> Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver #> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub #> Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub #> Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub lsusb # 5.14.0-1013-oem kernel # Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub # Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub # Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub # Bus 001 Device 003: ID 5986:9102 Acer, Inc BisonCam,NB Pro # Bus 001 Device 004: ID 06cb:00c7 Synaptics, Inc. # Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver # Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub # Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub # Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub dmesg | egrep -i 'blue|firm' # 5.14.0-1011-oem kernel #> [ 0.766321] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored #> [ 1.455707] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead #> [ 3.043159] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4) #> [ 20.975761] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-QuZ-a0-hr-b0-64.ucode failed with error -2 #> [ 20.980308] iwlwifi 0000:00:14.3: loaded firmware version 63.c04f3485.0 QuZ-a0-hr-b0-63.ucode op_mode iwlmvm #> [ 24.539688] Bluetooth: Core ver 2.22 #> [ 24.539708] NET: Registered PF_BLUETOOTH protocol family #> [ 24.539709] Bluetooth: HCI device and connection manager initialized #> [ 24.539713] Bluetooth: HCI socket layer initialized #> [ 24.539715] Bluetooth: L2CAP socket layer initialized #> [ 24.539718] Bluetooth: SCO socket layer initialized #> [ 24.660606] Bluetooth: hci0: Bootloader revision 0.4 build 0 week 30 2018 #> [ 24.661584] Bluetooth: hci0: Device revision is 2 #> [ 24.661587] Bluetooth: hci0: Secure boot is enabled #> [ 24.661588] Bluetooth: hci0: OTP lock is enabled #> [ 24.661589] Bluetooth: hci0: API lock is enabled #> [ 24.661590] Bluetooth: hci0: Debug lock is disabled #> [ 24.661591] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 #> [ 24.663300] Bluetooth: hci0: Found device firmware: intel/ibt-19-0-4.sfi #> [ 24.676459] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 #> [ 24.676461] Bluetooth: BNEP filters: protocol multicast #> [ 24.676464] Bluetooth: BNEP socket layer initialized #> [ 26.193980] Bluetooth: hci0: Waiting for firmware download to complete #> [ 26.195571] Bluetooth: hci0: Firmware loaded in 1496356 usecs #> [ 26.195611] Bluetooth: hci0: Waiting for device to boot #> [ 26.210631] Bluetooth: hci0: Device booted in 14689 usecs #> [ 26.211790] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-19-0-4.ddc #> [ 26.213658] Bluetooth: hci0: Applying Intel DDC parameters completed #> [ 26.216674] Bluetooth: hci0: Firmware revision 0.0 build 121 week 36 2020 #> [ 26.276676] Bluetooth: hci0: MSFT filter_enable is already on #> [ 26.325284] Bluetooth: RFCOMM TTY layer initialized #> [ 26.325302] Bluetooth: RFCOMM socket layer initialized #> [ 26.325311] Bluetooth: RFCOMM ver 1.11 dmesg | egrep -i 'blue|firm' # 5.14.0-1013-oem kernel #> [ 0.766130] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored #> [ 1.443589] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead #> [ 2.809917] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4) #> [ 13.635339] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-QuZ-a0-hr-b0-64.ucode failed with error -2 #> [ 13.638504] iwlwifi 0000:00:14.3: loaded firmware version 63.c04f3485.0 QuZ-a0-hr-b0-63.ucode op_mode iwlmvm #> [ 14.200552] Bluetooth: Core ver 2.22 #> [ 14.200567] NET: Registered PF_BLUETOOTH protocol family #> [ 14.200568] Bluetooth: HCI device and connection manager initialized #> [ 14.200571] Bluetooth: HCI socket layer initialized #> [ 14.200572] Bluetooth: L2CAP socket layer initialized #> [ 14.200574] Bluetooth: SCO socket layer initialized #> [ 18.365754] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 #> [ 18.365757] Bluetooth: BNEP filters: protocol multicast #> [ 18.365760] Bluetooth: BNEP socket layer initialized -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-oem-5.14 in Ubuntu. https://bugs.launchpad.net/bugs/1956393 Title: Bluetooth no longer recognized after update to 5.14.0-1013 Status in linux-signed-oem-5.14 package in Ubuntu: Confirmed Bug description: On Kubuntu Focus computers with the recent update to the OEM 5.14.0-1013 kernel, bluetooth is no longer recognized by KDE Plasma. We are not sure why this has happened, but this is likely an API change. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.14.0-1013-oem 5.14.0-1013.13 ProcVersionSignature: Ubuntu 5.14.0-1013.13-oem 5.14.20 Uname: Linux 5.14.0-1013-oem x86_64 ApportVersion: 2.20.11-0ubuntu27.21 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Tue Jan 4 13:47:39 2022 InstallationDate: Installed on 2021-08-05 (151 days ago) InstallationMedia: Kubuntu Focus 20.04.2 "Focal Fossa" (20210805) SourcePackage: linux-signed-oem-5.14 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-oem-5.14/+bug/1956393/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
