Hi Benjamin, thanks for reporting this bug! Have you tried seeing if the mainline kernels solve this issue?
Try using dpkg to install the 6.16 kernel from here: https://kernel.ubuntu.com/mainline/?C=N;O=D and let us know if the issue persists. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2120242 Title: Intel Bluetooth on ThinkPad X1C Gen13 may fail during activation Status in linux package in Ubuntu: Incomplete Bug description: After disabling Bluetooth via the GUI, and attempting to turn it back on, it will remain greyed out with the following error lines in dmesg: [12381.907657] Bluetooth: hci0: MSFT extension not registered [12383.059493] Bluetooth: hci0: Failed to send frame (-62) [12383.059514] Bluetooth: hci0: sending frame failed (-62) [12383.059558] Bluetooth: hci0: Opcode 0x0c03 failed: -62 [12383.059602] Bluetooth: hci0: MSFT extension not registered [12384.155462] Bluetooth: hci0: Failed to send frame (-62) [12384.155480] Bluetooth: hci0: sending frame failed (-62) [12384.155531] Bluetooth: hci0: Opcode 0x0c03 failed: -62 [12384.155580] Bluetooth: hci0: MSFT extension not registered [12398.787454] Bluetooth: hci0: Failed to send frame (-62) [12398.787489] Bluetooth: hci0: sending frame failed (-62) [12398.787522] Bluetooth: hci0: Opcode 0x0c03 failed: -62 [12398.787546] Bluetooth: hci0: MSFT extension not registered [12401.891324] Bluetooth: hci0: Failed to send frame (-62) [12401.891358] Bluetooth: hci0: sending frame failed (-62) [12401.891384] Bluetooth: hci0: Opcode 0x0c03 failed: -62 [12401.891399] Bluetooth: hci0: MSFT extension not registered [12407.020299] Bluetooth: hci0: Failed to send frame (-62) [12407.020333] Bluetooth: hci0: sending frame failed (-62) [12407.020362] Bluetooth: hci0: Opcode 0x0c03 failed: -62 [12407.020379] Bluetooth: hci0: MSFT extension not registered Firmware is up-to-date. Only a reboot seems to fix this problem. ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: linux-image-6.14.0-27-generic 6.14.0-27.27 ProcVersionSignature: Ubuntu 6.14.0-27.27-generic 6.14.6 Uname: Linux 6.14.0-27-generic x86_64 ApportVersion: 2.32.0-0ubuntu5.3 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat Aug 9 23:43:14 2025 InstallationDate: Installed on 2025-08-09 (0 days ago) InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1) MachineType: LENOVO 21NSCTO1WW ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash XDG_RUNTIME_DIR=<set> ProcFB: 0 xedrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-27-generic root=UUID=d4720392-1403-41ff-b180-8218b2f65fa2 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.14.0-27-generic N/A linux-backports-modules-6.14.0-27-generic N/A linux-firmware 20250317.git1d4c88ee-0ubuntu1.3 SourcePackage: linux UpgradeStatus: Upgraded to plucky on 2025-08-09 (0 days ago) dmi.bios.date: 04/22/2025 dmi.bios.release: 1.34 dmi.bios.vendor: LENOVO dmi.bios.version: N4BET64W (1.34 ) dmi.board.asset.tag: Not Available dmi.board.name: 21NSCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0T76574 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.35 dmi.modalias: dmi:bvnLENOVO:bvrN4BET64W(1.34):bd04/22/2025:br1.34:efr1.35:svnLENOVO:pn21NSCTO1WW:pvrThinkPadX1CarbonGen13:rvnLENOVO:rn21NSCTO1WW:rvrSDK0T76574WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21NS_BU_Think_FM_ThinkPadX1CarbonGen13: dmi.product.family: ThinkPad X1 Carbon Gen 13 dmi.product.name: 21NSCTO1WW dmi.product.sku: LENOVO_MT_21NS_BU_Think_FM_ThinkPad X1 Carbon Gen 13 dmi.product.version: ThinkPad X1 Carbon Gen 13 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2120242/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
