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    Bluetooth issues on Kubuntu 26.04

    Hello everyone,

    A bit of background: just recently made the decision to switch from Windows 11 to Linux, and I settled on Kubuntu. I installed Kubuntu 26.04 on my recently purchased laptop. It feels very modern, snappy, and a joy to use as a complete Linux beginner. Installation was straightforward except for one small but important issue. Bluetooth does not seem to be working properly, if at all, prompting me to make my first post on this forum. Although I can see the bluetooth option, whenever I hit the switch to turn it on, it still says disabled. In the bluetooth configuration tool, there is no difference between the enabled and disabled state as the panel simply displays "disabled".

    Here is the inxi output:
    Code:
    System:
      Host: afloresrLIN Kernel: 7.0.0-15-generic arch: x86_64 bits: 64
      Desktop: KDE Plasma v: 6.6.4 Distro: Kubuntu 26.04 LTS (Resolute Raccoon)
    Machine:
      Type: Laptop System: LENOVO product: 21QA0036US v: ThinkPad X9-14 Gen 1
        serial: <superuser required>
      Mobo: LENOVO model: 21QA0036US v: SDK0T76576 WIN
        serial: <superuser required> Firmware: UEFI vendor: LENOVO
        v: N4DET39W (1.22 ) date: 02/11/2026
    Battery:
      ID-1: BAT0 charge: 30.3 Wh (54.6%) condition: 55.5/55.1 Wh (100.7%)
        volts: 11.68 min: 11.7
    CPU:
      Info: 8-core model: Intel Core Ultra 7 268V bits: 64 type: MCP cache:
        L2: 14 MiB
      Speed (MHz): avg: 1108 min/max: 400/5000:4900:3700 cores: 1: 1108 2: 1108
        3: 1108 4: 1108 5: 1108 6: 1108 7: 1108 8: 1108
    Graphics:
      Device-1: Intel Lunar Lake [Intel Arc Graphics 130V / 140V] driver: xe
        v: kernel
      Display: wayland server: Xwayland v: 24.1.10 compositor: kwin_wayland
        driver: gpu: xe resolution: 2880x1800~120Hz
      API: EGL v: 1.5 drivers: iris,swrast
        platforms: gbm,wayland,x11,surfaceless,device
      API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 26.0.3-1ubuntu1
        renderer: Mesa Intel Graphics (LNL)
      API: Vulkan v: 1.4.341 drivers: intel,llvmpipe surfaces: N/A
      Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
        de: kscreen-console,kscreen-doctor wl: wayland-info x11: xdriinfo,
        xdpyinfo, xprop, xrandr
    Audio:
      Device-1: Intel Lunar Lake IPU driver: N/A
      Device-2: Intel Lunar Lake-M HD Audio driver: sof-audio-pci-intel-lnl
      API: ALSA v: k7.0.0-15-generic status: kernel-api
      Server-1: PipeWire v: 1.6.2 status: active
    Network:
      Device-1: Intel BE201 320MHz driver: iwlwifi
      IF: wlp0s20f3 state: up mac: 80:13:16:1f:24:3a
    Bluetooth:
      Device-1: Intel driver: btintel_pcie
      Report: hciconfig ID: hci0 rfk-id: 1 state: down
        bt-service: enabled,running rfk-block: hardware: no software: yes
        address: 00:00:00:00:00:00
    Drives:
      Local Storage: total: 953.87 GiB used: 12.63 GiB (1.3%)
      ID-1: /dev/nvme0n1 vendor: Samsung model: MZAL81T0HFLB-00BLL
        size: 953.87 GiB
    Partition:
      ID-1: / size: 334.38 GiB used: 12.62 GiB (3.8%) fs: ext4 dev: /dev/nvme0n1p6
      ID-2: /boot/efi size: 1022 MiB used: 8.1 MiB (0.8%) fs: vfat
        dev: /dev/nvme0n1p5
    Swap:
      ID-1: swap-1 type: file size: 512 MiB used: 0 KiB (0.0%) file: /swapfile
    Sensors:
      System Temperatures: cpu: 40.0 C mobo: N/A
      Fan Speeds (rpm): fan-1: 0 fan-2: 0
    Info:
      Memory: total: 32 GiB note: est. available: 30.87 GiB used: 4.74 GiB (15.4%)
      Processes: 425 Uptime: 6h 13m Shell: Bash inxi: 3.3.40
    
    ​
    I also found similar post, but on older Ubuntu support forms. One user requested info from the command
    Code:
     sudo dmesg | grep -i bluetooth
    which is quite long:
    Code:
    [    2.831725] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
    [    2.915741] Bluetooth: Core ver 2.22
    [    2.924668] NET: Registered PF_BLUETOOTH protocol family
    [    2.924675] Bluetooth: HCI device and connection manager initialized
    [    2.924681] Bluetooth: HCI socket layer initialized
    [    2.924683] Bluetooth: L2CAP socket layer initialized
    [    2.924692] Bluetooth: SCO socket layer initialized
    [    3.131283] Bluetooth: hci0: Device revision is 0
    [    3.131286] Bluetooth: hci0: Secure boot is enabled
    [    3.131287] Bluetooth: hci0: OTP lock is disabled
    [    3.131288] Bluetooth: hci0: API lock is enabled
    [    3.131288] Bluetooth: hci0: Debug lock is disabled
    [    3.131289] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
    [    3.131290] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 build 45995
    [    3.131837] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-iml.sfi
    [    3.131840] Bluetooth: hci0: Boot Address: 0x30098800
    [    3.131840] Bluetooth: hci0: Firmware Version: 107-8.26
    [    3.191602] Bluetooth: hci0: Waiting for firmware download to complete
    [    3.191606] Bluetooth: hci0: Firmware loaded in 58366 usecs
    [    3.193842] Bluetooth: hci0: Waiting for device to boot
    [    3.193873] Bluetooth: hci0: Device booted in 2208 usecs
    [    3.193874] Bluetooth: hci0: Waiting for device transition to d0
    [    3.193875] Bluetooth: hci0: Device moved to D0 in 0 usecs
    [    3.194165] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b
    [    3.196522] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-pci.sfi
    [    3.196531] Bluetooth: hci0: Boot Address: 0x10000800
    [    3.196533] Bluetooth: hci0: Firmware Version: 107-8.26
    [    3.219792] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.363859] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.379643] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.390905] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.400159] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.449742] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.449883] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.453865] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.454150] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.457536] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.457673] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.763998] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.764503] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.797153] Bluetooth: hci0: Waiting for firmware download to complete
    [    3.797156] Bluetooth: hci0: Firmware loaded in 586554 usecs
    [    3.832880] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    3.832913] Bluetooth: hci0: Controller in error state
    [    4.709061] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
    [    4.709069] Bluetooth: BNEP filters: protocol multicast
    [    4.709074] Bluetooth: BNEP socket layer initialized
    [    6.850639] Bluetooth: hci0: Timeout (3000 ms)  on alive interrupt, alive context: intel_reset1
    [    6.850660] Bluetooth: hci0: Failed to send frame (-62)
    [    6.850661] Bluetooth: hci0: sending frame failed (-62)
    [    6.850680] Bluetooth: hci0: Failed to send Intel Reset command
    [    6.850691] Bluetooth: hci0: Intel Soft Reset failed (-62)
    [    6.850696] Bluetooth: hci0: Firmware download retry count: 1
    [    6.889198] Bluetooth: hci0: Device revision is 0
    [    6.889205] Bluetooth: hci0: Secure boot is enabled
    [    6.889207] Bluetooth: hci0: OTP lock is disabled
    [    6.889208] Bluetooth: hci0: API lock is enabled
    [    6.889208] Bluetooth: hci0: Debug lock is disabled
    [    6.889209] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
    [    6.889211] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 build 45995
    [    6.889541] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-iml.sfi
    [    6.889544] Bluetooth: hci0: Boot Address: 0x30098800
    [    6.889545] Bluetooth: hci0: Firmware Version: 107-8.26
    [    6.944220] Bluetooth: hci0: Waiting for firmware download to complete
    [    6.944241] Bluetooth: hci0: Firmware loaded in 53416 usecs
    [    6.946563] Bluetooth: hci0: Waiting for device to boot
    [    6.946566] Bluetooth: hci0: Device booted in 2248 usecs
    [    6.946569] Bluetooth: hci0: Waiting for device transition to d0
    [    6.946570] Bluetooth: hci0: Device moved to D0 in 1 usecs
    [    6.947150] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b
    [    6.951402] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-pci.sfi
    [    6.951425] Bluetooth: hci0: Boot Address: 0x10000800
    [    6.951429] Bluetooth: hci0: Firmware Version: 107-8.26
    [    6.964659] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    6.964785] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    6.992169] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    7.051268] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    7.051435] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    7.434444] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    7.434612] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    7.539240] Bluetooth: hci0: Waiting for firmware download to complete
    [    7.539253] Bluetooth: hci0: Firmware loaded in 574065 usecs
    [    7.575058] Bluetooth: hci0: Received gp1 mailbox interrupt
    [    7.575089] Bluetooth: hci0: Controller in error state
    [   10.562724] Bluetooth: hci0: Timeout (3000 ms)  on alive interrupt, alive context: intel_reset1
    [   10.562736] Bluetooth: hci0: Failed to send frame (-62)
    [   10.562738] Bluetooth: hci0: sending frame failed (-62)
    [   10.562784] Bluetooth: hci0: Failed to send Intel Reset command
    [   10.562788] Bluetooth: hci0: Intel Soft Reset failed (-62)
    [   10.609016] Bluetooth: hci0: Received hw exception interrupt
    [   10.609050] Bluetooth: hci0: Received gp1 mailbox interrupt
    [   10.610174] Bluetooth: hci0: Unsupported cnvi 0x00000000
    [   10.611239] Bluetooth: hci0: Received gp1 mailbox interrupt
    [   10.611290] Bluetooth: hci0: Controller in error state
    [   11.066877] Bluetooth: hci0: Timeout (500 ms) on tx completion
    [   11.066934] Bluetooth: hci0: Failed to send frame (-62)
    [   11.066935] Bluetooth: hci0: sending frame failed (-62)
    [   11.066983] Bluetooth: hci0: Failed to read MSFT supported features (-62)​
    Any help is appreciated.

    #2
    Welcome to KFN.
    Originally posted by element18 View Post
    I installed Kubuntu 26.04 on my recently purchased laptop.
    What make/model? Is it 'new'? Does it have a wifi/Bluetooth switch on the laptop?
    Windows no longer obstruct my view.
    Using Kubuntu Linux since March 23, 2007.
    "It is a capital mistake to theorize before one has data." - Sherlock Holmes

    Comment


      #3
      Hello,

      It is a Lenovo ThinkPad X9-14 Gen 1. It is new, meaning purchased directly from Lenovo. As far as I am aware, it does not have a physical switch.

      Comment

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