Public bug reported:
What I expected: Bluetooth works reliably without manual intervention
after boot
What actually happened:
Bluetooth adapter becomes unresponsive on kernel 6.8.0-106-generic
with Intel Arrow Lake-U hardware. Plain service restart
(systemctl restart bluetooth) does not fix it. Only a full
driver reload works:
sudo modprobe -r btusb && sleep 2 && sudo modprobe btusb &&
sleep 2 && sudo systemctl restart bluetooth
Steps to reproduce:
1. Boot Ubuntu 24.04 with kernel 6.8.0-106-generic
2. Use bluetooth for a period of time
3. Bluetooth becomes unresponsive
4. systemctl restart bluetooth does not restore it
5. Full modprobe reload required to recover
More info:
[ 0.195423] ACPI: \_SB_.PC02.XHCI.RHUB.HS14.BTRT: New power resource
[ 0.195446] ACPI: \_SB_.PC02.XHCI.RHUB.HS14.DBTR: New power resource
[ 0.959201] sdhci: Secure Digital Host Controller Interface driver
[ 0.959206] sdhci: Copyright(c) Pierre Ossman
[ 0.965810] xhci_hcd 0000:00:0d.0: xHCI Host Controller
[ 0.965817] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 1
[ 0.967001] xhci_hcd 0000:00:0d.0: hcc params 0x20007fc1 hci version 0x120 quirks 0x0000000200009810
[ 0.968776] sdhci-pci 0000:81:00.0: SDHCI controller found [17a0:9755] (rev 1)
[ 0.968912] sdhci-pci 0000:81:00.0: enabling device (0000 -> 0002)
[ 0.969788] xhci_hcd 0000:00:0d.0: xHCI Host Controller
[ 0.969791] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 2
[ 0.969793] xhci_hcd 0000:00:0d.0: Host supports USB 3.2 Enhanced SuperSpeed
[ 0.969833] usb usb1: Product: xHCI Host Controller
[ 0.969834] usb usb1: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 0.975683] usb usb2: Product: xHCI Host Controller
[ 0.975684] usb usb2: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 0.992871] xhci_hcd 0000:80:14.0: xHCI Host Controller
[ 0.992873] xhci_hcd 0000:80:14.0: new USB bus registered, assigned bus number 3
[ 0.996478] xhci_hcd 0000:80:14.0: hcc params 0x20007fc1 hci version 0x120 quirks 0x0000000200009810
[ 1.008310] xhci_hcd 0000:80:14.0: xHCI Host Controller
[ 1.008311] xhci_hcd 0000:80:14.0: new USB bus registered, assigned bus number 4
[ 1.008313] xhci_hcd 0000:80:14.0: Host supports USB 3.2 Enhanced SuperSpeed
[ 1.008331] usb usb3: Product: xHCI Host Controller
[ 1.008332] usb usb3: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 1.010222] usb usb4: Product: xHCI Host Controller
[ 1.010222] usb usb4: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 1.024556] mmc0: SDHCI controller on PCI [0000:81:00.0] using ADMA 64-bit
[ 1.247256] usb 3-2: new full-speed USB device number 2 using xhci_hcd
[ 1.497216] usb 3-3: new full-speed USB device number 3 using xhci_hcd
[ 1.745158] usb 3-4: new full-speed USB device number 4 using xhci_hcd
[ 2.008153] usb 3-7: new full-speed USB device number 5 using xhci_hcd
[ 2.273164] usb 3-10: new full-speed USB device number 6 using xhci_hcd
[ 2.519261] usb 3-11: new high-speed USB device number 7 using xhci_hcd
[ 2.769262] usb 3-14: new high-speed USB device number 8 using xhci_hcd
[ 2.969936] Bluetooth: Core ver 2.22
[ 2.969950] NET: Registered PF_BLUETOOTH protocol family
[ 2.969952] Bluetooth: HCI device and connection manager initialized
[ 2.969954] Bluetooth: HCI socket layer initialized
[ 2.969956] Bluetooth: L2CAP socket layer initialized
[ 2.969957] Bluetooth: SCO socket layer initialized
[ 2.974701] usbcore: registered new interface driver btusb
[ 2.976113] Bluetooth: hci0: HW/SW Version: 0x00000000, Build Time: 20251210093205
[ 3.275493] Bluetooth: hci0: Device setup in 293715 usecs
[ 3.275497] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[ 3.295927] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 3.295930] Bluetooth: BNEP filters: protocol multicast
[ 3.295933] Bluetooth: BNEP socket layer initialized
[ 3.376499] Bluetooth: hci0: AOSP extensions version v1.00
[ 3.376503] Bluetooth: hci0: AOSP quality report is supported
[ 3.388439] Bluetooth: MGMT ver 1.22
[ 4.647861] Bluetooth: RFCOMM TTY layer initialized
[ 4.647868] Bluetooth: RFCOMM socket layer initialized
[ 4.647872] Bluetooth: RFCOMM ver 1.11
[ 48.175023] usbcore: deregistering interface driver btusb
[ 50.266424] Bluetooth: hci0: HW/SW Version: 0x00000000, Build Time: 20251210093205
[ 50.266440] usbcore: registered new interface driver btusb
[ 50.569084] Bluetooth: hci0: Device setup in 296469 usecs
[ 50.569091] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[ 50.654746] Bluetooth: hci0: AOSP extensions version v1.00
[ 50.654752] Bluetooth: hci0: AOSP quality report is supported
[ 50.667197] Bluetooth: MGMT ver 1.22
[ 204.354029] usb 3-1: new high-speed USB device number 9 using xhci_hcd
[ 217.331417] usb 3-14: reset high-speed USB device number 8 using xhci_hcd
[ 217.579231] usb 3-14: reset high-speed USB device number 8 using xhci_hcd
6.8.0-106-generic
PRETTY_NAME="Ubuntu 24.04.4 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.4 LTS (Noble Numbat)"
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo
PRETTY_NAME="Ubuntu 24.04.4 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.4 LTS (Noble Numbat)"
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-106-generic 6.8.0-106.106
ProcVersionSignature: Ubuntu 6.8.0-106.106-generic 6.8.12
Uname: Linux 6.8.0-106-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: lava 3009 F.... wireplumber
/dev/snd/controlC0: lava 3009 F.... wireplumber
/dev/snd/seq: lava 3004 F.... pipewire
CasperMD5CheckMismatches: ./casper/minimal.squashfs ./casper/minimal.standard.enhanced-secureboot.squashfs
CasperMD5CheckResult: fail
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 16 15:45:49 2026
InstallationDate: Installed on 2026-03-14 (2 days ago)
InstallationMedia: Ubuntu 24.04.4 LTS "Noble Numbat" - Release amd64 (20260210)
MachineType: LENOVO 83KY
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB:
0 i915drmfb
1 nvidia-drmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-106-generic root=UUID=0c2064f2-7982-45b8-a6a8-dec0f1189d26 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-6.8.0-106-generic N/A
linux-backports-modules-6.8.0-106-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.25
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/20/2025
dmi.bios.release: 1.27
dmi.bios.vendor: LENOVO
dmi.bios.version: RXCN27WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76461 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Legion 7 16IAX10
dmi.ec.firmware.release: 1.24
dmi.modalias: dmi:bvnLENOVO:bvrRXCN27WW:bd11/20/2025:br1.27:efr1.24:svnLENOVO:pn83KY:pvrLegion716IAX10:rvnLENOVO:rnLNVNB161216:rvrSDK0T76461WIN:cvnLENOVO:ct10:cvrLegion716IAX10:skuLENOVO_MT_83KY_BU_idea_FM_Legion716IAX10:
dmi.product.family: Legion 7 16IAX10
dmi.product.name: 83KY
dmi.product.sku: LENOVO_MT_83KY_BU_idea_FM_Legion 7 16IAX10
dmi.product.version: Legion 7 16IAX10
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: arrow-lake bluetooth btusb kernel-daily-bug regression
** Tags added: arrow-lake btusb regression
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https://bugs.launchpad.net/bugs/2144611
Title:
btusb driver enters bad state on Intel Arrow Lake-U, requires full
module reload to recover
Status in linux package in Ubuntu:
New
Bug description:
What I expected: Bluetooth works reliably without manual intervention
after boot
What actually happened:
Bluetooth adapter becomes unresponsive on kernel 6.8.0-106-generic
with Intel Arrow Lake-U hardware. Plain service restart
(systemctl restart bluetooth) does not fix it. Only a full
driver reload works:
sudo modprobe -r btusb && sleep 2 && sudo modprobe btusb &&
sleep 2 && sudo systemctl restart bluetooth
Steps to reproduce:
1. Boot Ubuntu 24.04 with kernel 6.8.0-106-generic
2. Use bluetooth for a period of time
3. Bluetooth becomes unresponsive
4. systemctl restart bluetooth does not restore it
5. Full modprobe reload required to recover
More info:
[ 0.195423] ACPI: \_SB_.PC02.XHCI.RHUB.HS14.BTRT: New power resource
[ 0.195446] ACPI: \_SB_.PC02.XHCI.RHUB.HS14.DBTR: New power resource
[ 0.959201] sdhci: Secure Digital Host Controller Interface driver
[ 0.959206] sdhci: Copyright(c) Pierre Ossman
[ 0.965810] xhci_hcd 0000:00:0d.0: xHCI Host Controller
[ 0.965817] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 1
[ 0.967001] xhci_hcd 0000:00:0d.0: hcc params 0x20007fc1 hci version 0x120 quirks 0x0000000200009810
[ 0.968776] sdhci-pci 0000:81:00.0: SDHCI controller found [17a0:9755] (rev 1)
[ 0.968912] sdhci-pci 0000:81:00.0: enabling device (0000 -> 0002)
[ 0.969788] xhci_hcd 0000:00:0d.0: xHCI Host Controller
[ 0.969791] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 2
[ 0.969793] xhci_hcd 0000:00:0d.0: Host supports USB 3.2 Enhanced SuperSpeed
[ 0.969833] usb usb1: Product: xHCI Host Controller
[ 0.969834] usb usb1: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 0.975683] usb usb2: Product: xHCI Host Controller
[ 0.975684] usb usb2: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 0.992871] xhci_hcd 0000:80:14.0: xHCI Host Controller
[ 0.992873] xhci_hcd 0000:80:14.0: new USB bus registered, assigned bus number 3
[ 0.996478] xhci_hcd 0000:80:14.0: hcc params 0x20007fc1 hci version 0x120 quirks 0x0000000200009810
[ 1.008310] xhci_hcd 0000:80:14.0: xHCI Host Controller
[ 1.008311] xhci_hcd 0000:80:14.0: new USB bus registered, assigned bus number 4
[ 1.008313] xhci_hcd 0000:80:14.0: Host supports USB 3.2 Enhanced SuperSpeed
[ 1.008331] usb usb3: Product: xHCI Host Controller
[ 1.008332] usb usb3: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 1.010222] usb usb4: Product: xHCI Host Controller
[ 1.010222] usb usb4: Manufacturer: Linux 6.8.0-106-generic xhci-hcd
[ 1.024556] mmc0: SDHCI controller on PCI [0000:81:00.0] using ADMA 64-bit
[ 1.247256] usb 3-2: new full-speed USB device number 2 using xhci_hcd
[ 1.497216] usb 3-3: new full-speed USB device number 3 using xhci_hcd
[ 1.745158] usb 3-4: new full-speed USB device number 4 using xhci_hcd
[ 2.008153] usb 3-7: new full-speed USB device number 5 using xhci_hcd
[ 2.273164] usb 3-10: new full-speed USB device number 6 using xhci_hcd
[ 2.519261] usb 3-11: new high-speed USB device number 7 using xhci_hcd
[ 2.769262] usb 3-14: new high-speed USB device number 8 using xhci_hcd
[ 2.969936] Bluetooth: Core ver 2.22
[ 2.969950] NET: Registered PF_BLUETOOTH protocol family
[ 2.969952] Bluetooth: HCI device and connection manager initialized
[ 2.969954] Bluetooth: HCI socket layer initialized
[ 2.969956] Bluetooth: L2CAP socket layer initialized
[ 2.969957] Bluetooth: SCO socket layer initialized
[ 2.974701] usbcore: registered new interface driver btusb
[ 2.976113] Bluetooth: hci0: HW/SW Version: 0x00000000, Build Time: 20251210093205
[ 3.275493] Bluetooth: hci0: Device setup in 293715 usecs
[ 3.275497] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[ 3.295927] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 3.295930] Bluetooth: BNEP filters: protocol multicast
[ 3.295933] Bluetooth: BNEP socket layer initialized
[ 3.376499] Bluetooth: hci0: AOSP extensions version v1.00
[ 3.376503] Bluetooth: hci0: AOSP quality report is supported
[ 3.388439] Bluetooth: MGMT ver 1.22
[ 4.647861] Bluetooth: RFCOMM TTY layer initialized
[ 4.647868] Bluetooth: RFCOMM socket layer initialized
[ 4.647872] Bluetooth: RFCOMM ver 1.11
[ 48.175023] usbcore: deregistering interface driver btusb
[ 50.266424] Bluetooth: hci0: HW/SW Version: 0x00000000, Build Time: 20251210093205
[ 50.266440] usbcore: registered new interface driver btusb
[ 50.569084] Bluetooth: hci0: Device setup in 296469 usecs
[ 50.569091] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[ 50.654746] Bluetooth: hci0: AOSP extensions version v1.00
[ 50.654752] Bluetooth: hci0: AOSP quality report is supported
[ 50.667197] Bluetooth: MGMT ver 1.22
[ 204.354029] usb 3-1: new high-speed USB device number 9 using xhci_hcd
[ 217.331417] usb 3-14: reset high-speed USB device number 8 using xhci_hcd
[ 217.579231] usb 3-14: reset high-speed USB device number 8 using xhci_hcd
6.8.0-106-generic
PRETTY_NAME="Ubuntu 24.04.4 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.4 LTS (Noble Numbat)"
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo
PRETTY_NAME="Ubuntu 24.04.4 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.4 LTS (Noble Numbat)"
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-106-generic 6.8.0-106.106
ProcVersionSignature: Ubuntu 6.8.0-106.106-generic 6.8.12
Uname: Linux 6.8.0-106-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: lava 3009 F.... wireplumber
/dev/snd/controlC0: lava 3009 F.... wireplumber
/dev/snd/seq: lava 3004 F.... pipewire
CasperMD5CheckMismatches: ./casper/minimal.squashfs ./casper/minimal.standard.enhanced-secureboot.squashfs
CasperMD5CheckResult: fail
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 16 15:45:49 2026
InstallationDate: Installed on 2026-03-14 (2 days ago)
InstallationMedia: Ubuntu 24.04.4 LTS "Noble Numbat" - Release amd64 (20260210)
MachineType: LENOVO 83KY
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB:
0 i915drmfb
1 nvidia-drmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-106-generic root=UUID=0c2064f2-7982-45b8-a6a8-dec0f1189d26 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-6.8.0-106-generic N/A
linux-backports-modules-6.8.0-106-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.25
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/20/2025
dmi.bios.release: 1.27
dmi.bios.vendor: LENOVO
dmi.bios.version: RXCN27WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76461 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Legion 7 16IAX10
dmi.ec.firmware.release: 1.24
dmi.modalias: dmi:bvnLENOVO:bvrRXCN27WW:bd11/20/2025:br1.27:efr1.24:svnLENOVO:pn83KY:pvrLegion716IAX10:rvnLENOVO:rnLNVNB161216:rvrSDK0T76461WIN:cvnLENOVO:ct10:cvrLegion716IAX10:skuLENOVO_MT_83KY_BU_idea_FM_Legion716IAX10:
dmi.product.family: Legion 7 16IAX10
dmi.product.name: 83KY
dmi.product.sku: LENOVO_MT_83KY_BU_idea_FM_Legion 7 16IAX10
dmi.product.version: Legion 7 16IAX10
dmi.sys.vendor: LENOVO
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