Public bug reported:
If I boot 6.8.0-138-generic then bluetooth works fine.
If I boot 6.8.0-139-generic then bluetooth does not work at all and dmesg shows
a very suspicious "BUG: kernel NULL pointer dereference," from USB/bluetooth
code.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-139-generic 6.8.0-139.139
ProcVersionSignature: Ubuntu 6.8.0-139.139-generic 6.8.12
Uname: Linux 6.8.0-139-generic x86_64
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: joachim 2961 F.... wireplumber
/dev/snd/controlC0: joachim 2961 F.... wireplumber
/dev/snd/seq: joachim 2959 F.... pipewire
CasperMD5CheckMismatches:
./pool/restricted/n/nvidia-graphics-drivers-535/libnvidia-gl-535_535.113.01-0ubuntu3_i386.deb
CasperMD5CheckResult: fail
CurrentDesktop: MATE
Date: Fri Sep 18 19:11:19 2026
InstallationDate: Installed on 2023-11-28 (1025 days ago)
InstallationMedia: Ubuntu-MATE 23.10 "Mantic Minotaur" - Release amd64
(20231010)
MachineType: LENOVO 83AM
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-139-generic
root=/dev/mapper/vgubuntu--mate-root ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.8.0-139-generic N/A
linux-backports-modules-6.8.0-139-generic N/A
linux-firmware 20240318.git3b128b60.0ubuntu3.1
SourcePackage: linux
UpgradeStatus: Upgraded to noble on 2024-11-29 (658 days ago)
dmi.bios.date: 06/16/2023
dmi.bios.release: 1.24
dmi.bios.vendor: LENOVO
dmi.bios.version: MKCN24WW
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: IdeaPad Pro 5 14APH8
dmi.ec.firmware.release: 1.24
dmi.modalias:
dmi:bvnLENOVO:bvrMKCN24WW:bd06/16/2023:br1.24:efr1.24:svnLENOVO:pn83AM:pvrIdeaPadPro514APH8:rvnLENOVO:rnLNVNB161216:rvrSDK0T76461WIN:cvnLENOVO:ct10:cvrIdeaPadPro514APH8:skuLENOVO_MT_83AM_BU_idea_FM_IdeaPadPro514APH8:
dmi.product.family: IdeaPad Pro 5 14APH8
dmi.product.name: 83AM
dmi.product.sku: LENOVO_MT_83AM_BU_idea_FM_IdeaPad Pro 5 14APH8
dmi.product.version: IdeaPad Pro 5 14APH8
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2167739
Title:
Bluetooth broken 6.8.0-139-generic
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