Random session crash when connecting a Bluetooth headset

antux18 · 2026-01-07 11:15:19

Hello,

I recently got a new PC with the following specs :

System:
  Host: antoine-MSI-B650M Kernel: 6.18.3-arch1-1 arch: x86_64 bits: 64
  Desktop: GNOME v: 49.2 Distro: Arch Linux
Machine:
  Type: Desktop Mobo: Micro-Star model: B650M GAMING PLUS WIFI (MS-7E24)
    v: 1.0 serial: <superuser required> Firmware: UEFI vendor: American
    Megatrends LLC. v: 1.C3 date: 10/21/2025
CPU:
  Info: 6-core model: AMD Ryzen 5 7600X bits: 64 type: MT MCP cache: L2: 6 MiB
  Speed (MHz): avg: 2992 min/max: 427/5457 cores: 1: 2992 2: 2992 3: 2992
    4: 2992 5: 2992 6: 2992 7: 2992 8: 2992 9: 2992 10: 2992 11: 2992 12: 2992
Graphics:
  Device-1: Advanced Micro Devices [AMD/ATI] Navi 48 [Radeon RX 9070/9070
    XT/9070 GRE] driver: amdgpu v: kernel
  Device-2: Advanced Micro Devices [AMD/ATI] Raphael driver: amdgpu
    v: kernel
  Display: wayland server: Xwayland v: 24.1.9 compositor: gnome-shell
    driver: X: loaded: N/A failed: nvidia gpu: amdgpu resolution:
    1: 1920x1080~60Hz 2: 1280x1024~75Hz
  API: EGL v: 1.5 drivers: radeonsi,swrast
    platforms: gbm,wayland,x11,surfaceless,device
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.3.3-arch1.1
    renderer: AMD Radeon RX 9070 XT (radeonsi gfx1201 LLVM 21.1.6 DRM 3.64
    6.18.3-arch1-1)
  API: Vulkan v: 1.4.335 drivers: radv surfaces: N/A
  Info: Tools: api: eglinfo, glxinfo, vulkaninfo x11: xprop,xrandr
Audio:
  Device-1: Advanced Micro Devices [AMD/ATI] Navi 48 HDMI/DP Audio
    driver: snd_hda_intel
  Device-2: Advanced Micro Devices [AMD/ATI] Radeon High Definition Audio
    driver: snd_hda_intel
  Device-3: Advanced Micro Devices [AMD] Ryzen HD Audio
    driver: snd_hda_intel
  API: ALSA v: k6.18.3-arch1-1 status: kernel-api
  Server-1: PipeWire v: 1.4.9 status: active
Network:
  Device-1: Realtek RTL8125 2.5GbE driver: r8169
  IF: enp8s0 state: up speed: 1000 Mbps duplex: full mac: x
  Device-2: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter
    driver: mt7921e
  IF: wlp10s0 state: down mac: x
  IF-ID-1: docker0 state: down mac: x
Bluetooth:
  Device-1: MediaTek Wireless_Device driver: btusb type: USB
  Report: btmgmt ID: hci0 state: up address: x bt-v: 5.3
Drives:
  Local Storage: total: 1.82 TiB used: 1.07 TiB (58.9%)
  ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 990 EVO Plus 2TB
    size: 1.82 TiB
Partition:
  ID-1: / size: 1.82 TiB used: 1.07 TiB (58.9%) fs: btrfs dev: /dev/nvme0n1p2
  ID-2: /home size: 1.82 TiB used: 1.07 TiB (58.9%) fs: btrfs
    dev: /dev/nvme0n1p2
Swap:
  ID-1: swap-1 type: zram size: 30.45 GiB used: 0 KiB (0.0%) dev: /dev/zram0
Sensors:
  System Temperatures: cpu: 37.1 C mobo: 30.0 C
  Fan Speeds (rpm): N/A
  GPU: device: amdgpu temp: 32.0 C device: amdgpu temp: 25.0 C fan: 0
Info:
  Memory: total: 32 GiB note: est. available: 30.45 GiB used: 5.23 GiB (17.2%)
  Processes: 460 Uptime: 21m Shell: Zsh inxi: 3.3.40

Since last week, sometimes, when I connect a Bluetooth headset, after a few seconds, my session crashes, and I'm back to the login screen (the headset connected successfully though). It looks like it is because of a recent update, since I don't remember having this issue at first.

Here is the output of dmesg : http://0x0.st/PoCX.txt
And for journalctl -b : http://0x0.st/PHsC.txt

It seems to be caused by a segfault on bluetoothd.

Thank you in advance for your help!

Last edited by antux18 (2026-01-07 14:17:29)

antux18 · 2026-01-07 14:23:25

It might not be because of a segfault in bluetoothd, actually. It happened again just now (I didn't reboot since my last message), and there is no new segfault in dmesg.

Here is the rest of the output of dmesg. It follows directly the output given in my previous message : http://0x0.st/PHzz.txt

Same for journalctl -b: http://0x0.st/PHz-.txt

I can see a lot of core dumps, could it be related?

Last edited by antux18 (2026-01-07 14:29:10)

IFailALot · 2026-01-07 17:07:48

Maybe this is related?
https://bbs.archlinux.org/viewtopic.php?id=311495

antux18 · 2026-01-07 17:11:43

Yes, I think we have the same issue, and we are both running the same version of Wireplumber (0.5.13).

EDIT: Same issue on Debian apparently: https://bugs.debian.org/cgi-bin/bugrepo … ug=1124791

Last edited by antux18 (2026-01-07 17:14:56)

antux18 · 2026-01-07 20:00:08

Just downgraded to Wireplumber 0.5.12 and can confirm this was the issue.

Arch Linux

#1 2026-01-07 11:15:19

Random session crash when connecting a Bluetooth headset

#2 2026-01-07 14:23:25

Re: Random session crash when connecting a Bluetooth headset

#3 2026-01-07 17:07:48

Re: Random session crash when connecting a Bluetooth headset

#4 2026-01-07 17:11:43

Re: Random session crash when connecting a Bluetooth headset

#5 2026-01-07 20:00:08

Re: Random session crash when connecting a Bluetooth headset

Board footer