Kernel 6.14 - No Bluetooth (MX Master3)

Support Kernel
1

Hello everyone,
When I switch to kernel 6.14, I can no longer connect my MX Master 3. Other devices, like speakers, work perfectly fine. I’ve observed this behavior across different distributions (Arch, openSUSE Tumbleweed, Fedora 42) — every time the kernel is updated from 6.13.xx to 6.14.

The mouse can be connected via bluetoothctl, but it’s forgotten after every reboot or when the bluetooth.service is restarted.

It would be great if somebody can help.

Here is the hardware info:

System:
  Host: T480 Kernel: 6.14.0-1-MANJARO arch: x86_64 bits: 64
  Desktop: KDE Plasma v: 6.3.4 Distro: Manjaro Linux
Machine:
  Type: Laptop System: LENOVO product: 20L6S29D0E v: ThinkPad T480
    serial: <superuser required>
  Mobo: LENOVO model: 20L6S29D0E v: SDK0J40697 WIN
    serial: <superuser required> UEFI: LENOVO v: N24ET78W (1.53 )
    date: 11/07/2024
Battery:
  ID-1: BAT0 charge: 14.1 Wh (81.0%) condition: 17.4/24.0 Wh (72.5%)
    volts: 11.3 min: 11.6
  ID-2: BAT1 charge: 54.7 Wh (83.9%) condition: 65.2/71.3 Wh (91.5%)
CPU:
  Info: quad core Intel Core i7-8650U [MT MCP] speed (MHz): avg: 400
    min/max: 400/4200
Graphics:
  Device-1: Intel UHD Graphics 620 driver: i915 v: kernel
  Device-2: NVIDIA GP108M [GeForce MX150] driver: nouveau v: kernel
  Device-3: Bison Integrated IR Camera driver: uvcvideo type: USB
  Device-4: Bison SunplusIT Integrated Camera driver: uvcvideo type: USB
  Display: wayland server: X.org v: 1.21.1.16 with: Xwayland v: 24.1.6
    compositor: kwin_wayland driver: X: loaded: modesetting dri: iris,nouveau
    gpu: i915 resolution: 1920x1080~60Hz
  API: OpenGL v: 4.6 compat-v: 4.3 vendor: intel mesa v: 25.0.3-arch1.1
    renderer: Mesa Intel UHD Graphics 620 (KBL GT2)
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor wl: wayland-info x11: xdpyinfo,xprop
Network:
  Device-1: Intel Ethernet I219-LM driver: e1000e
  Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi
Drives:
  Local Storage: total: 476.94 GiB used: 91.6 GiB (19.2%)
Info:
  Memory: total: 32 GiB note: est. available: 31.1 GiB used: 2.92 GiB (9.4%)
  Processes: 267 Uptime: 12m Shell: Zsh inxi: 3.3.38
1 Like
2

Hi @Deeds87,

If you don’t need 6.14 for anything specific, I’d say stick to 6.13, or better yet, 6.12 - it is the latest LTS and SLTS, after all.

For more:

2 Likes
3

Hi @Mirdarthos,
yes, I’ll stick with version 6.12 for the time being, but my main goal is to understand the root cause of the issue and explore potential solutions. I use Linux not only for production purposes but also as a learning tool. It’s possible that others running the same system might depend on the newer kernel version.
Still, thanks for your input.

4

While that is true, I’d only start worrying if perhaps it didn’t work with the next LTS.

1 Like
5

I have two very similar old computer laptops. Both run Core 2 Duo cpus. The faster one gives me no wifi and some grapical glitches running 6.14.
The slower one runs kernel 6.14 perfectly including the wifi. Go figure. I put 6.13 back on the faster one.

6

The issue will be fixed with Kernel 6.14.2

1 Like
7

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