Stuttering and unstable Bluetooth Audio

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1

Hi,

I’m new to OpenSuse and really like it so far. The only thing I have a lot of trouble with is Bluetooth Audio. I have Bluetooth Headphones which I am connecting regularly through the KDE Bluetooth Settings but am failing to get good output. Whenever I move it starts stuttering a lot, as soon as I move more than 2 meters away from the computer, the bluetooth connection cuts completely. It is not a hardware issue, as the same setup used to work well under Windows

I have tried a few things already, but unfortunately none of them work.
Disabling WIFI has no effect on the quality, so I assume it’s no signal interference.
I tried the builtin Bluetooth on my motherboard and a USB bluetooth dongle - both show the same issue.
I tried increasing the latency of the Bluetooth audio

So far, none of these yielded any results. I am unfortunately not very familiar with Bluetooth connectivity, so any help would be greatly appreciated

Below is some hopefully useful system info

$ lsusb | grep Bluetooth
Bus 001 Device 015: ID 8087:0033 Intel Corp. AX211 Bluetooth

$ inxi -Aa
Audio:
  Device-1: Intel Raptor Lake High Definition Audio vendor: Gigabyte
    driver: snd_hda_intel v: kernel alternate: snd_soc_avs,snd_sof_pci_intel_tgl
    bus-ID: 00:1f.3 chip-ID: 8086:7a50 class-ID: 0403
  Device-2: NVIDIA AD104 High Definition Audio vendor: ASUSTeK
    driver: snd_hda_intel v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 16
    link-max: gen: 4 speed: 16 GT/s bus-ID: 01:00.1 chip-ID: 10de:22bc
    class-ID: 0403
  Device-3: Razer USA Seiren V3 Mini
    driver: hid-generic,snd-usb-audio,usbhid type: USB rev: 2.0 speed: 12 Mb/s
    lanes: 1 mode: 1.1 bus-ID: 1-3:18 chip-ID: 1532:056a class-ID: 0300
  Device-4: Logitech C920 PRO HD Webcam driver: snd-usb-audio,uvcvideo
    type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-7:12
    chip-ID: 046d:08e5 class-ID: 0102 serial: 4AB0F2DF
  API: ALSA v: k6.16.1-1-default status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: PipeWire v: 1.4.7 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl

sudo journalctl -fu pipewire has no output

Thanks in advance

2

There may be still 2.4GHz Wi-Fi interference in your immediate environment. If possible, switch your access point to 5 GHz only, and perhaps conduct a wireless scan with the computer to see if any other external 2.4GHz channels are active nearby.

3

I have the same issues with “rtl8852bu_fw.bin” combo card and latest distro update. But only under heavy Wi-Fi load(e.g doing a speed test), my audio cuts off completely until the test is finished. Connected to 5ghz also.
Disabling wi-fi entirely and playbacking offline it works fine, no stutter. Maybe a regression in the kernel perhaps? Anyway hope this will be fixed soon…

4

Thank you for the suggestions!

I tried disabling 2.4GHz access and tried disabling WiFi completely, but the issue remains. There are other WiFi networks in the building, but their connectivity is quite low.

I am not sure if the issue is due to WiFi interference… are there any other possible explanations?

cheers

5

Same here, worked in the past whatever wifi was used. Now my sennheiser momentum isn’t usable for music or telcos anymore. This definitely sounds like a kernel regressions. The latest tumbleweed kernels brought a load of bugs.

6

The following may be of interest to those with RTL8852CE chipsets:

Corresponding bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=2349675

1 Like
7

Yeah, that’s a great workaround, no stutter anymore for now:

sudo mv /lib/firmware/rtw89/rtw8852b_fw-1.bin.xz /lib/firmware/rtw89/rtw8852b_fw-1.bin.xz.bak
sudo ln -s /lib/firmware/rtw89/rtw8852b_fw.bin.xz /lib/firmware/rtw89/rtw8852b_fw-1.bin.xz
sudo reboot now

8

Thanks for the feedback.

9

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