RTL8761B/BU USB Bluetooth Adapter Disconnect/Reconnect Randomly

Support
,
1

Hi,

I’ve been having a long-standing issue with Bluetooth USB adapters. I originally had an unbranded adapter, however now I’ve recently purchased a StarTech USB Bluetooth adapter (USBA-BLUETOOTH-V5-C2). I’ve recently performed a fresh reinstall and am running Kernel 6.17.1.

The issue is that the Bluetooth will randomly but relatively frequently drop out and cause the device(s) to disconnect and reconnect. There is no error reported in dmesg, only that the device has connected, and taken the next available input handle.

I’ve tried a number of fixes - disabling autosuspend by device (confirmed to have taken effect through the flag “/sys/bus/usb/devices/3-2/power/control” reporting “on” as opposed to auto. I’ve tried physically moving the USB slot (2 and 3). I’ve tried renaming and symlinking the RTL8761B drivers in place of the RTL8761BU drivers, plus others I can’t recall.

I have confirmed the device doesn’t appear to be at fault as it works on a Windows machine. This behaviour also applies to controllers connected.

Am I missing something obvious?

How do I go about investigating as to why the device has disconnected?

Thanks

2

Hi @Toma678 ,

Welcome to the forum. The information you have written is not enough.

Please, provide the output of the following terminal command in this post in order to receive more help.

inxi -v8azy
```

Regards,

1 Like
3

Hi @j8a,

Thanks. Apologies, I was caught up in the detail of what I’ve tried and forgot the important bit of what my actual hardware is.

Please see the below output. The adapter ID in question is 0bda:8771.

System:
  Kernel: 6.17.1-0-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 15.2.1
    clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=/@/boot/vmlinuz-6.17-x86_64
    root=UUID=e5586317-9bf7-4566-a5b1-97c9c6dfee3c rw rootflags=subvol=@ quiet
    splash resume=UUID=187efe27-c26d-4e1a-8c9c-de2461d2a787
    udev.log_priority=3
  Desktop: KDE Plasma v: 6.3.6 tk: Qt v: N/A wm: kwin_x11 dm: SDDM
    Distro: Manjaro base: Arch Linux
Machine:
  Type: Desktop System: Gigabyte product: B450 AORUS PRO v: N/A serial: N/A
  Mobo: Gigabyte model: B450 AORUS PRO-CF serial: N/A
    uuid: 032e02b4-0499-0532-2506-120700080009 UEFI: American Megatrends LLC.
    v: F64e date: 06/26/2023
Battery:
  Device-1: hidpp_battery_0 model: Logitech Wireless Mouse MX Master 2S
    serial: <filter> charge: 100% (should be ignored) rechargeable: yes
    status: discharging
Memory:
  System RAM: total: 32 GiB available: 31.26 GiB used: 2.63 GiB (8.4%)
  Array-1: capacity: 128 GiB slots: 4 modules: 4 EC: None
    max-module-size: 32 GiB note: est.
  Device-1: Channel-A DIMM 0 type: DDR4 detail: synchronous unbuffered
    (unregistered) size: 8 GiB speed: 2133 MT/s volts: curr: 1.2 min: 1.2
    max: 1.2 width (bits): data: 64 total: 64 manufacturer: Corsair
    part-no: CMK16GX4M2D3000C16 serial: N/A
  Device-2: Channel-A DIMM 1 type: DDR4 detail: synchronous unbuffered
    (unregistered) size: 8 GiB speed: 2133 MT/s volts: curr: 1.2 min: 1.2
    max: 1.2 width (bits): data: 64 total: 64 manufacturer: Corsair
    part-no: CMK16GX4M2D3000C16 serial: N/A
  Device-3: Channel-B DIMM 0 type: DDR4 detail: synchronous unbuffered
    (unregistered) size: 8 GiB speed: 2133 MT/s volts: curr: 1.2 min: 1.2
    max: 1.2 width (bits): data: 64 total: 64 manufacturer: Corsair
    part-no: CMK16GX4M2D3000C16 serial: N/A
  Device-4: Channel-B DIMM 1 type: DDR4 detail: synchronous unbuffered
    (unregistered) size: 8 GiB speed: 2133 MT/s volts: curr: 1.2 min: 1.2
    max: 1.2 width (bits): data: 64 total: 64 manufacturer: Corsair
    part-no: CMK16GX4M2D3000C16 serial: N/A
PCI Slots:
  Slot: 12 type: PCIe status: in use info: J10 length: short volts: 3.3
    bus-ID: 00:03.1 children: 1: 08:00.0 class-ID: 0604 type: bridge children:
    1: 09:00.0 class-ID: 0604 type: bridge children: 1: 0a:00.0 class-ID: 0300
    type: display 2: 0a:00.1 class-ID: 0403 type: audio
  Slot: 13 type: PCIe status: available info: J3600 length: short volts: 3.3
    bus-ID: 00:1f.7
  Slot: 32 type: PCIe status: other info: J3707 length: short volts: 3.3
    bus-ID: 00:1f.7
CPU:
  Info: model: AMD Ryzen 7 5800X3D socket: AM4 bits: 64 type: MT MCP
    arch: Zen 3+ gen: 3 level: v3 note: check built: 2022 process: TSMC n6 (7nm)
    family: 0x19 (25) model-id: 0x21 (33) stepping: 2 microcode: 0xA201211
  Topology: cpus: 1x dies: 1 clusters: 1 cores: 8 threads: 16 tpc: 2
    smt: enabled cache: L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 4 MiB
    desc: 8x512 KiB L3: 96 MiB desc: 1x96 MiB
  Speed (MHz): avg: 3600 min/max: 576/4553 boost: enabled
    base/boost: 3400/3400 scaling: driver: amd-pstate-epp governor: powersave
    volts: 1.1 V ext-clock: 100 MHz cores: 1: 3600 2: 3600 3: 3600 4: 3600
    5: 3600 6: 3600 7: 3600 8: 3600 9: 3600 10: 3600 11: 3600 12: 3600 13: 3600
    14: 3600 15: 3600 16: 3600 bogomips: 108807
  Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1
    bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy
    constant_tsc cpb cpuid cqm cqm_llc cqm_mbm_local cqm_mbm_total
    cqm_occup_llc cr8_legacy cx16 cx8 de debug_swap decodeassists erms extapic
    extd_apicid f16c flushbyasid fma fpu fsgsbase fsrm fxsr fxsr_opt ht
    hw_pstate ibpb ibrs ibs invpcid irperf lahf_lm lbrv lm mba mca mce
    misalignsse mmx mmxext monitor movbe msr mtrr mwaitx nonstop_tsc nopl npt
    nrip_save nx ospke osvw overflow_recov pae pat pausefilter pclmulqdq
    pdpe1gb perfctr_core perfctr_llc perfctr_nb pfthreshold pge pku pni popcnt
    pse pse36 rapl rdpid rdpru rdrand rdseed rdt_a rdtscp rep_good sep sha_ni
    skinit smap smca smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor
    svm_lock syscall tce topoext tsc tsc_scale umip user_shstk v_spec_ctrl
    v_vmsave_vmload vaes vgif vmcb_clean vme vmmcall vpclmulqdq wbnoinvd wdt
    x2apic xgetbv1 xsave xsavec xsaveerptr xsaveopt xsaves xtopology
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: ghostwrite status: Not affected
  Type: indirect_target_selection status: Not affected
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: old_microcode status: Not affected
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed status: Not affected
  Type: spec_rstack_overflow mitigation: Safe RET
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Retpolines; IBPB: conditional; IBRS_FW;
    STIBP: always-on; RSB filling; PBRSB-eIBRS: Not affected; BHI: Not
    affected
  Type: srbds status: Not affected
  Type: tsa mitigation: Clear CPU buffers
  Type: tsx_async_abort status: Not affected
  Type: vmscape mitigation: IBPB before exit to userspace
Graphics:
  Device-1: Advanced Micro Devices [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900
    XTX/7900 GRE/7900M] vendor: Sapphire NITRO+ driver: amdgpu v: kernel
    arch: RDNA-3 code: Navi-3x process: TSMC n5 (5nm) built: 2022+ pcie: gen: 4
    speed: 16 GT/s lanes: 16 ports: active: DP-1,DP-2
    empty: HDMI-A-1,HDMI-A-2,Writeback-1 bus-ID: 0a:00.0 chip-ID: 1002:744c
    class-ID: 0300
  Display: unspecified server: X.Org v: 21.1.18 with: Xwayland v: 24.1.8
    compositor: kwin_x11 driver: X: loaded: amdgpu unloaded: modesetting,radeon
    alternate: fbdev,vesa dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
  Screen-1: 0 s-res: 3840x1080 s-dpi: 96 s-size: 1016x285mm (40.00x11.22")
    s-diag: 1055mm (41.54")
  Monitor-1: DP-1 mapped: DisplayPort-0 pos: primary,left
    model: Idek Iiyama PLE2483H serial: <filter> built: 2016 res: mode: 1920x1080
    hz: 60 scale: 100% (1) dpi: 92 gamma: 1.2 chroma: red: x: 0.647 y: 0.333
    green: x: 0.314 y: 0.620 blue: x: 0.149 y: 0.063 white: x: 0.314 y: 0.329
    size: 531x299mm (20.91x11.77") diag: 609mm (24") ratio: 16:9
    modes: 1920x1080, 1600x1200, 1680x1050, 1280x1024, 1440x900, 1280x960,
    1280x800, 1152x864, 1280x720, 1152x720, 1024x768, 832x624, 800x600,
    640x480, 720x400
  Monitor-2: DP-2 mapped: DisplayPort-1 pos: right
    model: Idek Iiyama PLE2483H serial: <filter> built: 2016 res: mode: 1920x1080
    hz: 60 scale: 100% (1) dpi: 92 gamma: 1.2 chroma: red: x: 0.647 y: 0.333
    green: x: 0.314 y: 0.620 blue: x: 0.149 y: 0.063 white: x: 0.314 y: 0.329
    size: 531x299mm (20.91x11.77") diag: 609mm (24") ratio: 16:9
    modes: 1920x1080, 1600x1200, 1680x1050, 1280x1024, 1440x900, 1280x960,
    1280x800, 1152x864, 1280x720, 1152x720, 1024x768, 832x624, 800x600,
    640x480, 720x400
  API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
    device: 1 drv: swrast gbm: drv: radeonsi surfaceless: drv: radeonsi x11:
    drv: radeonsi inactive: wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.2.3-arch1.2
    glx-v: 1.4 direct-render: yes renderer: AMD Radeon RX 7900 XTX (radeonsi
    navi31 LLVM 20.1.8 DRM 3.64 6.17.1-0-MANJARO) device-ID: 1002:744c
    memory: 23.44 GiB unified: no
  API: Vulkan v: 1.4.321 layers: 1 device: 0 type: discrete-gpu name: AMD
    Radeon RX 7900 XTX (RADV NAVI31) driver: mesa radv v: 25.2.3-arch1.2
    device-ID: 1002:744c surfaces: N/A
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor wl: wayland-info
    x11: xdpyinfo, xprop, xrandr
Audio:
  Device-1: Advanced Micro Devices [AMD/ATI] Navi 31 HDMI/DP Audio
    driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16
    bus-ID: 0a:00.1 chip-ID: 1002:ab30 class-ID: 0403
  Device-2: Advanced Micro Devices [AMD] Starship/Matisse HD Audio
    vendor: Gigabyte driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s
    lanes: 16 bus-ID: 0c:00.4 chip-ID: 1022:1487 class-ID: 0403
  API: ALSA v: k6.17.1-0-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.4.8 status: n/a (root, process) with:
    1: pipewire-pulse status: active 2: wireplumber status: active
    3: pipewire-alsa type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Intel I211 Gigabit Network vendor: Gigabyte driver: igb v: kernel
    pcie: gen: 1 speed: 2.5 GT/s lanes: 1 port: f000 bus-ID: 04:00.0
    chip-ID: 8086:1539 class-ID: 0200
  IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  Info: services: NetworkManager,systemd-timesyncd
  WAN IP: <filter>
Bluetooth:
  Device-1: Realtek Bluetooth Radio driver: btusb v: 0.8 type: USB rev: 1.1
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 3-2:2 chip-ID: 0bda:8771
    class-ID: e001 serial: <filter>
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 6.37 TiB used: 1.89 TiB (29.6%)
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 990 PRO 4TB
    size: 3.64 TiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
    lanes: 4 tech: SSD serial: <filter> fw-rev: 4B2QJXD7 temp: 25.9 C
    scheme: GPT
  SMART: yes health: PASSED on: 4 hrs cycles: 10 read-units: 931,233 [476 GB]
    written-units: 1,542,720 [789 GB]
  ID-2: /dev/nvme1n1 maj-min: 259:4 vendor: Crucial model: CT1000P1SSD8
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 tech: SSD serial: <filter> fw-rev: P3CR013 temp: 25.9 C
    scheme: GPT
  SMART: yes health: PASSED on: 125d 21h cycles: 991
    read-units: 10,556,792 [5.40 TB] written-units: 10,745,624 [5.50 TB]
  ID-3: /dev/sda maj-min: 8:0 vendor: Seagate model: ST2000DM008-2FR102
    family: BarraCuda 3.5 (SMR) size: 1.82 TiB block-size: physical: 4096 B
    logical: 512 B sata: 3.1 speed: 6.0 Gb/s tech: HDD rpm: 7200
    serial: <filter> fw-rev: 0001 temp: 25 C scheme: MBR
  SMART: yes state: enabled health: PASSED on: 3539h+28m+09.640s cycles: 1158
    read: 5.95 TiB written: 8.19 TiB Pre-Fail: attribute: Spin_Retry_Count
    value: 100 worst: 100 threshold: 97
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 3.6 TiB size: 3.6 TiB (100.00%) used: 634.39 GiB (17.2%)
    fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2 maj-min: 259:2 label: N/A
    uuid: e5586317-9bf7-4566-a5b1-97c9c6dfee3c
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 632 KiB (0.2%) fs: vfat block-size: 512 B dev: /dev/nvme0n1p1
    maj-min: 259:1 label: N/A uuid: 0DC0-7BE4
  ID-3: /home raw-size: 3.6 TiB size: 3.6 TiB (100.00%)
    used: 634.39 GiB (17.2%) fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2
    maj-min: 259:2 label: N/A uuid: e5586317-9bf7-4566-a5b1-97c9c6dfee3c
  ID-4: /mnt/1TBNVME raw-size: 931.51 GiB size: 915.82 GiB (98.31%)
    used: 293.27 GiB (32.0%) fs: ext4 block-size: 4096 B dev: /dev/nvme1n1p1
    maj-min: 259:5 label: NVMESSD uuid: 6997e36b-d39f-4f09-810c-c746cab38a51
  ID-5: /mnt/2TBExtra raw-size: 1.82 TiB size: 1.79 TiB (98.37%)
    used: 1003.06 GiB (54.7%) fs: ext4 block-size: 4096 B dev: /dev/sda1
    maj-min: 8:1 label: Extra uuid: 919f5086-b870-4f41-bf6c-d811b5ffbfe5
  ID-6: /var/cache raw-size: 3.6 TiB size: 3.6 TiB (100.00%)
    used: 634.39 GiB (17.2%) fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2
    maj-min: 259:2 label: N/A uuid: e5586317-9bf7-4566-a5b1-97c9c6dfee3c
  ID-7: /var/log raw-size: 3.6 TiB size: 3.6 TiB (100.00%)
    used: 634.39 GiB (17.2%) fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2
    maj-min: 259:2 label: N/A uuid: e5586317-9bf7-4566-a5b1-97c9c6dfee3c
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 34.39 GiB used: 0 KiB (0.0%)
    priority: -2 dev: /dev/nvme0n1p3 maj-min: 259:3 label: swap
    uuid: 187efe27-c26d-4e1a-8c9c-de2461d2a787
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 10 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 1-9:2 info: NZXT Kraken Base type: HID
    driver: nzxt_kraken3,usbhid interfaces: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 1e71:300e class-ID: 0300 serial: <filter>
  Hub-2: 2-0:1 info: super-speed hub ports: 4 rev: 3.1
    speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
    class-ID: 0900
  Hub-3: 3-0:1 info: hi-speed hub with single TT ports: 4 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 3-2:2 info: Realtek Bluetooth Radio type: bluetooth driver: btusb
    interfaces: 2 rev: 1.1 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1
    power: 500mA chip-ID: 0bda:8771 class-ID: e001 serial: <filter>
  Hub-4: 3-4:3 info: Terminus Hub ports: 4 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 1a40:0101 class-ID: 0900
  Device-1: 3-4.4:4 info: Elan Micro ActiveJet K-2024 Multimedia Keyboard
    type: keyboard,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
    speed: 1.5 Mb/s (183 KiB/s) lanes: 1 mode: 1.0 power: 100mA
    chip-ID: 04f3:0103 class-ID: 0300
  Hub-5: 4-0:1 info: super-speed hub ports: 4 rev: 3.1
    speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
    class-ID: 0900
Sensors:
  System Temperatures: cpu: 32.0 C mobo: N/A gpu: amdgpu temp: 29.0 C
    mem: 33.0 C
  Fan Speeds (rpm): N/A gpu: amdgpu fan: 0
Repos:
  Packages: pm: pacman pkgs: 1431 libs: 457 tools: pamac pm: flatpak pkgs: 0
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://manjaro.kurdy.org/stable/$repo/$arch
    2: https://www.mirrorservice.org/sites/repo.manjaro.org/repos/stable/$repo/$arch
    3: https://mirror.komelt.dev/manjaro/stable/$repo/$arch
    4: https://manjaro.mirrors.uk2.net/stable/$repo/$arch
    5: https://ask4.mm.fcix.net/manjaro/stable/$repo/$arch
    6: https://manjaro.syxpi.fr/manjaro/stable/$repo/$arch
    7: https://mirrors.manjaro.org/repo/stable/$repo/$arch
    8: https://mirrors2.manjaro.org/stable/$repo/$arch
    9: https://mirrors.cicku.me/manjaro/stable/$repo/$arch
    10: https://ftp.snt.utwente.nl/pub/linux/manjaro/stable/$repo/$arch
    11: https://mirrors.eric.ovh/manjaro/stable/$repo/$arch
    12: https://manjaro.mirrors.lavatech.top/stable/$repo/$arch
    13: https://mirror.futureweb.be/manjaro/stable/$repo/$arch
    14: https://mirror.netcologne.de/manjaro/stable/$repo/$arch
    15: https://ftp.belnet.be/mirrors/manjaro/repos/stable/$repo/$arch
    16: https://mirror.vinehost.net/manjaro/stable/$repo/$arch
    17: https://mirror.init7.net/manjaro/stable/$repo/$arch
    18: https://manjaro.mirror.wearetriple.com/stable/$repo/$arch
    19: https://mirror.koddos.net/manjaro/stable/$repo/$arch
    20: https://mirror.23m.com/manjaro/stable/$repo/$arch
    21: https://ftp.free.org/mirrors/repo.manjaro.org/repos/stable/$repo/$arch
    22: http://ftp.uni-kl.de/pub/linux/manjaro/stable/$repo/$arch
    23: https://manjaro.ynh.ovh/stable/$repo/$arch
    24: https://mirror.alpix.eu/manjaro/stable/$repo/$arch
    25: https://mirror.raiolanetworks.com/manjaro/stable/$repo/$arch
    26: https://mirrors.dotsrc.org/manjaro/stable/$repo/$arch
    27: https://ipng.mm.fcix.net/manjaro/stable/$repo/$arch
    28: https://ftp.halifax.rwth-aachen.de/manjaro/stable/$repo/$arch
    29: https://mirror.bouwhuis.network/manjaro/stable/$repo/$arch
    30: https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/stable/$repo/$arch
    31: https://ftp.lysator.liu.se/pub/manjaro/stable/$repo/$arch
    32: https://mirror.easyname.at/manjaro/stable/$repo/$arch
    33: https://ftp.rz.tu-bs.de/pub/mirror/manjaro.org/repos/stable/$repo/$arch
    34: https://mirror.alwyzon.net/manjaro/stable/$repo/$arch
    35: https://mirrors.ft.uam.es/manjaro/stable/$repo/$arch
    36: https://ftp.gwdg.de/pub/linux/manjaro/stable/$repo/$arch
    37: https://ftp.tu-chemnitz.de/pub/linux/manjaro/stable/$repo/$arch
    38: https://distrohub.kyiv.ua/manjaro/stable/$repo/$arch
    39: https://mirror.dkm.cz/manjaro/stable/$repo/$arch
    40: https://quantum-mirror.hu/mirrors/pub/manjaro/stable/$repo/$arch
    41: https://mirror.datacenter.by/pub/mirrors/manjaro/stable/$repo/$arch
    42: https://mirror.telepoint.bg/manjaro/stable/$repo/$arch
    43: https://manjaro.mirror.garr.it/manjaro/stable/$repo/$arch
    44: https://mirrors.nic.cz/manjaro/stable/$repo/$arch
    45: https://mirrors.up.pt/pub/manjaro/stable/$repo/$arch
    46: https://ftp.linux.org.tr/manjaro/stable/$repo/$arch
    47: https://mirror.hostiko.network/manjaro/stable/$repo/$arch
    48: https://ftpmirror1.infania.net/mirror/manjaro/stable/$repo/$arch
    49: https://mirror1.sox.rs/manjaro/stable/$repo/$arch
    50: https://cofractal-ewr.mm.fcix.net/manjaro/stable/$repo/$arch
    51: https://ftp.psnc.pl/linux/manjaro/stable/$repo/$arch
    52: https://mirror.it4i.cz/manjaro/stable/$repo/$arch
    53: https://fosszone.csd.auth.gr/manjaro/stable/$repo/$arch
    54: https://nnenix.mm.fcix.net/manjaro/stable/$repo/$arch
    55: https://mirror.math.princeton.edu/pub/manjaro/stable/$repo/$arch
    56: https://ct.mirror.garr.it/mirrors/manjaro/stable/$repo/$arch
    57: https://mirror.mobinhost.com/manjaro/stable/$repo/$arch
    58: https://ba.mirror.garr.it/mirrors/manjaro/stable/$repo/$arch
    59: https://forksystems.mm.fcix.net/manjaro/stable/$repo/$arch
    60: https://manjaro.mirror-services.net/pub/stable/$repo/$arch
    61: https://manjaro.ipacct.com/manjaro/stable/$repo/$arch
    62: https://coresite.mm.fcix.net/manjaro/stable/$repo/$arch
    63: https://volico.mm.fcix.net/manjaro/stable/$repo/$arch
    64: https://mnvoip.mm.fcix.net/manjaro/stable/$repo/$arch
    65: https://mirrors.gigenet.com/manjaro/stable/$repo/$arch
    66: https://ohioix.mm.fcix.net/manjaro/stable/$repo/$arch
    67: https://ftp.cc.uoc.gr/mirrors/linux/manjaro/stable/$repo/$arch
    68: https://repo.iut.ac.ir/repo/manjaro/stable/$repo/$arch
    69: https://nocix.mm.fcix.net/manjaro/stable/$repo/$arch
    70: https://mirror.truenetwork.ru/manjaro/stable/$repo/$arch
    71: https://mirror.xenyth.net/manjaro/stable/$repo/$arch
    72: https://muug.ca/mirror/manjaro/stable/$repo/$arch
    73: https://manjaro.grena.ge/stable/$repo/$arch
    74: https://codingflyboy.mm.fcix.net/manjaro/stable/$repo/$arch
    75: https://mirror.fcix.net/manjaro/stable/$repo/$arch
    76: https://southfront.mm.fcix.net/manjaro/stable/$repo/$arch
    77: https://irltoolkit.mm.fcix.net/manjaro/stable/$repo/$arch
    78: https://opencolo.mm.fcix.net/manjaro/stable/$repo/$arch
    79: https://mirrors.atlas.net.co/manjaro/stable/$repo/$arch
    80: https://repo.ialab.dsu.edu/manjaro/stable/$repo/$arch
    81: https://edgeuno-bog2.mm.fcix.net/manjaro/stable/$repo/$arch
    82: https://ziply.mm.fcix.net/manjaro/stable/$repo/$arch
    83: https://mirror.csclub.uwaterloo.ca/manjaro/stable/$repo/$arch
    84: https://manjaro.mirror.liquidtelecom.com/stable/$repo/$arch
    85: https://mirror.dimensiondata.com/mirrors/manjaro.org/stable/$repo/$arch
    86: https://mirror.xeonbd.com/manjaro/stable/$repo/$arch
    87: https://kartolo.sby.datautama.net.id/manjaro/stable/$repo/$arch
    88: https://linorg.usp.br/manjaro/stable/$repo/$arch
    89: https://mirrors.sonic.net/manjaro/stable/$repo/$arch
    90: https://mirror.dc.uz/manjaro/stable/$repo/$arch
    91: https://manjarolinux-mirror.cloud.mu/stable/$repo/$arch
    92: https://mirrors.ocf.berkeley.edu/manjaro/stable/$repo/$arch
    93: https://ftp.caliu.cat/pub/distribucions/manjaro/stable/$repo/$arch
    94: https://gsl-syd.mm.fcix.net/manjaro/stable/$repo/$arch
    95: https://mirrors.jlu.edu.cn/manjaro/stable/$repo/$arch
    96: https://mirror.aarnet.edu.au/pub/manjaro/stable/$repo/$arch
    97: https://mirror.nju.edu.cn/manjaro/stable/$repo/$arch
    98: https://manjaro.c3sl.ufpr.br/stable/$repo/$arch
    99: http://ossmirror.mycloud.services/os/linux/manjaro/stable/$repo/$arch
    100: https://manjaro.repo.cure.edu.uy/stable/$repo/$arch
    101: https://mirror.2degrees.nz/manjaro/stable/$repo/$arch
    102: https://mirror.phoepsilonix.love/manjaro/stable/$repo/$arch
    103: https://mirrors.sjtug.sjtu.edu.cn/manjaro/stable/$repo/$arch
Processes:
  CPU top: 5 of 408
  1: cpu: 2.6% command: brave pid: 2038 mem: 256.3 MiB (0.8%)
  2: cpu: 2.2% command: brave pid: 1896 mem: 367.1 MiB (1.1%)
  3: cpu: 1.7% command: Xorg pid: 761 mem: 157.7 MiB (0.4%)
  4: cpu: 1.5% command: plasmashell pid: 1054 mem: 375.9 MiB (1.1%)
  5: cpu: 1.1% command: brave pid: 1942 mem: 248.6 MiB (0.7%)
  Memory top: 5 of 408
  1: mem: 375.9 MiB (1.1%) command: plasmashell pid: 1054 cpu: 1.5%
  2: mem: 367.1 MiB (1.1%) command: brave pid: 1896 cpu: 2.2%
  3: mem: 256.3 MiB (0.8%) command: brave pid: 2038 cpu: 2.6%
  4: mem: 248.6 MiB (0.7%) command: brave pid: 1942 cpu: 1.1%
  5: mem: 205.3 MiB (0.6%) command: kwin_x11 pid: 994 cpu: 0.9%
Info:
  Processes: 408 Power: uptime: 3m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 12.48 GiB services: org_kde_powerdevil,
    power-profiles-daemon, upowerd Init: systemd v: 257 default: graphical
    tool: systemctl
  Compilers: clang: 20.1.8 gcc: 15.2.1 Shell: Sudo (sudo) v: 1.9.17p1
    default: Bash v: 5.3.3 running-in: konsole inxi: 3.3.39

Thanks

4

Hi @Toma678 ,

Looking the output I think that the bluetooth device is installed and available. You could try different ways to look what is happening:

The bluethoot device is blocked?

rfkill list

Is the blootooth loaded in the kernel 6.17?

lsmod | grep btusb

Also, you can search in the forum RTL8761B and there are different approaches which try to solve the problem. The best answer I can give is to try a different kernel or install linux617-headers.

Hope it help,

Regards,

1 Like
5

Thanks @j8a,

Unfortunately, all seems to be well in-terms of blocking and kmod requirements.

I have tried installing the headers, to no avail. Interestingly, the behaviour does change when utilising the firmware blob from a Windows machine, and disconnections are far less frequent. The Windows firmware blob has a name containing the words “patch_new” and is dropped in the C drive on W10, seemingly indicating that there is some odd behaviour that needed a patch.

The “Out of the box” firmware version is 0xdfc6d922 on Linux.

Perhaps this question may be better served in the Linux Firmware board?

6

Hi @Toma678 ,

I agree with you.

Kind regards,

7

Possibly.

Firstly, the following information is not to suggest a problem with firmware, but to provide information that might be useful.

The current linux-firmware-realtek in the Stable branch repository is 20250917-1, however, a later iteration (20251021-1) is in both the Testing and Unstable branches.

If there are issues with the current firmware, that might well be remedied by the later firmware, so it’s a question of waiting for it to reach Stable.

Consider using kernel 6.12 (LTS) if only to verify whether or not the issue persists.

I found this which links to the CD that came with the original device – this is apparently not available from the Realtek site – I mention this in case you should find a use for it:

Have you considered that your issue might be environmental? Wireless technologies typically depend more on line-of-sight than is generally acknowledged in the wild.

Example: My daughter once complained of similar disconnections over an extended period (several months). It was discovered this that this occurred only when someone entered the room through a particular doorway – or, more specifically, when that door was left open at certain angles – it was enough to tip the balance so to speak.