Significant Internet Speed Drop When Using Bluetooth Audio on Manjaro KDE

Support Network
1

Hello Manjaro Community,

I’ve been thoroughly enjoying my experience with the Manjaro KDE distribution, but I’ve encountered a recurring issue that I hope someone can help me resolve.

While everything else works smoothly on my Manjaro KDE system, I’ve noticed that whenever I start using a Bluetooth audio device, such as earbuds or a speaker, my internet speed drops dramatically from around 80 Mbps to just 10 Mbps. Interestingly, the speed returns to normal once I stop using Bluetooth audio.

This issue doesn’t occur when the Bluetooth device is merely connected—it only affects my internet speed when I begin playing audio, whether it’s music or videos on YouTube. I’ve observed this behavior across all branches—stable, testing, and unstable.

I would greatly appreciate any advice or solutions to this problem. Thank you for your support and for making Manjaro KDE such a fantastic experience!

zv8                                                                               ✔ 
System:
  Kernel: 6.12.13-2-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
    clocksource: tsc avail: acpi_pm
    parameters: BOOT_IMAGE=/@/boot/vmlinuz-6.12-x86_64
    root=UUID=53dda77f-1b22-423b-adac-9b8923ec2be4 rw rootflags=subvol=@
    quiet splash resume=UUID=84285cf1-c546-4221-849d-0fb7c3b1ac8c
    udev.log_priority=3
  Desktop: KDE Plasma v: 6.3.0 tk: Qt v: N/A info: frameworks v: 6.10.0
    wm: kwin_x11 with: cairo-dock vt: 2 dm: SDDM Distro: Manjaro
    base: Arch Linux
Machine:
  Type: Desktop System: Dell product: Vostro 3470 v: N/A
    serial: <superuser required> Chassis: type: 3 serial: <superuser required>
  Mobo: Dell model: 03NJH0 v: A03 serial: <superuser required> part-nu: 0869
    uuid: <superuser required> UEFI: Dell v: 2.33.0 date: 08/31/2023
Battery:
  Message: No system battery data found. Is one present?
Memory:
  System RAM: total: 8 GiB available: 7.57 GiB used: 3.49 GiB (46.1%)
  Message: For most reliable report, use superuser + dmidecode.
  Array-1: capacity: 32 GiB slots: 2 modules: 2 EC: None
    max-module-size: 16 GiB note: est.
  Device-1: DIMM1 type: DDR4 detail: synchronous size: 4 GiB
    speed: 2400 MT/s volts: curr: 1 width (bits): data: 64 total: 64
    manufacturer: 859B0000802C part-no: BLS4G4D240FSE.8FBD2 serial: <filter>
  Device-2: DIMM2 type: DDR4 detail: synchronous size: 4 GiB
    speed: 2400 MT/s volts: curr: 1 width (bits): data: 64 total: 64
    manufacturer: 80AD000080AD part-no: HMA851U6AFR6N-UH serial: <filter>
PCI Slots:
  Permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Core i3-8100 bits: 64 type: MCP arch: Coffee Lake
    gen: core 8 level: v3 note: check built: 2018 process: Intel 14nm family: 6
    model-id: 0x9E (158) stepping: 0xB (11) microcode: 0xF6
  Topology: cpus: 1x dies: 1 clusters: 4 cores: 4 smt: <unsupported> cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 6 MiB desc: 1x6 MiB
  Speed (MHz): avg: 989 min/max: 800/3600 scaling: driver: intel_pstate
    governor: powersave cores: 1: 989 2: 989 3: 989 4: 989 bogomips: 28808
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 bmi1 bmi2 bts clflush
    clflushopt cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64
    dtherm dts epb ept ept_ad erms est f16c flexpriority flush_l1d fma fpu
    fsgsbase fxsr ht hwp hwp_act_window hwp_epp hwp_notify ibpb ibrs intel_pt
    invpcid lahf_lm lm mca mce md_clear mmx monitor movbe mpx msr mtrr
    nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln
    pni popcnt pse pse36 pti pts rdrand rdseed rdtscp rep_good sdbg sep smap
    smep ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow
    tsc tsc_adjust tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave
    xsavec xsaveopt xsaves xtopology xtpr
  Vulnerabilities:
  Type: gather_data_sampling mitigation: Microcode
  Type: itlb_multihit status: KVM: Split huge pages
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    disabled
  Type: mds mitigation: Clear CPU buffers; SMT disabled
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT disabled
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: IBRS
  Type: spec_rstack_overflow status: Not affected
  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: IBRS; IBPB: conditional; STIBP: disabled;
    RSB filling; PBRSB-eIBRS: Not affected; BHI: Not affected
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel CoffeeLake-S GT2 [UHD Graphics 630] vendor: Dell
    driver: i915 v: kernel arch: Gen-9.5 process: Intel 14nm built: 2016-20
    ports: active: HDMI-A-1 empty: DP-1 bus-ID: 00:02.0 chip-ID: 8086:3e91
    class-ID: 0300
  Display: x11 server: X.Org v: 21.1.15 with: Xwayland v: 24.1.5
    compositor: kwin_x11 driver: X: loaded: modesetting alternate: fbdev,vesa
    dri: iris gpu: i915 display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93") monitors: <missing: xrandr>
  Monitor-1: HDMI-A-1 model: Dell S2218H serial: <filter> built: 2018
    res: 1920x1080 dpi: 102 gamma: 1.2 chroma: red: x: 0.655 y: 0.337 green:
    x: 0.325 y: 0.612 blue: x: 0.153 y: 0.063 white: x: 0.314 y: 0.329
    size: 476x268mm (18.74x10.55") diag: 546mm (21.5") ratio: 16:9
    modes: 1920x1080, 1920x1080i, 1600x900, 1280x1024, 1152x864, 1280x720,
    1024x768, 800x600, 720x576, 720x480, 640x480, 720x400
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast gbm: drv: iris surfaceless: drv: iris x11: drv: iris
    inactive: wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 24.3.4-arch1.1
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel UHD Graphics 630 (CFL
    GT2) device-ID: 8086:3e91 memory: 3.7 GiB unified: yes
  API: Vulkan v: 1.4.303 layers: N/A device: 0 type: integrated-gpu
    name: Intel UHD Graphics 630 (CFL GT2) driver: N/A device-ID: 8086:3e91
    surfaces: xcb,xlib
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor wl: wayland-info x11: xdpyinfo,xprop
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Dell Vostro 3470
    driver: snd_hda_intel v: kernel alternate: snd_soc_avs,snd_sof_pci_intel_cnl
    bus-ID: 00:1f.3 chip-ID: 8086:a348 class-ID: 0403
  API: ALSA v: k6.12.13-2-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: 1.2.7 status: active 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: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: Dell Vostro 3470 driver: r8169 v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 port: 3000 bus-ID: 01:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: enp1s0 state: down mac: <filter>
  Device-2: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter
    vendor: Dell Vostro 3470 driver: ath9k v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 bus-ID: 02:00.0 chip-ID: 168c:0036 class-ID: 0280
  IF: wlp2s0 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
  WAN IP: <filter>
Bluetooth:
  Device-1: Qualcomm Atheros driver: btusb v: 0.8 type: USB rev: 1.1
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-14:8 chip-ID: 0cf3:e005
    class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 2 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 1.03 TiB used: 26.72 GiB (2.5%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: EVM model: M2 128GB size: 119.24 GiB
    block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s tech: SSD
    serial: <filter> fw-rev: 18B7 scheme: GPT
  ID-2: /dev/sdb maj-min: 8:16 vendor: Western Digital
    model: WD10EZEX-75WN4A1 size: 931.51 GiB block-size: physical: 4096 B
    logical: 512 B speed: 6.0 Gb/s tech: HDD rpm: 7200 serial: <filter>
    fw-rev: 7113 scheme: GPT
  Optical-1: /dev/sr0 vendor: PLDS model: DVD+-RW DU-8A5LH rev: 6D1M
    dev-links: cdrom
  Features: speed: 24 multisession: yes audio: yes dvd: yes
    rw: cd-r,cd-rw,dvd-r state: running
Partition:
  ID-1: / raw-size: 110.15 GiB size: 110.15 GiB (100.00%)
    used: 14.6 GiB (13.3%) fs: btrfs dev: /dev/sda2 maj-min: 8:2 label: N/A
    uuid: 53dda77f-1b22-423b-adac-9b8923ec2be4
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 584 KiB (0.2%) fs: vfat dev: /dev/sda1 maj-min: 8:1 label: N/A
    uuid: 5B98-150E
  ID-3: /home raw-size: 110.15 GiB size: 110.15 GiB (100.00%)
    used: 14.6 GiB (13.3%) fs: btrfs dev: /dev/sda2 maj-min: 8:2 label: N/A
    uuid: 53dda77f-1b22-423b-adac-9b8923ec2be4
  ID-4: /run/media/manilalv/My Data Disk raw-size: 931.51 GiB
    size: 915.82 GiB (98.31%) used: 11.68 GiB (1.3%) fs: ext4 dev: /dev/sdb1
    maj-min: 8:17 label: My Data Disk
    uuid: 0ad44659-11ee-44ef-b1a1-5764ef048dc9
  ID-5: /var/cache raw-size: 110.15 GiB size: 110.15 GiB (100.00%)
    used: 14.6 GiB (13.3%) fs: btrfs dev: /dev/sda2 maj-min: 8:2 label: N/A
    uuid: 53dda77f-1b22-423b-adac-9b8923ec2be4
  ID-6: /var/log raw-size: 110.15 GiB size: 110.15 GiB (100.00%)
    used: 14.6 GiB (13.3%) fs: btrfs dev: /dev/sda2 maj-min: 8:2 label: N/A
    uuid: 53dda77f-1b22-423b-adac-9b8923ec2be4
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: no
  ID-1: swap-1 type: partition size: 8.8 GiB used: 443.8 MiB (4.9%)
    priority: -2 dev: /dev/sda3 maj-min: 8:3 label: swap
    uuid: 84285cf1-c546-4221-849d-0fb7c3b1ac8c
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 16 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: 1-5:2 info: Dell KB216 Wired Keyboard type: keyboard,HID
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1
    speed: 1.5 Mb/s (183 KiB/s) lanes: 1 mode: 1.0 power: 100mA
    chip-ID: 413c:2113 class-ID: 0300
  Device-2: 1-6:3 info: Dell MS116 Optical Mouse type: mouse
    driver: hid-generic,usbhid interfaces: 1 rev: 2.0
    speed: 1.5 Mb/s (183 KiB/s) lanes: 1 mode: 1.0 power: 100mA
    chip-ID: 413c:301a class-ID: 0301
  Device-3: 1-8:4 info: Realtek RTS5129 Card Reader Controller
    type: <vendor specific> driver: rtsx_usb,rtsx_usb_ms,rtsx_usb_sdmmc
    interfaces: 1 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0
    power: 500mA chip-ID: 0bda:0129 class-ID: ff00 serial: <filter>
  Device-4: 1-14:8 info: Qualcomm Atheros type: bluetooth driver: btusb
    interfaces: 2 rev: 1.1 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1
    power: 100mA chip-ID: 0cf3:e005 class-ID: e001
  Hub-2: 2-0:1 info: super-speed hub ports: 8 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: 38.0 C pch: 52.0 C mobo: 37.0 C
  Fan Speeds (rpm): cpu: 1146
Repos:
  Packages: pm: pacman pkgs: 1208 libs: 350 tools: pamac
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://mirror.hostiko.network/manjaro/unstable/$repo/$arch
    2: https://ohioix.mm.fcix.net/manjaro/unstable/$repo/$arch
    3: https://edgeuno-bog2.mm.fcix.net/manjaro/unstable/$repo/$arch
    4: https://cofractal-ewr.mm.fcix.net/manjaro/unstable/$repo/$arch
    5: https://mirror.2degrees.nz/manjaro/unstable/$repo/$arch
Processes:
  CPU top: 5 of 230
  1: cpu: 27.1% command: firefox pid: 9807 mem: 506.2 MiB (6.5%)
  2: cpu: 11.9% command: firefox pid: 10116 mem: 280.1 MiB (3.6%)
  3: cpu: 4.5% command: spotify pid: 8976 mem: 275.4 MiB (3.5%)
  4: cpu: 3.0% command: kwin_x11 pid: 762 mem: 148.8 MiB (1.9%)
  5: cpu: 2.6% command: Xorg pid: 637 mem: 70.9 MiB (0.9%)
  Memory top: 5 of 230
  1: mem: 510.4 MiB (6.5%) command: plasmashell pid: 798 cpu: 1.3%
  2: mem: 506.2 MiB (6.5%) command: firefox pid: 9807 cpu: 27.1%
  3: mem: 407.7 MiB (5.2%) command: soffice.bin pid: 8620 cpu: 0.5%
  4: mem: 280.1 MiB (3.6%) command: firefox pid: 10116 cpu: 11.9%
  5: mem: 275.4 MiB (3.5%) command: spotify pid: 8976 cpu: 4.5%
Info:
  Processes: 230 Power: uptime: 1h 41m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 3.02 GiB services: org_kde_powerdevil,
    power-profiles-daemon, upowerd Init: systemd v: 257 default: graphical
    tool: systemctl
  Compilers: N/A Shell: Zsh v: 5.9 default: Bash v: 5.2.37
    running-in: yakuake inxi: 3.3.37
2

Bluetooth uses 2.4 GHz and can interfere with 2.4 GHz wifi. Use 5 GHz wifi if possible.

1 Like
3

I tried changing from the 2.4 GHz to the 5 GHz band on my Manjaro KDE system, but I couldn’t find the option to select the 5 GHz connection. My Wi-Fi router supports both bands, as my phone connects to the 5 GHz band without any issues.

Is there any way to make Manjaro KDE detect and connect to both bands? Thanks for your quick response and support!

4

You can only do this if your WiFi card supports dual-band.

inxi -Nnxxxz

… will give some (privacy-filtered) info about your network card(s).

2 Likes
5

Thank you very much for your support. Required details are

Network:
  Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: Dell Vostro 3470 driver: r8169 v: kernel pcie: speed: 2.5 GT/s
    lanes: 1 port: 3000 bus-ID: 01:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp1s0 state: down mac: <filter>
  Device-2: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter
    vendor: Dell Vostro 3470 driver: ath9k v: kernel pcie: speed: 2.5 GT/s
    lanes: 1 bus-ID: 02:00.0 chip-ID: 168c:0036 class-ID: 0280
  IF: wlp2s0 state: up mac: <filter>

I am not an expert. But I assume from the above information, my system card does not support 5 ghz . Am I right?

6

You appear to be right; this is single-band 2.4GHz + Bluetooth:

1 Like
7

Is it possible to solve this issue by adding a usb wifi adaptor which support both bands?

8

Should be, but get a decent one. I got ripped off with a cheap one recently. Otherwise, try changing the channel the router is set to.

A handy program is linssid (I mentioned it in another thread just now) and will show if you are using a crowded channel:

sudo pacman -Syu linssid
9

When I open this program, It does not show any activity in 5 Ghz channel. Only in 2.4 Ghz. Let me buy and try with a good wifi adaptor. Thank you for your great support.

1 Like
10

With nm-connection-editor one can fix the band it connects to if multiple are available.

1 Like
11

Thank you for your support. I tried with the editor, but the 5g band is not showing anywhere. But I am sure that my PC is capable to use 5g wifi band as I checked dell website. Below are the specification. It clearly shows the 5g band capability.

image
image797×244 28.6 KB

Is there this happens because of some driver problem?

12

I dont know what you are looking at but that does not match the devices you showed with the previous output.
You do not have an intel wireless card at all.
Yours is a qualcomm atheros card.
Did you buy this machine new from dell? Its always possible the card got switched out.

13

I bought this PC from the local shop. The below information I got from manjaro settings.

image
Two type of cards are showing on it.

14

Yeah … and one is your ethernet and a realtek card - RTL8111/8168/8411.

The other is the wireless and its a qualcomm atheros card - QCA9565/AR9565.

None are an intel and none match the devices shown in your previous image.

1 Like
15

When I check the motherboard, communication devices are all integrated not a standalone card. Now we are sure that, My PC does not support 5 Ghz. So we will go with the previous plan to buy a good network adapter. Thank you all for your great support an quick response. I am sorry that, I bothered you all with this. I was totally ignorant about the communication system of motherboard. Thanks once again.

16

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