Wi-fi internet speeds are often either unusable at all or really low

I’m using t2u nano ac600 usb wifi module and I installed proper driver:


From time to time my internet would work normally, I’d have expected speeds but every 10-15 minutes my internet speed would drop under 1000kbps and the only thing I can do is restart my wifi connection and after that it usually works again for some time before going to really low speeds again.I am not sure if it’s important but during this time my wifi connection itself never drops, only my speeds go down.

I just started using manjaro so I’m sorry if I didn’t provide something.

inxi --full --verbosity=7 --filter --no-host output:

  Kernel: 5.15.41-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.1.0
    Desktop: GNOME v: 42.1 tk: GTK v: 3.24.34 wm: gnome-shell dm: GDM v: 42.0
    Distro: Manjaro Linux base: Arch Linux
  Type: Laptop System: HP product: HP Laptop 15-da0xxx
    v: Type1ProductConfigId serial: <superuser required> Chassis: type: 10
    serial: <superuser required>
  Mobo: HP model: 84A6 v: 80.31 serial: <superuser required> UEFI: Insyde
    v: F.07 date: 11/21/2018
  ID-1: BAT1 charge: 15.5 Wh (80.3%) condition: 19.3/41.0 Wh (47.1%)
    volts: 13.0 min: 11.4 model: Hewlett-Packard PABAS0241231 type: Li-ion
    serial: <filter> status: charging
  RAM: total: 3.75 GiB used: 2.51 GiB (66.9%)
  RAM Report:
    permissions: Unable to run dmidecode. Root privileges required.
  Info: dual core model: Intel Core i3-7020U bits: 64 type: MT MCP
    smt: enabled arch: Coffee Lake rev: A cache: L1: 128 KiB L2: 512 KiB
    L3: 3 MiB
  Speed (MHz): avg: 2300 high: 2301 min/max: 400/2300 cores: 1: 2300
    2: 2301 3: 2300 4: 2300 bogomips: 18406
  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 erms est f16c flush_l1d fma fpu fsgsbase fxsr ht hwp
    hwp_act_window hwp_epp hwp_notify ibpb ibrs intel_pt invpcid
    invpcid_single 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 tsc
    tsc_adjust tsc_deadline_timer vme x2apic xgetbv1 xsave xsavec xsaveopt
    xsaves xtopology xtpr
  Device-1: Intel HD Graphics 620 vendor: Hewlett-Packard driver: i915
    v: kernel ports: active: eDP-1 empty: HDMI-A-1 bus-ID: 00:02.0
    chip-ID: 8086:5916 class-ID: 0300
  Device-2: Lite-On HP Webcam type: USB driver: uvcvideo bus-ID: 1-5:3
    chip-ID: 04ca:707d class-ID: 0e02 serial: <filter>
  Display: wayland server: X.org v: with: Xwayland v: 22.1.1
    compositor: gnome-shell driver: gpu: i915 display-ID: 0
  Monitor-1: eDP-1 model: ChiMei InnoLux 0x15bf res: 1366x768 dpi: 101
    size: 344x193mm (13.54x7.6") diag: 394mm (15.5") modes: 1366x768
  Message: Wayland GBM/EGL data currently not available.
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Hewlett-Packard
    driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:9d71
    class-ID: 0403
  Sound Server-1: ALSA v: k5.15.41-1-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.21 running: no
  Sound Server-3: PulseAudio v: 15.0 running: yes
  Sound Server-4: PipeWire v: 0.3.51 running: yes
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Hewlett-Packard driver: r8168 v: 8.049.02-NAPI pcie:
    speed: 2.5 GT/s lanes: 1 port: 4000 bus-ID: 01:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: eno1 state: down mac: <filter>
  Device-2: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter
    vendor: Hewlett-Packard driver: rtw_8821ce v: N/A pcie: speed: 2.5 GT/s
    lanes: 1 port: 3000 bus-ID: 02:00.0 chip-ID: 10ec:c821 class-ID: 0280
  IF: wlo1 state: down mac: <filter>
  Device-3: TP-Link AC600 wireless Realtek RTL8811AU [Archer T2U Nano]
    type: USB driver: rtl88XXau bus-ID: 1-3:5 chip-ID: 2357:011e class-ID: 0000
    serial: <filter>
  IF: wlp0s20f0u3 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  WAN IP: <filter>
  Device-1: Realtek Bluetooth 4.2 Adapter type: USB driver: btusb v: 0.8
    bus-ID: 1-6:4 chip-ID: 0bda:b00a class-ID: e001 serial: <filter>
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
  Message: No logical block device data found.
  Hardware-1: Intel 82801 Mobile SATA Controller [RAID mode] driver: ahci
    v: 3.0 port: 5060 bus-ID: 00:17.0 chip-ID: 8086:282a rev: N/A
    class-ID: 0104
  Local Storage: total: 465.76 GiB used: 99.77 GiB (21.4%)
  ID-1: /dev/sda vendor: Western Digital model: WD5000LPCX-60VHAT0
    size: 465.76 GiB speed: 6.0 Gb/s type: HDD rpm: 5400 serial: <filter>
    rev: 1A01 scheme: GPT
  Message: No optical or floppy data found.
  ID-1: / size: 457.09 GiB used: 99.77 GiB (21.8%) fs: ext4 dev: /dev/sda2
    label: N/A uuid: f409583b-f645-4fb7-8459-0e7bf73c3f01
  ID-2: /boot/efi size: 299.4 MiB used: 288 KiB (0.1%) fs: vfat
    dev: /dev/sda1 label: NO_LABEL uuid: 81DA-F593
  Alert: No swap data was found.
  Message: No unmounted partitions found.
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 12 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 1-3:5
    info: TP-Link AC600 wireless Realtek RTL8811AU [Archer T2U Nano]
    type: Network driver: rtl88XXau interfaces: 1 rev: 2.1 speed: 480 Mb/s
    power: 500mA chip-ID: 2357:011e class-ID: 0000 serial: <filter>
  Device-2: 1-5:3 info: Lite-On HP Webcam type: Video driver: uvcvideo
    interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 04ca:707d
    class-ID: 0e02 serial: <filter>
  Device-3: 1-6:4 info: Realtek Bluetooth 4.2 Adapter type: Bluetooth
    driver: btusb interfaces: 2 rev: 1.1 speed: 12 Mb/s power: 500mA
    chip-ID: 0bda:b00a class-ID: e001 serial: <filter>
  Hub-2: 2-0:1 info: Super-speed hub ports: 6 rev: 3.0 speed: 5 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  System Temperatures: cpu: 29.8 C pch: 38.0 C mobo: 27.8 C
  Fan Speeds (RPM): N/A
  Processes: 220 Uptime: 24m wakeups: 3 Init: systemd v: 250 Compilers:
  gcc: 12.1.0 clang: 13.0.1 Packages: 1605 pacman: 1590 flatpak: 4 snap: 11
  Shell: Zsh v: 5.9 running-in: gnome-terminal inxi: 3.3.16


us 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0bda:b00a Realtek Semiconductor Corp. Realtek Bluetooth 4.2 Adapter
Bus 001 Device 003: ID 04ca:707d Lite-On Technology Corp. HP Webcam
Bus 001 Device 005: ID 2357:011e TP-Link AC600 wireless Realtek RTL8811AU [Archer T2U Nano]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

you have 2 wireless hardware? the Realtek RTL8821CE and the Realtek RTL8811AU
if you dont use the RTL8821CE, then try blacklisting it…
and why didnt you donwload the drivers for RTL8811AU from AUR?

Yeah, rtl8821ce is my built-in chip, I just blacklisted it and nothing changed, I didn’t try that before because I had the same problem in 5.10 kernel that doesn’t have rtl8821ce drivers
And my bad, I did download it from aur, I pasted the wrong thing, I corrected it now

which one did you installed from AUR? there are 4 available …
and did you install kernel headers? if not install them, then reboot and test

Driver and Kernel Headers perhaps?
Please check Internet connection is way too slow

Though, I don’t understand it works fast for some time then slows down!
I had an issue before that but it was way slow all the time.
I hope the link (and links within) might help.
Please let us know how it goes.

Hi @sonicteehee,
I wonder whether you can post the reason why you are not using your wifi card.

You can also check the following two posts in order to see that you could try to use the native wifi.
Hewlett-Packard Laptop 15-da0xxx Notebooks

Realtek Semiconductor RTL8822BE 802.11a/b/g/n/ac WiFi adapter

The last link show you which distros have successfully installed the wifi driver and Manjaro is one of the listed ones.