[SOLVED] Wi-Fi suddently became slow

aluminium94 · Post by **aluminium94** » Wed Mar 27, 2024 1:14 pm

Hello everyone,

I've already seeked answers to my problem in this forum but none of the answers provided helped me...

Here is my configuration:

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System:
  Kernel: 5.15.0-101-generic x86_64 bits: 64 compiler: gcc v: 11.4.0 Desktop: MATE 1.26.0
    info: mate-panel wm: marco 1.26.0 vt: 7 dm: LightDM 1.30.0 Distro: Linux Mint 21.3 Virginia
    base: Ubuntu 22.04 jammy
Machine:
  Type: Laptop System: ASUSTeK product: VivoBook E14 E402YA_E402YA v: 1.0
    serial: <superuser required>
  Mobo: ASUSTeK model: E402YA v: 1.0 serial: <superuser required> UEFI: American Megatrends
    v: E402YA.307 date: 08/06/2020
Battery:
  ID-1: BAT0 charge: 15.3 Wh (74.3%) condition: 20.6/32.3 Wh (64.0%) volts: 7.8 min: 7.8
    model: ASUSTeK E402-42 type: Li-ion serial: N/A status: Discharging cycles: 418
CPU:
  Info: dual core model: AMD E2-7015 APU with AMD Radeon R2 Graphics bits: 64 type: MCP
    smt: <unsupported> arch: Puma rev: 1 cache: L1: 128 KiB L2: 1024 KiB
  Speed (MHz): avg: 1497 min/max: 1000/1500 boost: disabled cores: 1: 1497 2: 1497
    bogomips: 5988
  Flags: avx ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Mullins [Radeon R2 Graphics] vendor: ASUSTeK driver: radeon v: kernel ports:
    active: eDP-1 empty: HDMI-A-1 bus-ID: 00:01.0 chip-ID: 1002:9853 class-ID: 0300
  Device-2: IMC Networks USB2.0 VGA UVC WebCam type: USB driver: uvcvideo bus-ID: 1-1.4:4
    chip-ID: 13d3:5a11 class-ID: 0e02
  Display: x11 server: X.Org v: 1.21.1.4 compositor: marco v: 1.26.0 driver: X:
    loaded: ati,radeon unloaded: fbdev,modesetting,vesa gpu: radeon display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") s-diag: 582mm (22.9")
  Monitor-1: eDP res: 1920x1080 hz: 60 dpi: 158 size: 308x173mm (12.1x6.8") diag: 353mm (13.9")
  OpenGL: renderer: KABINI ( LLVM 15.0.7 DRM 2.50 5.15.0-101-generic)
    v: 4.5 Mesa 23.2.1-1ubuntu3.1~22.04.2 direct render: Yes
Audio:
  Device-1: AMD Kabini HDMI/DP Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel
    bus-ID: 00:01.1 chip-ID: 1002:9840 class-ID: 0403
  Device-2: AMD FCH Azalia vendor: ASUSTeK driver: snd_hda_intel v: kernel bus-ID: 00:14.2
    chip-ID: 1022:780d class-ID: 0403
  Sound Server-1: ALSA v: k5.15.0-101-generic running: yes
  Sound Server-2: PulseAudio v: 15.99.1 running: yes
  Sound Server-3: PipeWire v: 0.3.48 running: yes
Network:
  Device-1: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter vendor: AzureWave
    driver: rtl8821ce v: v5.5.2.1_35598.20191029 pcie: speed: 2.5 GT/s lanes: 1 port: e000
    bus-ID: 02:00.0 chip-ID: 10ec:c821 class-ID: 0280
  IF: wlp2s0 state: up mac: <filter>
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: ASUSTeK driver: r8169
    v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: d000 bus-ID: 03:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: enp3s0 state: down mac: <filter>
Bluetooth:
  Device-1: IMC Networks Bluetooth Radio type: USB driver: btusb v: 0.8 bus-ID: 2-1.1:3
    chip-ID: 13d3:3529 class-ID: e001 serial: <filter>
  Report: hciconfig ID: hci0 rfk-id: 1 state: down bt-service: enabled,running rfk-block:
    hardware: no software: yes address: <filter>
Drives:
  Local Storage: total: 119.24 GiB used: 28.64 GiB (24.0%)
  ID-1: /dev/sda vendor: Kingston model: RBUSC180DS37128GJ size: 119.24 GiB speed: 6.0 Gb/s
    type: SSD serial: <filter> rev: 61E1 scheme: GPT
Partition:
  ID-1: / size: 116.32 GiB used: 26.15 GiB (22.5%) fs: ext4 dev: /dev/sda2
  ID-2: /boot/efi size: 511 MiB used: 31.5 MiB (6.2%) fs: vfat dev: /dev/sda1
Swap:
  ID-1: swap-1 type: file size: 2 GiB used: 10.5 MiB (0.5%) priority: -2 file: /swapfile
USB:
  Hub-1: 1-0:1 info: Full speed or root hub ports: 2 rev: 2.0 speed: 480 Mb/s chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-2: 1-1:2 info: Advanced Micro Devices Root Hub ports: 4 rev: 2.0 speed: 480 Mb/s
    power: 100mA chip-ID: 0438:7900 class-ID: 0900
  Device-1: 1-1.3:3 info: Elan Micro ITE Device(8910) type: HID,Mouse
    driver: hid-generic,hid-multitouch,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA
    chip-ID: 04f3:3067 class-ID: 0301
  Device-2: 1-1.4:4 info: IMC Networks USB2.0 VGA UVC WebCam type: Video driver: uvcvideo
    interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 13d3:5a11 class-ID: 0e02
  Hub-3: 2-0:1 info: Full speed or root hub ports: 2 rev: 2.0 speed: 480 Mb/s chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-4: 2-1:2 info: Advanced Micro Devices Root Hub ports: 2 rev: 2.0 speed: 480 Mb/s
    power: 100mA chip-ID: 0438:7900 class-ID: 0900
  Device-1: 2-1.1:3 info: IMC Networks Bluetooth Radio type: Bluetooth driver: btusb
    interfaces: 2 rev: 1.1 speed: 12 Mb/s power: 500mA chip-ID: 13d3:3529 class-ID: e001
    serial: <filter>
  Hub-5: 3-0:1 info: Hi-speed hub with single TT ports: 2 rev: 2.0 speed: 480 Mb/s
    chip-ID: 1d6b:0002 class-ID: 0900
  Hub-6: 4-0:1 info: Super-speed hub ports: 2 rev: 3.0 speed: 5 Gb/s chip-ID: 1d6b:0003
    class-ID: 0900
Sensors:
  System Temperatures: cpu: 66.2 C mobo: N/A gpu: radeon temp: 67.0 C
  Fan Speeds (RPM): cpu: 3800
Repos:
  Packages: 2407 apt: 2400 flatpak: 7
  No active apt repos in: /etc/apt/sources.list
  Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list
    1: deb http: //linux-mint.froonix.org virginia main upstream import backport
    2: deb http: //mirrors.ircam.fr/pub/ubuntu/archive jammy main restricted universe multiverse
    3: deb http: //mirrors.ircam.fr/pub/ubuntu/archive jammy-updates main restricted universe multiverse
    4: deb http: //mirrors.ircam.fr/pub/ubuntu/archive jammy-backports main restricted universe multiverse
    5: deb http: //security.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse
Info:
  Processes: 236 Uptime: 14m wakeups: 1 Memory: 3.25 GiB used: 1.63 GiB (50.1%) Init: systemd
  v: 249 runlevel: 5 Compilers: gcc: 11.4.0 alt: 11/12 Client: Unknown python3.10 client
  inxi: 3.3.13

I use Wi-Fi to connect my laptop to the Internet. Installed Linux Mint about a month ago, I didn't notice any drop of the downloading speed (it was actually better than Windows 10), it was about 10 to 20 MB/sec.
Since 2 days now I noticed real drops of the downloading speed: whether I use wget or my browser the downloading speed turns around 700KB - 1MB/sec. Strangely also the web pages (even YouTube) charge very fast.

I tried troubleshooting this issue with this site : https://easylinuxtipsproject.blogspot.c ... ernet.html but nothing worked.

More commands:
lspci -nnk | grep -iA3 net

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02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
	Subsystem: AzureWave RTL8821CE 802.11ac PCIe Wireless Network Adapter [1a3b:3040]
	Kernel driver in use: rtl8821ce
	Kernel modules: rtw88_8821ce, rtl8821ce
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
	Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:208f]
	Kernel driver in use: r8169
	Kernel modules: r8169

mokutil --sb-state

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SecureBoot disabled

iwconfig

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lo        no wireless extensions.

enp3s0    no wireless extensions.

wlp2s0    IEEE 802.11AC  ESSID:"Freebox-839DC2"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:5.18 GHz  Access Point: 22:66:CF:43:B9:C4   
          Bit Rate:434 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=52/100  Signal level=-56 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Maybe it is correlated to the fact that I installed VirtualBox a couple of days ago and played a bit with Windows? I downloaded 4 ISOs (about 3GB each) with the same Internet connexion and everything went fine (also deleted them afterwards).
Finally, I also noticed the RAM usage increased a lot (now 1.7GB / 3.3GB with only Vivaldi browser opened) compared to before VirtualBox (I don't remember the usage but I'm sure it was lower) (plus VirtualBox doesn't run at startup).

aluminium94 · Post by **aluminium94** » Sun Mar 31, 2024 12:08 pm

Well, I tried updating the Linux Kernel to 6.5 and it got even worse (10 KB/s). Reverted to 5.15 and tried this: https://proof.ovh.net/files/ to get test files to download and I got 20 MB/s as before. I live in France, and I know that OVH has a center in France. I wonder if it is bound with the download speed. Maybe the other servers were too far? Like archive.org? Or is it bound to the type of the file downloaded (mostly ISOs)? (OVH's files are DAT format).

aluminium94 · Post by **aluminium94** » Wed Apr 17, 2024 11:11 am

Closing this post, the problem resolved on its own.

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[SOLVED] Wi-Fi suddently became slow

[SOLVED] Wi-Fi suddently became slow

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Re: [SOLVED] Wi-Fi suddently became slow