Wifi can't reconnect after disconnecting randomly

General system Newbie
1

Hello, it’s been like 3 weeks i did all sorts of stuff in endeavour os but i can’t make the wifi stable. It disconnect randomly and can’t reconnect back if it happens otherwise it works. I heard it might be my realtek driver but i didn’t understood everything. I’m on dual boot and my wifi works well on Windows 11.

System info :

Summary

System:
Kernel: 6.12.66-1-lts arch: x86_64 bits: 64 compiler: gcc v: 15.2.1
Desktop: Hyprland v: 0.53.1 dm: SDDM Distro: EndeavourOS base: Arch Linux
Machine:
Type: Desktop System: ASUS product: N/A v: N/A serial:
Mobo: ASUSTeK model: PRIME B650-PLUS v: Rev 1.xx
serial: part-nu: SKU Firmware: UEFI
vendor: American Megatrends v: 1811 date: 10/07/2023
Battery:
Device-1: ps-controller-battery-14:3a:9a:e2:78:5b model: N/A serial: N/A
charge: N/A status: charging
CPU:
Info: 6-core model: AMD Ryzen 5 7600X bits: 64 type: MT MCP arch: Zen 4
rev: 2 cache: L1: 384 KiB L2: 6 MiB L3: 32 MiB
Speed (MHz): avg: 3592 min/max: 400/4701 boost: enabled cores: 1: 3592
2: 3592 3: 3592 4: 3592 5: 3592 6: 3592 7: 3592 8: 3592 9: 3592 10: 3592
11: 3592 12: 3592 bogomips: 112851
Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a
ssse3 svm
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 32 [Radeon RX 7700 XT /
7800 XT] vendor: Gigabyte driver: amdgpu v: kernel arch: RDNA-3 pcie:
speed: 16 GT/s lanes: 16 ports: active: DP-2 empty: DP-1, HDMI-A-1,
HDMI-A-2, Writeback-1 bus-ID: 03:00.0 chip-ID: 1002:747e
Device-2: Advanced Micro Devices [AMD/ATI] Raphael vendor: ASUSTeK
driver: amdgpu v: kernel arch: RDNA-2 pcie: speed: 16 GT/s lanes: 16 ports:
active: none empty: DP-3,HDMI-A-3,Writeback-2 bus-ID: 0e:00.0
chip-ID: 1002:164e temp: 37.0 C
Display: wayland server: X.org v: 1.21.1.21 with: Xwayland v: 24.1.9
compositor: Hyprland v: 0.53.1 driver: X: loaded: amdgpu
unloaded: modesetting,radeon alternate: fbdev,vesa dri: radeonsi
gpu: amdgpu display-ID: 1
Monitor-1: DP-2 model: AOC 24G2W1G3- res: 1920x1080 dpi: 93
diag: 604mm (23.8")
API: EGL v: 1.5 platforms: device: 0 drv: radeonsi device: 1 drv: radeonsi
device: 2 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi
wayland: drv: radeonsi x11: drv: radeonsi
API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.3.3-arch1.3
glx-v: 1.4 direct-render: yes renderer: AMD Radeon RX 7700 XT (radeonsi
navi32 LLVM 21.1.6 DRM 3.61 6.12.66-1-lts) device-ID: 1002:747e
API: Vulkan v: 1.4.335 surfaces: N/A device: 0 type: discrete-gpu
driver: mesa radv device-ID: 1002:747e device: 1 type: integrated-gpu
driver: mesa radv device-ID: 1002:164e
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor gpu: nvidia-smi wl: swaymsg,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: speed: 16 GT/s lanes: 16
bus-ID: 03:00.1 chip-ID: 1002:ab30
Device-2: Advanced Micro Devices [AMD/ATI] Radeon High Definition Audio
vendor: ASUSTeK driver: snd_hda_intel v: kernel pcie: speed: 16 GT/s
lanes: 16 bus-ID: 0e:00.1 chip-ID: 1002:1640
Device-3: Advanced Micro Devices [AMD] Ryzen HD Audio vendor: ASUSTeK
driver: snd_hda_intel v: kernel pcie: speed: 16 GT/s lanes: 16
bus-ID: 0e:00.6 chip-ID: 1022:15e3
Device-4: Sony DualSense wireless controller (PS5)
driver: playstation,snd-usb-audio,usbhid type: USB rev: 2.0 speed: 480 Mb/s
lanes: 1 bus-ID: 1-4:3 chip-ID: 054c:0ce6
Device-5: Trust GXT 232 Microphone
driver: hid-generic,snd-usb-audio,usbhid type: USB rev: 1.1 speed: 12 Mb/s
lanes: 1 bus-ID: 7-1:2 chip-ID: 145f:0254
API: ALSA v: k6.12.66-1-lts status: kernel-api
Server-1: sndiod v: N/A status: off
Server-2: PipeWire v: 1.4.10 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
4: pw-jack type: plugin
Network:
Device-1: Realtek RTL8812AE 802.11ac PCIe Wireless Network Adapter
driver: rtl8821ae v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: d000
bus-ID: 09:00.0 chip-ID: 10ec:8812
IF: wlan0 state: up mac:
Device-2: Realtek RTL8125 2.5GbE vendor: ASUSTeK driver: r8169 v: kernel
pcie: speed: 5 GT/s lanes: 1 port: c000 bus-ID: 0a:00.0 chip-ID: 10ec:8125
IF: eno1 state: down mac:
Device-3: Sony DualSense wireless controller (PS5)
driver: playstation,snd-usb-audio,usbhid type: USB rev: 2.0 speed: 480 Mb/s
lanes: 1 bus-ID: 1-4:3 chip-ID: 054c:0ce6
Bluetooth:
Device-1: TP-Link UB5A Adapter driver: btusb v: 0.8 type: USB rev: 1.1
speed: 12 Mb/s lanes: 1 bus-ID: 5-2:2 chip-ID: 2357:0604
Report: btmgmt ID: hci0 rfk-id: 0 state: up address: bt-v: 5.1
lmp-v: 10
Drives:
Local Storage: total: 931.51 GiB used: 509.43 GiB (54.7%)
ID-1: /dev/nvme0n1 vendor: Crucial model: CT1000P3PSSD8 size: 931.51 GiB
speed: 63.2 Gb/s lanes: 4 serial: temp: 24.9 C
Partition:
ID-1: / size: 184.53 GiB used: 28.02 GiB (15.2%) fs: ext4
dev: /dev/nvme0n1p5
ID-2: /boot/efi size: 96 MiB used: 32.4 MiB (33.8%) fs: vfat
dev: /dev/nvme0n1p1
Swap:
Alert: No swap data was found.
Sensors:
System Temperatures: cpu: 39.6 C mobo: 29.0 C
Fan Speeds (rpm): N/A
GPU: device: amdgpu temp: 45.0 C mem: 43.0 C fan: 0 device: amdgpu
temp: 37.0 C
Info:
Memory: total: 32 GiB note: est. available: 30.56 GiB used: 2.27 GiB (7.4%)
Processes: 312 Power: uptime: 8m wakeups: 0 Init: systemd v: 259
default: graphical
Packages: pm: pacman pkgs: 1276 Compilers: gcc: 15.2.1 Shell: Bash
v: 5.3.9 running-in: kitty inxi: 3.3.40

Please it’s the only problem i had with Endeavour OS otherwise i learned a lot, i already made a cool rice by my own.

2

Welcome to the community @Vrsatill :smiley::tada:

Have you ensured the Fast Startup/Boot option in Windows has been disabled?

3

Thank you ! And yes i did.

4

What does the log say when this happens?

5

Sorry for the late response.

https://0x0.st/PZ8j.txt

I saved the journalctl from the hour it happened but it’s too long i’m not sure what to look for exactly in it.
I also tried since last time to deactivate the hibernation of windows directly in regedit (already did it with a command in cmd normally) i had less problem with my wifi since but can’t say if it will happen again.

6

It looks like your WiFi is failing to retrieve an IP address from your router. This pattern is repeated numerous times.

First, it tries to retrieve a DHCP lease (IP address etc) from the router:

dhcp4 (wlan0): activation: beginning transaction (timeout in 45 seconds)

Then 45 seconds later, the failure:

dhcp4 (wlan0): canceled DHCP transaction
dhcp4 (wlan0): activation: beginning transaction (timeout in 45 seconds)
dhcp4 (wlan0): state changed no lease

There’s a couple of things going on which may be causing this.

  • Your WiFi MAC address may be dynamic, which means each time you connect, it’s treating your computer as a new device, which requires a new IP.
  • The address pool on the router may be small, and so there are no leases (IP addresses) available.

I’d suggest getting into the access point settings on your router, and ensuring the DHCP pool is big enough. You may also want to disable randomized MAC address on your system, so you’ll always be assigned the same IP address, rather than having to compete for a new one each time.

Just side note. You’re trying to connect on both 2.4GHz and 5GHz frequencies (not simultaneously, they’re just both available and being tried). This isn’t unusual in itself, but I’d personally recommend using just one. If distance / physical interference isn’t an issue, use 5GHz (higher bandwidth, lower range and penetration). If distance / physical interference is an issue, use 2.4GHz (lower bandwidth, higher range and penetration). If you’re moving around a lot, or its a busy network, maybe both are needed.

5GHz

wlan0: SME: Trying to authenticate with cc:19:a8:a9:c5:d1 (SSID='SFR_C5CF' freq=5640 MHz)

2.4GHz

wlan0: SME: Trying to authenticate with cc:19:a8:a9:c5:d0 (SSID='SFR_C5CF' freq=2412 MHz)
7

Thank u so much for that diagnosis. How did u know what to look for in that much lines ?

I would like to understand how to diagnose my system so i can do it by myself.

I will apply ur advice and report after like a week if it works for me.

8

I copied the log into a text file locally here, then used grep to help filter the results down. For example:

cat somelog.txt | grep wlan0

That’ll take the file somelog.txt, and pipe it into grep and filter out any line that doesn’t mention wlan0.

You can keep on piping and grepping, to add more filters. Using the previous results, this’ll then also filter any lines that don’t mention dhcp:

cat somelog.txt | grep wlan0 | grep dhcp

Sometimes I’ll write out the filtered version to another text file, and then browse it in a text editor (Kate).

cat somelog.txt | grep wlan0 > somelog-wlan0.txt

That writes the output to a file called somelog-wlan0.txt.

There’s lots more tools that can help with log files. tail and head are two I use fairly often, particularly tail. You can follow a log file in realtime like this:

tail -f somelog.txt

Or you can simply view the last x number of lines of a file. This example grabs the last 50 lines:

tail -n 50 somelog.txt
9

You can also try using an LLM to help sift through the data. They can be helpful at pointing to a problem area, but they need a fair bit of discretion with what they might recommend.

As needed, I fire up a local and private LLM running in a firejail (Qwen3-Next-80B-Instruct for general queries like this, or Qwen3-Coder-30B-Instruct for development). It can be a bit rough around the edges, but I don’t mind, it keeps my brain engaged :sweat_smile:

Some folk would probably just take it to an online LLM.

10

Ok i see now, i’m still learning the power of the terminal commands it’s interesting to know. Thank u for ur help :handshake::handshake:.

11

For me, it’s largely habits developed over years of managing headless servers.