[Solved]My weird WiFi dropout problem is back...

[tetzy]

I’m running the latest version of Mint and I update regularly...and I think that might be my problem: this seems to only happen after certain Linux kernel updates.

For the past 24hours, I’ve been having sudden Wifi disconnections that I can only fix by rebooting my PC.

Here's my

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inxi -Fxxxrz

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System:
  Kernel: 5.4.0-77-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
  Desktop: Cinnamon 4.8.6 wm: muffin 4.8.1 dm: LightDM 1.30.0 
  Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal 
Machine:
  Type: Desktop System: Dell product: XPS 8700 v: N/A serial: <filter> 
  Chassis: type: 3 serial: <filter> 
  Mobo: Dell model: 0KWVT8 v: A03 serial: <filter> UEFI: Dell v: A08 
  date: 04/16/2014 
CPU:
  Topology: Quad Core model: Intel Core i7-4790 bits: 64 type: MT MCP 
  arch: Haswell rev: 3 L2 cache: 8192 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 57468 
  Speed: 1497 MHz min/max: 800/4000 MHz Core speeds (MHz): 1: 1452 2: 1414 
  3: 1417 4: 1398 5: 1454 6: 1397 7: 1398 8: 1402 
Graphics:
  Device-1: NVIDIA GM107 [GeForce GTX 745] driver: nvidia v: 460.80 
  bus ID: 01:00.0 chip ID: 10de:1382 
  Display: x11 server: X.Org 1.20.9 driver: nvidia 
  unloaded: fbdev,modesetting,nouveau,vesa resolution: 1920x1080~60Hz 
  OpenGL: renderer: GeForce GTX 745/PCIe/SSE2 v: 4.6.0 NVIDIA 460.80 
  direct render: Yes 
Audio:
  Device-1: Intel 8 Series/C220 Series High Definition Audio vendor: Dell 
  driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:8c20 
  Device-2: NVIDIA GM107 High Definition Audio [GeForce 940MX] 
  driver: snd_hda_intel v: kernel bus ID: 01:00.1 chip ID: 10de:0fbc 
  Device-3: Xenta type: USB driver: hid-generic,snd-usb-audio,usbhid 
  bus ID: 3-5:2 chip ID: 1d57:ad03 
  Sound Server: ALSA v: k5.4.0-77-generic 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Dell driver: r8169 v: kernel port: d000 bus ID: 03:00.0 
  chip ID: 10ec:8168 
  IF: enp3s0 state: down mac: <filter> 
  Device-2: Qualcomm Atheros AR9485 Wireless Network Adapter vendor: Dell 
  driver: ath9k v: kernel port: d000 bus ID: 04:00.0 chip ID: 168c:0032 
  IF: wlp4s0 state: up mac: <filter> 
  Device-3: Qualcomm Atheros Bluetooth USB Host Controller type: USB 
  driver: btusb bus ID: 3-13:5 chip ID: 0cf3:e004 serial: <filter> 
Drives:
  Local Storage: total: 931.51 GiB used: 371.05 GiB (39.8%) 
  ID-1: /dev/sda vendor: Western Digital model: WDS100T2B0A-00SM50 
  size: 931.51 GiB speed: 6.0 Gb/s serial: <filter> rev: 00WD scheme: GPT 
Partition:
  ID-1: / size: 915.40 GiB used: 371.05 GiB (40.5%) fs: ext4 dev: /dev/sda2 
Sensors:
  System Temperatures: cpu: 33.0 C mobo: N/A gpu: nvidia temp: 81 C 
  Fan Speeds (RPM): N/A gpu: nvidia fan: 38% 
Repos:
  No active apt repos in: /etc/apt/sources.list 
  Active apt repos in: /etc/apt/sources.list.d/nordvpn.list 
  1: deb https://repo.nordvpn.com//deb/nordvpn/debian stable main
  Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
  1: deb http://muug.ca/mirror/linuxmint/packages ulyssa main upstream import backport
  2: deb http://ubuntu.ca-west.mirror.fullhost.io/ubuntu focal main restricted universe multiverse
  3: deb http://ubuntu.ca-west.mirror.fullhost.io/ubuntu focal-updates main restricted universe multiverse
  4: deb http://ubuntu.ca-west.mirror.fullhost.io/ubuntu focal-backports main restricted universe multiverse
  5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
  6: deb http://archive.canonical.com/ubuntu/ focal partner
  Active apt repos in: /etc/apt/sources.list.d/team-xbmc-ppa-focal.list 
  1: deb http://ppa.launchpad.net/team-xbmc/ppa/ubuntu focal main
Info:
  Processes: 265 Uptime: 4m Memory: 15.59 GiB used: 1.24 GiB (8.0%) 
  Init: systemd v: 245 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Shell: bash 
  v: 5.0.17 running in: gnome-terminal inxi: 3.0.38 

I experienced a similar problem in April. At that time you suggested I try the following command and reboot:

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echo "options ath9k btcoex_enable=1" | sudo tee /etc/modprobe.d/ath9k_btcoex.conf

I've tried it again but it doesn't work - my internet drops out after a few minutes.

Any suggestions?

[sleeper12]

What does this show:

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 iwconfig 

[tetzy]

The iwconfig info:

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enp3s0    no wireless extensions.

lo        no wireless extensions.

wlp4s0    IEEE 802.11  ESSID:"SHAW-3E6080"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: F0:F2:49:3E:60:88   
          Bit Rate=57.8 Mb/s   Tx-Power=17 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=44/70  Signal level=-66 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:1377   Missed beacon:0

[sleeper12]

Only other thing I know to try is Disable IPv6:
https://easylinuxtipsproject.blogspot.c ... html#ID2.2

[sleeper12]

Sometimes it helps to reload the driver or restart Network Manager:

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 sudo modprobe -r ath9k && sudo modprobe ath9k 

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 sudo service network-manager restart 

[tetzy]

I've disabled IPv6 and so far, so good.

Thanks for your advice.

[sleeper12]

Give it a day or 2 & let us know.