[Solved] Wierd WIFI dropout problem

[tetzy]

I’m running the latest version of Mint and I update regularly.

For the past week I’ve been having sudden Wifi disconnections that I can only fix by rebooting my PC. Making my life odder yet, the wifi sometimes comes back on its own.

My

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inxi -Fxxxrz

info:

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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 

The very last thing I want to do is bother the experts...you have enough on your plates without me making your lives difficult, so I went through some of the other 'disconnection' threads hoping to fix my own problem. I found this in another help thread relating to disconnections:

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rfkill list && iwconfig && mokutil --sb-state

I ran the command - the results:

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0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
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=52 Mb/s   Tx-Power=17 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=40/70  Signal level=-70 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:51  Invalid misc:31201   Missed beacon:0

enp3s0    no wireless extensions.

SecureBoot disabled
Platform is in Setup Mode

In that same thread I also found the following:

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sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

I ran this command as well, rebooted but still see the same disconnection problem. The system information I posted above is the result AFTER running that new command.

I can usually fix my own problems - I hope I haven’t made a mess in this instance.

I’m vexed, every other Wifi enabled device in my home works fine, the problem only exists with this PC.

Any help is greatly appreciated, thanks.
Do you have any ideas (other than "stop trying to fix your own #%$*ing problems, you moron")?

[hglee]

For the past week I’ve been having sudden Wifi disconnections that I can only fix by rebooting my PC. Making my life odder yet, the wifi sometimes comes back on its own.

Let's try this:


Open a Terminal (Ctrl-Alt-T), then copy-and-paste the following command...

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

Reboot.


If you later wish to undo the above modification...

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sudo rm /etc/modprobe.d/ath9k_btcoex.conf

[tetzy]

Thanks for your response - I've run that command and all seems good so far.

I'm surprised by the number of similar problems - funny how a small update can play with so many configurations...

[hglee]

Thanks for your response - I've run that command and all seems good so far.

You did a great job of narrowing the search, with all of the relevant and formatted system info you posted. Pondering time paid off.


Come back in a bit to put [SOLVED] into the title of your original post, if all continues to go well.