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#1 2020-03-09 03:23:47

wlxp12
Member
Registered: 2020-03-08
Posts: 2

Random Kernel Panic while using USB Wifi

I'm having problem with USB Wifi since I've been using 5.4.x+ kernel in Arch Linux. First, it appears when the 5.4.0 was released, and after that, I downgraded to the LTS Kernel and I had no problem. But, now as the Arch LTS is at 5.4.23, I'm getting the same problem.

When I'm using the USB wifi, there's kernel panic at a random time while using the USB wifi or removing the USB wifi. I'm not able to figure out the exact problem.

There are different instances when kernel panic happens:

1) The USB wifi stops working with LED lights off. The wifi won't start even after restarting the NetworkManager. So, If I try to remove the USB wifi, the kernel panic happens and Caps lock will start blinking.

2) The USB wifi stops working but LED light is still. I can't browse the internet and restarting the NetworkManager still doesn't do anything. But this time I'm not removing the USB wifi, every other thing works perfectly fine for 2-5 minutes, then Kernel panic happens, but there's no blinking in Caps Locks light.

This starts happening since kernel 5.4+ even in the LTS version. I'm not sure what to do. This happens every day. I thought this might be a problem with USB 3.0 port, but the same happens while using it in USB 2.0 without any cable.

I've included the dmesg output here: https://pastebin.com/K6KCdY0e
The output of journalctl : https://pastebin.com/0kzKuc3u

I'm using the TL-WN722N with the ath9k driver.

There's also one more glitch with the inbuilt wifi of laptop. The inbuild wifi (wlan0) keeps doing in loop scanning -> inactive -> scanning. Though this doesn't happen every time.

Last edited by wlxp12 (2020-03-09 03:25:14)

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