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[EN] Problems with wifi [solved]

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sotnik:
  Hello
After installing kernel 5.7.6 https://forum.siduction.org/index.php?topic=8011.0 the wifi does not work. The adapter that I use is (lsusb):

--- Code: ---Bus 001 Device 002: ID 0cf3:9271 Qualcomm Atheros Communications AR9271 802.11n
--- End code ---
It has an atheros chip. The driver is loaded (lsmod)
ath9k_hw 499712  2 ath9k_htc,ath9k_common
ath 36864  3 ath9k_htc,ath9k_common,ath9k_hw

 
Some how an other adapter that did not worked in the past now work but its slow and unstable:

--- Code: ---Bus 005 Device 002: ID 2357:0108 TP-Link TL-WN822N Version 4 RTL8192EU
--- End code ---

 
What I have to do to make the  Device 002 functional again?
I use NetorkManager
Thank you
 

der_bud:
https://forum.siduction.org/index.php?topic=8014.msg65012#msg65012

sotnik:
Thank you

sunrat:
Curiously, I have two TL-WN822N devices, a v2 with Atheros chip (which is broken in 5.7.x atm) and a v4 with Realtek chip same as your second one. The Atheros one has worked well for years. The Realtek one I spent hours fiddling with a driver from Github and parameters; got it working but never got it reliable. It's sitting in a box somewhere now.

sotnik:
If I am not wrong, Realtek chip works with 5.7.x kernel. It is slower than atheros but at least it work. In the past it did not worked at all.For the time being I uninstalled 5.7 kernel and installed 5.6.x kernel. At least atheros is very stable and fast.

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