[SOLVED] Alfa WiFi Aadaptor AWUS036NHA

[Flip the Switch]

Hi All,

I am using Alfa WiFi Adaptor AWUS036NHA (Atheros AR9271 Chipset) on my desktop running Kubuntu 18.04.1.
Works great and getting 36MB/s out of it which is super.
However, if I do not use it for a while it seems to go to sleep, and I have to disconnect and reconnect to the network to get it working again.
I have disabled power saving.
iwconfig looks like
Mode:Managed Frequency:2.427 GHz Access Point: A0:BD:CD:17:9CA
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thrff Fragment thrff
Power Managementff
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:9 Invalid misc:122 Missed beacon:0
Any ideas anyone ??

[GreyGeek]

Are you using the ath9k driver?

[jglen490]

An easy way to check that is with the inxi command line utility.

inxi -n

[Flip the Switch]

Hi Guys,
Thanks for the response.
inxi -n shows
Card-2: Atheros AR9271 802.11n driver: ath9k_htc
IF: wlx00c0ca9768de state: N/A mac: N/A

[GreyGeek]

modinfo ath9k_htc gives the following info:

name:           ath9k_htc
vermagic:       4.15.0-39-generic SMP mod_unload 
signat:         PKCS#7
signer:         
sig_key:        
sig_hashalgo:   md4
parm:           debug:Debugging mask (uint)
parm:           nohwcrypt:Disable hardware encryption (int)
parm:           btcoex_enable:Enable wifi-BT coexistence (int)
parm:           ps_enable:Enable WLAN PowerSave (int)
parm:           use_dev_fw:Use development FW version (int)
parm:           blink:Enable LED blink on activity (int)

Open a Konsole and issue
sudo touch /etc/modprobe.d/ath9k_htc.conf
Then, close the Konsole and browse to that file with Dolphin.
Right mouse on it and open it with Kate.
In ath9k_htc.conf put
option ath9k_htc nohwcrypt=1
option ath9k_htc ps_enable=0

and save the file. You will be asked for your account password. Enter it and press OK.
Reboot.

[Flip the Switch]

Hi GreyGeek.

Your solution seems to have done the trick.
I have only had two failure to awaken's in about the last ten hours, so I am more than chuffed with the result.
Many thanks for your help.