I am trying to use the wifi adaptor TP-Link TL-WN722N (which user Atheros ath9k_htc).
But I can't have it go up.
~$ sudo ip link set wlxc4e9841384f9 up
returns with no error, but:
wlxc4e9841384f9: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
stays down.
The Ubuntu (Gnome) "Settings -> WiFi" window does not show it either.
Here is some more information:
~$ uname -a
Linux 5.4.0-128-generic #144~18.04.1-Ubuntu SMP Sep 22
11:08:41 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
~$ lsb_release -a
Description: Ubuntu 18.04.6 LTS Release: 18.04
~$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
~$ sudo dmesg | grep wlx
[ 17.046245] ath9k_htc 3-2:1.0 wlxc4e9841384f9: renamed from wlan0
~$ nmcli radio wifi on
(does not help)
~$ nmcli d
DEVICE TYPE STATE CONNECTION
wlxc4e9841384f9 wifi disconnected --
eno1 ethernet unavailable --
lo loopback unmanaged --
~$ lsusb
... ...
Bus 003 Device 002: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n
... ...
~$ lsmod | grep ath
ath9k_htc 77824 0
ath9k_common 36864 1 ath9k_htc
ath9k_hw 475136 2 ath9k_htc,ath9k_common
ath 36864 3 ath9k_htc,ath9k_common,ath9k_hw
mac80211 856064 1 ath9k_htc
cfg80211 712704 4 ath9k_htc,ath9k_common,ath,mac80211
~$ dmesg | grep ath9k
[ 1894.858326] usb 3-2: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
[ 1894.858407] usbcore:registered new interface driver ath9k_htc
[ 1895.329899] usb 3-2:ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size: 51008
[ 1895.580352] ath9k_htc 3-2:1.0: ath9k_htc: HTC initialized with 33 credits
[ 1895.806202] ath9k_htc 3-2:1.0: ath9k_htc: FW Version: 1.4
[ 1895.806205] ath9k_htc 3-2:1.0: FW RMW support: On
[ 1895.830873] ath9k_htc 3-2:1.0 wlxc4e9841384f9: renamed from wlan0
[ 2878.742250] usb 3-2: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size:
51008
[ 2878.992712] ath9k_htc 3-2:1.0: ath9k_htc: HTC initialized with 33 credits
~$ sudo iw wlxc4e9841384f9 scan
Does not return anything
~$ nmcli device wifi list
IN-USE SSID MODE CHAN RATE SIGNAL BARS SECURITY
Does not return anything
~$ modinfo ath9k_htc
filename: /lib/modules/5.4.0-128-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_htc.ko
firmware: ath9k_htc/htc_9271-1.4.0.fw; ath9k_htc/htc_7010-1.4.0.fw
description: Atheros driver 802.11n HTC based wireless devices
license: Dual BSD/GPL; author: Atheros Communications
srcversion: DC48CFECAAE9D63EBE6AEB4
alias: usb:v0CF3p20FFd*dc*dsc*dp*ic*isc*ip*in*
... ...
depends: mac80211,ath9k_hw,ath9k_common,ath,cfg80211
retpoline: Y intree: Y
vermagic: 5.4.0-128-generic SMP mod_unload modversions
signat: PKCS#7 sig_hashalgo: md4
parm: debug: Debugging mask (uint); nohwcrypt:Disable hardware encryption (int)
parm: btcoex_enable: Enable wifi-BT coexistence (int); ps_enable: Enable WLAN PowerSave (int)
parm: use_dev_fw: Use development FW version (int); blink: Enable LED blink on activity (int)
