WiFi stopped working, suggestions?

[guenther]

Code:

sudo inxi -n

Network:
  Device-1: mmc-pwrseq-simple driver: pwrseq_simple
  Device-2: sun50i-a64-emac driver: N/A
  IF: usb0 state: down mac: 46:37:8b:0c:73:e1
  IF-ID-1: wlan0 state: down mac: 26:3e:35:b2:89:8a

Code:

sudo iwconfig

wlan0    unassociated  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency=2.412 GHz  Access Point: Not-Associated 
          Sensitivity:0/0 
          Retry:off  RTS thr:off  Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0  Missed beacon:0

Code:

sudo iw reg get

global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

I've also set the country code successfully, but it makes no real difference.

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Maybe an HW (power) issue, but from the output it's recognized correctly but seems soft blocked!?
You probably know that already, but I would recommend the following:

Code:

sudo rfkill list

If it shows "soft blocked yes", you can unblock with

Code:

sudo rfkill unblock 0

I would also recommend to (once again) set the correct country code with:

Code:

#Change "XX" to your country code, e.g. "DE" for Germany
sudo iw reg set XX

Make it permanent in the crda file (REGDOMAIN=XX) in

Code:

sudo nano /etc/default/crda