Problems changing the wifi network

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi,

I’ve a problem with my wifi network and the Jetson Nano (Edimax 7811UN Wifi stick and the “fixed” drivers).

When I boot/reboot the device, it connects automatically to the wifi network. Fine.

But I have to change the wifi network to a second one, which is also running at my home…

I tried to switch to the new wifi network via Ubuntu desktop, nmtui and nmcli. I can see the second wifi network in the list, but when I try to connect I get the error message: “The Wi-Fi network could not be found”…

I tried the nmtui with “sudo” and without.

When I now try connect to my “normal” wifi network, which was running after the boot/reboot, I get the same error message and I can’t connect to any wifi network.

After rebooting it connects to the normal or to the second wifi network and everything is starting again when I try to switch…

sudo iwlist scan

shows:

wlan0     Scan completed :
          Cell 01 - Address: 30:5A:3A:C6:F8:A8
                    ESSID:"wifi network 2"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.452 GHz (Channel 9)
                    Encryption key:on
                    Bit Rates:144 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DDAE0050F204104A0001101044000102103B0001031047001051700680CAC320E8E13045AC4B84344F102100154153555354654B20436F6D707574657220496E632E1023001C57692D46692050726F74656374656420536574757020526F757465721024000852542D41433638551042001133303A35613A33613A63363A66383A61381054000800060050F20400011011000852542D4143363855100800022008103C0001031049000600372A000120
                    Quality=52/100  Signal level=59/100            
          Cell 04 - Address: F4:06:8D:B6:85:E9
                    ESSID:"wifi-network 1"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD980050F204104A0001101044000102103B0001031047001021B8E9E59BBE550E8F5906DADC50CBFD10210007756E6B6E6F776E10230018486F6D65506C756720415620576972656C6573732041502010240003312E3010420003312E301054000800060050F204000110110017486F6D65506C756720415620576972656C65737320415010080002200C103C0001011049000600372A000120
                    Quality=48/100  Signal level=100/100

(I deleted the networks from the neighbors in the output…)

The network names are only one word long, without blanks or other special characters in it.

Do you have an idea?

Thanks, Lars

2

Hi,

I suggest to use the paired command to connect and delete.
If connect with nmtui , just use nmtui to disconnect.

sudo nmcli dev wifi con "***" password "***"
sudo nmcli connection delete