ubuntu 16 - wifi unbale to scan my own ssid, but able to scan others people ssid

I am new to Ubuntu.

First problem: I have just install Ubuntu 16. when I enable Wi-Fi, only my neighbor SSID name is appear on the drop down column. I cannot see my own SSID.

Second problem: Then, I create new WiFi network.

I key in a connection name: wifiwork1, network name wifiwork. Then Wi-Fi security: WEP 128-bit passphrase and finally my key. I will show connected when click create.

However, when I check the Connection information, it is all wrong. The address is wrong --> IP Address is 10.42.0.1, suppose to be 192.168.0.xxx. Broadcast Address is 10.42.0.255, also wrong. The General information is 802.11 WiFi (wlp11s0), hardware Address is 00:13:02:54:FC:34 , driver is iwl3945, Speed: unknown and security is WEP.

Third problem: When I login to internet, it shows server cannot found.

1 Answer

Then, I create new WiFi network.

I key in a connection name: wifiwork1, network name wifiwork. Then Wi-Fi security: WEP 128-bit passphrase and finally my key. I will show connected when click create.

However, when I check the Connection information, it is all wrong. The address is wrong --> IP Address is 10.42.0.1, suppose to be 192.168.0.xxx

"Create New Wi-Fi Network" is intended for computer-to-computer; that is, ad-hoc connections. That is not what you want. Please remove all those settings and restart Network Manager:

sudo service network-manager restart

Make certain that your wireless interface is not set to ad-hoc:

iwconfig

It should read: Mode: Managed. If not, change it:

sudo iwconfig wlp11s0 mode managed

My actually router is configure as the following: Wireless security mode is Enable WPA/WPA2 Wireless Security (enhanced), Cipher Type is AUTO (TKIP/AES), PSK/EAP is PSK, Network key is 8~63 ASCII or 64 HEX.

WPA2-AES is preferred; not any WPA and WPA2 mixed mode and certainly not TKIP. Second, if your router is capable of N speeds, you may have better connectivity with a channel width of 20 MHz in the 2.4 GHz band instead of automatic 20/40 MHz, although it is likely to affect N speeds. I also have better luck with a fixed channel, either 1, 6 or 11, rather than automatic channel selection. Also, be certain the router is not set to use N speeds only; auto B, G and N is preferred. After making these changes, reboot the router.

Next, I recommend that your regulatory domain be set explicitly. Check yours:

sudo iw reg get

If you get 00, that is a one-size-maybe-fits-all setting. Find yours here: Then set it temporarily:

sudo iw reg set IS

Of course, substitute your country code if not Iceland. Set it permanently:

gksudo gedit /etc/default/crda

Use nano or kate or leafpad if you don't have the text editor gedit.

Change the last line to read:

REGDOMAIN=IS

Proofread carefully, save and close the text editor.

Next, I'd set IPv6 to Ignore in Network Manager: This example is for ethernet, but you want wireless.

Reboot the router and the computer and check:

sudo iwlist scan

Do you see your network?