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I did a fresh install of Ubuntu 17.04 (gnome) but for some reason, I am not able to connect to the wifi network using Ralink 802.11n Wireless LAN Card (USB).

I am able to see all the available network but when I try to connect it keeps trying to connect for around 20 to 30 seconds and it automatically stops. I am able to connect to those networks from my laptop which also has Ubuntu 17.04 installed.

Wifi Network List Screenshot

lsusb output:

kevin@My-PC:~$ lsusb
Bus 002 Device 002: ID 8087:8001 Intel Corp. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8009 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 1058:259f Western Digital Technologies, Inc. 
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 04d9:1702 Holtek Semiconductor, Inc. Keyboard LKS02
Bus 003 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 003 Device 004: ID 148f:7601 Ralink Technology, Corp. MT7601U Wireless Adapter
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
kevin@My-PC:~$

Here is the error log that I believe relates to the issue:

wpa_supplicant
dbus: Failed to construct signal
dbus: wpa_dbus_get_object_properties: failed to get object properties: (none) none

Networkmanager
((devices/nm-device.c:970)): assertion '<dropped>' failed

I have tried restarting the PC, disabling and enabling the wifi and inserting the device into the different USB port.

Update: The issue is only with Ubuntu 17.04. I installed Ubuntu 16.04 and it worked out of the box.

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1 Answer 1

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This... "feature" was introduced in 17.04, somewhere around kernel version 4.10, I believe.

Try if this works for you:

Edit /etc/NetworkManager/NetworkManager.conf

And add lines:

[device]  
wifi.scan-rand-mac-address=no

Then restart network-manager:

sudo service network-manager restart 

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