WiFi disabled after everytime I boot Ubuntu 16.04

16.04 networking wireless network-manager

6,128

Solution 1

After lots of tries, installing wicd, uninstalling network-manager and then reverting back, I changed the /etc/rc.local file. I added
sudo ifconfig eno1 up
sudo service network-manager restart
before the exit 0 statement. What it basically does is, whenever the system changes its runlevel, that is shutdown, rebooting, or interchanging between multilevel and single user, the scripts are executed. So, I do not need to type it every time I booted, the rc.local file did it for me. I still don't know why it happened, but at least it's working.

Solution 2

So I've had a similiar problem but

sudo ifconfig <wifi logical name> up
sudo service network-manager restart

didn't fix my problem as rfkill had the wifi hard-blocked.

My solution - which may still help you though - was to edit the blacklist with:

sudo vim /etc/modprobe.d/blacklist.conf

adding the line(s):

blacklist wmi
blacklist asus_wmi
blacklist asus_nb_wmi

wmi (windows management instrumentation) often affects dual boot systems and may be disabling your wifi. Use

lsmod | grep wmi

to check what wmi modules are currently running on your system and then use blacklist to disable them. Worked for me!

6,128

Arindam

Updated on September 18, 2022

Comments

Arindam over 1 year

I did already post this question yesterday, but since I got no replies, I'm asking it again. Really hoping, you guys would be able to help me.

I'm a new Ubuntu user and have been using it just for the past 2 days. I saw that my wifi strength is much superior in windows than in Ubuntu. So, I thought of updating the wireless driver in Ubuntu. I am having a problem that my network is disabled after boot. I'm currently running dual boot with Windows 8.1. Here's the output of sudo lshw -C network :

*-network
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: enp8s0
       version: 07
       serial: 38:63:bb:72:97:97
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:4000(size=256) memory:b5600000-b5600fff memory:b5400000-b5403fff
  *-network DISABLED
       description: Wireless interface
       product: RT3290 Wireless 802.11n 1T/1R PCIe
       vendor: Ralink corp.
       physical id: 0
       bus info: pci@0000:0a:00.0
       logical name: eno1
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=RALINK WLAN latency=0 multicast=yes wireless=Ralink STA
       resources: irq:16 memory:b5510000-b551ffff

After I boot, I need to run these 2 commands:

sudo ifconfig eno1 up 
sudo service network-manager restart

It's really frustrating, that I need to run these 2 commands, everytime I boot my laptop. It started happening after I installed the rt3290 drivers as mentioned here https://askubuntu.com/a/593018/692756

After the commands, here's the output of sudo lshw -C network :

*-network
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: enp8s0
       version: 07
       serial: 38:63:bb:72:97:97
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:4000(size=256) memory:b5600000-b5600fff memory:b5400000-b5403fff
  *-network
       description: Wireless interface
       product: RT3290 Wireless 802.11n 1T/1R PCIe
       vendor: Ralink corp.
       physical id: 0
       bus info: pci@0000:0a:00.0
       logical name: eno1
       version: 00
       serial: c0:38:96:6e:ae:d7
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=RALINK WLAN ip=192.168.225.110 latency=0 multicast=yes wireless=Ralink STA
       resources: irq:16 memory:b5510000-b551ffff

Here's the output of iwconfig:

lo        no wireless extensions.

eno1      Ralink STA  ESSID:"BAZINGA"  Nickname:"RT3290STA"
          Mode:Managed  Frequency=2.422 GHz  Access Point: 18:A6:F7:EA:2C:64   
          Bit Rate=54 Mb/s   
          RTS thr:off   Fragment thr:off
          Link Quality=100/100  Signal level:-52 dBm  Noise level:-84 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

enp8s0    no wireless extensions.

The power management is not being shown, but I'm sure it's disabled, because the value of wifi.powersave = 2 in my /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf file.

hatterman almost 7 years

I wonder if the wireless card is blocked. At a command line try sudo rfkill unblock all. It's just a guess, something simple to eliminate.
Arindam almost 7 years

rfkill unblock all doesn't do anything. It returned a blank output. I needed to enable my interface eno1 and then restart network-manager.

Arindam almost 7 years

I've edited my question. My power management is off, but somehow it's not being shown in the iwconfig command.
Arindam almost 7 years

I didn't try your edited comment. I found a workaround. Thanks for your help.