How can i get my USB wifi to work after a reboot?

Question

I have a Wordpress website that has a horizontal menu bar with a drop down sub-menu that appears when hovering over the parent menu item. The links to the sub menu works in a regular browser, however, when using my iPhone, the links to the sub menu do not work. It previously worked only in a long press mode, but I didn't want the long press mode so I added the following code in my CSS to remove the long press mode:

.navWrap .top-bar2 li.menu-item {
    -webkit-user-select:none;
    -webkit-touch-callout: none!important;
}

and I also added the following javascript (because the CSS didn't work and some people suggested the javascript solution):

<script type='text/javascript'>document.documentElement.style.webkitTouchCallout = "none";</script>

You can test this by going to the following link: http://sa4iserver1.com/~hoffer/ -- at this time, the only menu item that has a drop down sub-menu is the RENT menu item.

Any suggestions on how to make the sub-menu links clickable via iPhone/iPad would be greatly appreciated!

Solution 1

First you need to identify the driver for your USB wifi adapter. Execute the following command to get the list of network adapters lshw -C network Following is the kind of output you might notice

  *-network:0
       description: Wireless interface
       physical id: 1
       bus info: usb@3:5
       logical name: wlx542aa25b496d
       serial: 54:2a:a2:5b:49:6d
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rtl8xxxu driverversion=5.0.0-32-generic firmware=N/A ip=172.16.61.0 link=yes multicast=yes wireless=IEEE 802.11

Check the driver and note it down. Assume it is rtl8xxxu and you can use following commands to unplug or plug the adapter via commands

sudo modprobe -r rtl8xxxu
sudo modprobe rtl8xxxu

Since this again is manual invocation, you can add the commands in /etc/rc.local Add the following code just before exit 0

modprobe -r rtl8xxxu
sleep 1
modprobe rtl8xxxu

Int Ubuntu 18.04 the rc.local file doesn't exists, so you can create with sudo nano /etc/rc.local Add the following part which is taken from Ubuntu 16.04's stock /etc/rc.local file to automate it on system boot

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

exit 0

Then add the uplug/plug code before exit 0. You'll need to make the file executable by sudo chmod +x /etc/rc.local. Reboot and see if this works or not

Solution 2

You can activate the wlan by these commands instead of repluging:

sudo modprobe -r 8192eu
sudo modprobe 8192eu

You need change 8192eu to your own wlan name. If you don't know the name, search on google with keyword ID 148f:2070(your usb wlan's id which can be found by command lsusb).

Or you can just add the wlan name to /etc/modules:

sudo -i
echo 8192eu >> /etc/modules
exit

Then the wlan will be activated automatically when system start.

Comments

[reukiodo]

adding 'modprobe rtl8xxxu' into /etc/rc.local is the only thing that allowed my Edimax EW-7811UN to work on boot (fresh or reboot) every time without fail

[reukiodo]

adding 'rtl8xxxu' into /etc/modules did not work for me with Edimax EW-8711UN ... wifi was always unavailable after fresh boot - found out later that the module was blacklisted by default and had to remove the default blacklist from /etc/modprobe.d/blacklist-*.conf