(SOLVED) USB wifi stops working after waking up from standby

I have Zorin OS Core 10 on a laptop and manually installed a rtl8812au driver for a Glam Hobby 600Mbps AC600 Dual Band USB WiFi Dongle & Wireless Network Adapter. The wifi works great except after I open the laptop lid and the laptop wakes up from standby. It sees available networks but does not connect automatically and when I try to connect manually it stops working altogether. If I reboot, everything works great again.

Any suggestions on what I might need to do to get it to work after waking up from standby?

Always best to do some research before buying:

http://www.htpcbeginner.com/linux-compa ... ters-2012/

That said, I think there has always been some issues with 'hibernation/sleep' mode with GNU/Linux - which is somewyas to do with the Kernel, and others in respect of Hardwarre manufacturers making things more compatible with Windows than GNU/Linux.

I fixed it by following instructions here http://www.webupd8.org/2013/01/fix-wireless-or-wired-network-not.html

Hi, thanks for getting back to us - this will help other forum members. Will mark as [SOLVED].

Not sure why but the solution I mentioned doesn't work 100% of the time when I open the lid.

As a band aid I've been keeping a terminal window open with

Code:

/etc/init.d/networking restart

as the last command entered so that I only have to press the up arrow to bring it up again and then ENTER and the root password to get the wifi adapter working again.

Would be interested in any other suggestions for a better solution.

madvinegar? (This is not a suggestion but a request to madvinegar the mod for input)

What is the wireless driver you are using? rtl8812au ?
You can run the command

Code:

lspci -nnk | grep -iA2 net

to verify it.

Lets assume that the driver is indeed rtl8812au

Open terminal and run

Code:

sudo gedit /etc/pm/config.d/modules

Inside add the line:

Code:

SUSPEND_MODULES="rtl8812au"

Suspend the laptop and see of that works.
If the above is not enough, do also the following. Open terminal and run:

Code:

sudo gedit /usr/lib/pm-utils/sleep.d/0000wireless

Inside, copy paste the following:

Code:

#!/bin/sh

# reload rtl to get wireless to recover properly

case "$1" in
resume|thaw)
rmmod rtl8812au
modprobe rtl8812au
;;
esac

Save and close the file.
Then in terminal run:

Code:

sudo chmod a+x /usr/lib/pm-utils/sleep.d/0000wireless

Suspend the laptop and see of that works.

Thanks much madvinegar. The first option appears to have done the trick. Glad you included the step about how to confirm the driver because somehow it was not the one I said. Really appreciate your help.

Glad I helped my friend.