In Lubuntu 15.04 wifi there is a bug that causes the wifi to not re-connect after the suspend state is removed. I’ve found a simple fix to remedy this situation.
I’m using a Acer laptop with the AR9462 Wireless Network Adapter, but this seems to be a generic fix from what I can see so far.
We need to create a file under /etc/pm/config.d/ and add a instruction to suspend a kernel module. So, fire up your terminal and edit the file.
Then add this line into the new file:
I’ve found this quick fix to work well on suspend resume on Lubuntu 15.04.