I can still see the wifi networks that are available and attempt to connect to them but the connection doesn't work. I'm using a laptop and I have connected to these networks successfully before the update. The wired networking works fine. Please help me. What other information do I need to post ?
Try the following command in your terminal as suggested in this thread:
sudo mv /lib/firmware/iwlwifi-3160-12.ucode /lib/firmware/iwlwifi-3160-10.ucode
I had this issue and it also affected my mouse - couldn't use mouse or connect to wifi. All devices were found, but I was getting a bunch of errors.
Turned out that I reset BIOS to factory defaults (then updated them to what I thought I needed) and this was my problem. I had to go back into the BIOS and find a little setting called "IOMMU". Enabling this solved all my issues.
I found this out by looking in dmesg and finding a little nugget that said something like "couldn't find MMU... disabling. blah blah...". Once it was enabled, the irq remapping gets enabled and (i guess) the IRQs don't bash anymore.
Anyways - hope this helps others in a similar situation.