Loss of internet with good wireless connectivity

[jeremy31]

For some reason your firewall is very active when you have no internet connectivity, try disabling UFW and see if the problem persists
It wouldn't hurt to do this

sudo iw reg set US

if iw is not installed for whatever reason then

sudo apt-get install iw

Then repeat the sudo iw reg set US command

[mark-lamorey]

Ok, I see that now that UFW is blocking (not sure why I missed that)
- I will try to track down which PID it is blocking first - not sure if worthwhile.

I have IW installed, and curious what the "set US" command does.
"MAN IW" has very limited information

[mark-lamorey]

Looks like I I can restart networking if I turn disconnect from my wireless and turn off Gufw, and then reconnect to the wireless port.
I will try to keep track of in what order I turn things back on to see if it makes a difference.

If I understand this correctly my network connection for Ubuntu is getting shut down because my firewall is going haywire ?
Or is it because of malicious activity (inside to outside or vice versa). Any thoughts on how can I tell the difference on all counts ?

[mark-lamorey]

After much help and continued searching I think this is fixed - the key was searching on RTL8723BE and then I saw many others with a very similar problem.

Running the below seemed to make everything stable :
echo "options rtl8723be fwlps=N ips=N" | sudo tee /etc/modprobe.d/rtl8723be.conf

If I understand things it keeps the wireless from going into sleep of power saving mode as the driver does not seem to wake up properly.

Thanks to all ...