In my laptop I have a
rtl8723b2 network adapter installed which usally works just fine. I have no problems whatsoever unless I am in a certain room.
In there the wifi sometimes works just fine and other times the network manager says that I am connected to the wifi but I can't access any websites (or anyting else related to the internet).
If I try to open a website it just gets stuck on
Looking www.example.com so I thought there might be a problem with the DNS setup but when using
ping 184.108.40.206 -c5 it won't get any responses as well.
ping command doesn't bail out stating that there is no internet connection. Instead it says that it has sent all packages but received none (reproducable with other IPs as well).
I know for a fact that the wifi signal in that specific room can be kinda problematic but the network manager displays a wifi signal strength of ~ 70% on average which indicates (to me) that this doesn't seem to be an issue.
Purely from the observations (wifi connected but still no internet access) I thought it might have something to do with the powersave-mode of the wifi adapter as described here. Therefore I tried using the
fwlps=0 option (I even tried the
ips=0 option) but this didn't resolve the problem.
One ting to mention though is that this state of "connected without internet access" can most of the times be resolved by disconnecting from and reconnecting to the wifi network several times or by reloading the respective kernel module via
sudo modprobe -r rtl8723be and
sudo modrpobe rtl8723be. There are even cases in which the internet access restored itself after a while.
The problem will come up eventually every time I use my laptop in this room. Sometimes it's there directly after booting and sometimes I can surf the internet for a few hours befor it appears.
I have this problem in Linux Mint 18 as well as in Manjaro Linux (which uses the 4.9.52-1-MANJARO kernel).
Does anybody have an idea on what's going on here or even how to fix it?
Note: I also tried plugging in a USB wifi adapter and using that for accessing the internet but the problem did not get solved with that either.
EDIT: My complete "config-file" for the network adapter looks like this:
options rtl8723be fwlps=0 ips=0 ant_sel=1