There are several items in your wireless info report that are concerning. First, there are two competing and probably needless declarations for module parameters. I suggest that they be removed entirely.
sudo rm /etc/modprobe.d/50-rtl8723be.conf
sudo rm /etc/modprobe.d/rtl8723be.conf
Next, netplan is not set correctly.
sudo nano /etc/netplan/01-network-manager-all.yaml
Add these lines:
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
Netplan is very specific about spacing and indentation so proofread carefully twice. Save (Ctrl+o followed by Enter) and exit (Ctrl+x) the text editor. Follow with:
sudo netplan generate
sudo netplan apply
resolv.conf is not set correctly.
sudo rm /etc/resolv.conf
sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf
You have no 8192eu device so let’s remove its declaration:
sudo nano /etc/modules
Remove the 8192eu line. Save and exit nano as above.
Reboot, disconnect the USB ethernet and see if Network Manager takes over the wireless. In any event, let us see:
sudo dmesg | grep rtl
EDIT: You may need a driver parameter. Please do:
sudo modprobe -r rtl8723be
sudo modprobe rtl8723be ant_sel=1
Is there any improvement? If not try the sequence again with ant_sel=2. Tell us which improves the signal strength and we'll wite one file to make it persistant.
