Cannot find wireless networks in xenial

[musanage]

I have Ubuntu Xenial(16.4.0.2) installed and unable to find wireless networks to connect to. Wireless switch is on and wireless networking is enabled and the device is in a up state

wlp2s0 Link encap:Ethernet HWaddr 94:53:30:4d:84:27
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
More information on my setup:

$ lspci -nn | grep 0280
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]

$ lsusb
Bus 001 Device 004: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 001 Device 003: ID 05c8:0383 Cheng Uei Precision Industry Co., Ltd (Foxlink)
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 0bda:b006 Realtek Semiconductor Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

$ rfkill list all
0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

 $ dmesg | grep -e wlan -e b43
[ 15.006188] rtl8723be 0000:02:00.0 wlp2s0: renamed from wlan0

$ sudo modprobe b43
$
This is a dual boot system and when I boot with Windows 10, I am able to find wireless networks and connect successfully with the same hardware.

Tried workaround mentioned in How do I get a Realtek RTL8723BE wireless card to work? but did not help.

Ubuntu is able to find wireless connection at home without any problem. When I go to a library, that's when Ubuntu fails to pick up any wireless network.

Rebooted Ubuntu and captured syslog messages when I was in a library. Syslog messages available at
http://pastebin.com/W4BuC74W

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1666257/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[musanage (vasanthappa)]

Could not find a right source package. Chose the closest one 'wireless-crda'. Please assign it to the right component.