I'm running Ubuntu 14.04 alongside Windows 7 on a Lenovo Ideapad Z580. I have been having problems recently in connecting to the Internet since I've switched to a new router namely Edimax AR-7286WnA. Now, I can connect to the Internet using the same router connection absolutely well on Windows 7, whereas such has not been my fate in Ubuntu. The problem even though small, becomes even more frustrating when I connect Ubuntu to my mobile phone's hotspot and even then it doesn't work.
Ubuntu easily connects to both the connections but when I try to browse any page on Mozilla Firefox, it just keeps on loading for a while and then gives up!
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 05)
Subsystem: Lenovo Device [17aa:3975]
Kernel driver in use: r8169
03:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:0587]
Kernel driver in use: bcma-pci-bridge
Wifi diagnostic script result: http://paste.ubuntu.com/10132109/
I am an absolute newbie to Ubuntu and thus would need a descriptive help and solution to this problem.