I just installed Ubuntu 13.04 with my Pavilion dv6. My laptop originally was operated under Windows 7. My WiFi worked fine when it was still on Windows 7. However, after I changed the OS to Linux using Ubuntu 13.04, the WiFi stopped working anymore. I can see the network list. I can also use wired network, and it is fine. I just cannot connect to my router even with the correct password.
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 06) 02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01) 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01) 03:00.1 SD Host controller: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01)