I know many people are having this problema, but any of the solutions seems to work. My wifi was working perfectly with 13.04, but when I updated to 13.10 it just seems that my laptop doesn't have a wifi.
As requested by experienced users in other posts, this is the output of lspci
ubuntu@ubuntu:~$ lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family
14h Processor Root Complex 00:01.0 VGA compatible controller: Advanced Micro Devices,
Inc. [AMD/ATI] Wrestler [Radeon HD 6310] 00:01.1 Audio device: Advanced Micro Devices,
Inc. [AMD/ATI] Wrestler HDMI Audio 00:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 14h Processor Root Port 00:11.0 SATA controller: Advanced Micro Devices, Inc.
[AMD] FCH SATA Controller [AHCI mode] 00:12.0 USB controller: Advanced Micro Devices,
Inc. [AMD] FCH USB OHCI Controller (rev 11) 00:12.2 USB controller: Advanced Micro
Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11) 00:13.0 USB controller: Advanced
Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) 00:13.2 USB controller:
Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11) 00:14.0 SMBus:
Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 14) 00:14.2 Audio device:
Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01) 00:14.3 ISA bridge:
Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11) 00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40) 00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0) 00:15.1 PCI bridge: Advanced
Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 1) 00:15.2 PCI bridge:
Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 2) 00:18.0 Host
bridge: Advanced Micro Devices, Inc. [AMD] Family 12h/14h Processor Function 0 (rev 43)
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 12h/14h Processor Function
1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 12h/14h Processor
Function 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 12h/14h
Processor Function 3 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family
12h/14h Processor Function 4 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD]
Family 12h/14h Processor Function 6 00:18.6 Host bridge: Advanced Micro Devices, Inc.
[AMD] Family 12h/14h Processor Function 5 00:18.7 Host bridge: Advanced Micro Devices,
Inc. [AMD] Family 12h/14h Processor Function 7 03:00.0 Ethernet controller: Realtek
Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)
07:00.0 Network controller: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe 07:00.1
Bluetooth: Ralink corp. RT3290 Bluetooth 08:00.0 Unassigned class [ff00]: Realtek
Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
ubuntu@ubuntu:~$