My wifi worked perfect until I updated to the latest version of Ubuntu. Now I don't find any wireless connections at all.
I have tried lots of guides on the internet but I can't get it to work. I did however start to work once after writing something I don't remember in Terminal, but after rebooting it stopped working again.
Some info (don't know if you need more to help):
01:00.0 Ethernet controller: Atheros Communications AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0) Subsystem: Acer Incorporated [ALI] Device 022c Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at 55200000 (64-bit, non-prefetchable) [size=256K] I/O ports at 3000 [size=128] Capabilities:  Power Management version 2 Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities:  Express Endpoint, MSI 00 Capabilities:  Advanced Error Reporting Capabilities:  Device Serial Number ff-93-2e-de-00-23-8b-ff Kernel driver in use: ATL1E Kernel modules: atl1e 02:00.0 Ethernet controller: Atheros Communications Inc. AR242x / AR542x Wireless Network Adapter (PCI-Express) (rev 01) Subsystem: Foxconn International, Inc. Device e00d Flags: bus master, fast devsel, latency 0, IRQ 18 Memory at 54100000 (64-bit, non-prefetchable) [size=64K] Capabilities:  Power Management version 2 Capabilities:  MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities:  Express Legacy Endpoint, MSI 00 Capabilities:  MSI-X: Enable- Count=1 Masked- Capabilities:  Advanced Error Reporting Capabilities:  Virtual Channel Kernel driver in use: ath5k Kernel modules: ath5k