Ubuntu: Internet connection really slow on my Ubuntu 12.04 using D-Link DWA-510


I installed Ubuntu today and I'm now dual booting Windows 8 and Ubuntu 12.04.

For some reason, the wireless is really slow on my Ubuntu. It works fine sometimes, but then gets really slow. I checked the connection on other laptops, ipads in my house and it works fine there.

For some reason, Ubuntu is slowing down my wireless. How should I go about debugging this?

Output of lspci -v

05:01.0 Network controller: Ralink corp. RT2561/RT61 rev B 802.11g      Subsystem: D-Link System Inc DWA-510 Wireless G Desktop Adapter  Flags: bus master, slow devsel, latency 32, IRQ 19  Memory at ea100000 (32-bit, non-prefetchable) [size=32K]  Capabilities: <access denied>  Kernel driver in use: rt61pci  Kernel modules: rt61pci  


Please do:

echo "options rt61pci nohwcrypt=1" | sudo tee /etc/modprobe.d/rt61pci.conf  sudo modprobe -rfv rt61pci  sudo modprobe -v rt61pci  

It changes encryption from hardware to software and in many cases makes the connection faster and more stable.

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