I have two laptops running Ubuntu 12.04. The first laptop is connected to the internet via ethernet and this connection has a high rate.
Using Network Connections I set up a new wireless connection in the AdHoc mode on the both laptops. The connection works, I have the internet on the second laptop.
The problem is low rate (up / down = 0.7 Mb/s / 0.7 Mb/s) on the second laptop. The first laptop has high rate (up / down = 40 Mb/s / 70 Mb/s). The rates are obtained by speedtest.
This is not a hardware problem, because several days ago the both laptops were connected to the ADSL-router via the wifi connection and the internet rate was high.
How can I speed up my wireless connection?