ubuntu 14.04 is not "out of the box"

the REALTECH V3 chipset is recognized natively by ubuntu, plug, and it was the signal, flow, etc .... but that's just bargraphs.
in practice, the rest signal (for me), to 60%, and the rate varies from 7 to 72Mbps. 72, one can surf. Unfortunately, only 5% of the time. 7 Mbps, nothing happens. unusable, therefore.

the fault lies with a wooden driver. to have the right driver, and surf the cleat (100% signal, and 144Mbs) that really works, follow the simple indacations this site: there are only few copy / paste to do.
pvaret / fixed-rtl8192cu

roxe after that!

this module has a much more powerful and stable signal that built my laptop under lubuntu, or the son of my pci xp. 7 under the install is done alone by win update. XP CD delivered works well, and for linux, you have the procedure.

if I break it, well, he did not look so fragile as this, I bought the same.