Hello Mr Toan Thank you very much for detail explain, my device is embedded device. I am sure ralink is not having problem as with another devlopment board which has SMPS connected, it does not show problem. HW may not designed for this device, as the current requirement will increase if the wifi AP is kept at big distance. I want to try with power usb hub, need to check in my stock if i have some thing like that. Will update on it. regards Suman On Fri, Oct 29, 2010 at 7:24 PM, Toan Pham <tpham3783@xxxxxxxxx> wrote: > Suman, > > I had no problem using Ralink usb-ethernet adapter. I used it on > Ubuntu 7.1 with a rebuilt kernel, Backtract 3&4, and even windows. As > a matter of fact I left the card running over two nights to obtain > enough IVs on wifi network, it had no problem what-so-ever, although > it was relatively hot to the touch. I haven't been using the card > since, but if you want; I can retry using in on Ubuntu 10.10 (kenel > 2.6.35-22-generic, i think). > > I agree with Alan and Greg that overcurrent is a HW issue. Upgrading > kernel is probably not going to help. You should try to use Y-split > usb-cable and/or powered usb hub. > > > -toan > -- Rgds Vijayendra Suman The only basis for a true and lasting unity of all humanity is the religion of the heart. The religion of the heart is the religion of love. People can only be united if they are free from jealousy, hatred and petty-mindedness. Purify your heart first. Meet hatred with love and malice with goodwill. The purer you make your heart, the greater will be the power of your love. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html