Using wifi connection or 3G connection I can access Internet but when I'm trying to install updates through the software updater it says no Internet connection. When I try ping google.com it also failed. But using browser I can surf Internet without any problem, I'm bored with this problem already, can any one please help me to solve this?


That sounds a lot like a proxy issue. Check if you are using a proxy to browse the internet (firefox or whatever browser you are using) and replicate the setting to your network proxy sttings of the system. You can also use thr /etc/environment file to setup the proxy by adding a line http_proxy entry . This will equally for for https_proxy and ftp_proxy. Or, if no proxy exist on browser, verify that system isn't using one as well. After changing this do a network restart.

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