Problem
Connected to my wireless router at home won't give me internet access.
What happened
Several days ago I was connected to the Wifi router at home and everything works like a charm. Then I closed my Thinkpad and it was send to hibernate mode. Later at the university I was also able to connect to their WPA2-Enterprise (radius-managed) Wifi.
Back at home, I wake up my laptop, fired up the Wifi connection, got an IP, but then nothing works. I have no internet connectivity.
All ping requests to public IPs and Domain Servers timed out.
The Wifi router was also not reachable via ping (which may be an security feature).
Things done so far
- Reconnected serveral times to the router
- Deleted the credentials of the networkmanager and entered it again
- Restarted the networkmanager using
sudo service network-manager restart
- Installed wicd and disabled networkmanager at boot by renaming it's startup files
- Inspected
rfkill
to see, if there is something blocking the wireless interface - Booted a linux live CD to see, if theres any issue to the configuration files
Booting my windows partition and connecting to the wifi router give me internet access as usual.
System
Linux Mint 17
wlan0: Intel wifi interface
What else can I do?
Best Answer
Looking at your description, it's not very likely that any of these help, but maybe it's still worth trying.
What could be wrong?
How to check what's wrong
wlan0
andDHCP
in/var/log
files like/var/log/messages
,/var/log/dmesg
and/var/log/syslog
./sbin/ifconfig
. Theinet
address ofwlan0
should be present, not be link-local (169.254.*.*
), and have a reasonableMask
, usually255.255.255.0
. If you dial-in on DSL or ISDN, yourMTU
should probably be1492
, not1500
. Example:/sbin/route -n
. Example:ping 198.41.0.4
(one of the DNS root servers) succeeds butping ietf.org
fails, your DNS setup is bogus.