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I have a Dell Studio 1450 running Fedora 17. I installed a new wireless router in the office recently. And everybody apart from me is able to connect to the internet via it. Google revealed http://forums.fedoraforum.org/showthread.php?t=276645 which is very similar to my problem. Here are output logs of some commands for you to help me.

$ ifconfig wlan0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet  netmask  broadcast
        inet6 fe80::222:fbff:febd:a1d4  prefixlen 64  scopeid 0x20<link>
        ether 00:22:fb:bd:a1:d4  txqueuelen 1000  (Ethernet)
        RX packets 217025  bytes 207399872 (197.7 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 140947  bytes 22960122 (21.8 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

$ ping -c 3
PING ( 56(84) bytes of data.
--- ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 1999ms

$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface         UG    0      0        0 wlan0   U     0      0        0 wlan0

$ cat /etc/resolv.conf 
# Generated by NetworkManager


EDIT 1: outputs from other machine running Linux Mint, normally working on the network.

$ ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr e0:ca:94:8a:f4:08  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::e2ca:94ff:fe8a:f408/64 Scope:Link
          RX packets:795989 errors:0 dropped:0 overruns:0 frame:0
          TX packets:729687 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:871899683 (871.8 MB)  TX bytes:83227427 (83.2 MB)

$ ping -c 3
PING ( 56(84) bytes of data.
64 bytes from icmp_req=1 ttl=64 time=1.12 ms
64 bytes from icmp_req=2 ttl=64 time=1.17 ms
64 bytes from icmp_req=3 ttl=64 time=1.12 ms

--- ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 1.123/1.139/1.172/0.035 ms

$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface         UG    0      0        0 wlan0     U     1000   0        0 wlan0   U     2      0        0 wlan0

$ cat /etc/resolv.conf
cat: /etc/resolv.conf: No such file or directory

UPDATE: It is not a problem with fedora, it is my laptop. I tried with other distros (Ubuntu 12.04 anh Bodhi Linux) and the same problem exists.

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One quick thing to try - get the same output from one of your colleagues' machines... – Rory Alsop Feb 6 '13 at 10:05

Anurat - Try assigning a static IP address instead of getting it from DHCP to your wireless interface and ping the gateway. Your router might be blocking traffic from a certain IP range. In particular, try to use an IP address assigned to another client in your network that has Internet access.

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Great idea. Usurping the IP address used by somebody else won't work while they are using it, and will block their use if you come "first". – vonbrand Feb 11 '13 at 3:44
up vote 0 down vote accepted

It was a problem with my hardware. The new router was running an 802.11n network while Intel WiFi link 5100 card in my Dell Studio 1450 doesn't support it. Other laptops in the office being comparatively newer were operating perfectly.

Solution: Changed router settings to run on b/g mode and everything is back in order now.

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