This question has been asked repeatedly, but none of the suggestions out there have worked for me. So I would appreciate any help specific to my case.
Even when Wifi is connected, I don't have internet connection. Usually this is fixed when I restart the modem (not the computer or the connection on my computer) and then the internet connection persists for about 30 to 90 minutes before I repeat the same procedure. All other computers on this network don't seem to have this problem. And my computer has this exact same issue with some other wifi networks (not all of them).
While I'm connected to the problem wifi network, here are some details:
~$ iwconfig
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"o2-WLAN27"
Mode:Managed Frequency:2.427 GHz Access Point: 9C:80:DF:61:E7:9E
Bit Rate=19.5 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=39/70 Signal level=-71 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:498 Missed beacon:0
The next command :
~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0
192.168.1.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
The next command:
~$ sudo lshw -C network
*-network
description: Ethernet interface
product: AR8152 v2.0 Fast Ethernet
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:01:00.0
logical name: eth0
version: c1
serial: b8:70:f4:15:40:c3
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.1-NAPI latency=0 link=no multicast=yes port=twisted pair
resources: irq:43 memory:d0500000-d053ffff ioport:2000(size=128)
*-network
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 01
serial: 68:a3:c4:9a:4f:96
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.13.0-125-generic firmware=N/A ip=192.168.1.4 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 memory:d0400000-d040ffff
