Ubuntu 12.04 + Wifi not working
- by user171154
i'm having problems connecting over wireless. At the moment, I'm using wicd. It seems to get stuck on "Verifying AP association...". Without wicd I can get the connection up and ping the Net - but if I take eth0 down (ifconfig eth0 down), my wireless goes away too (same result if I unplug the wire instead). wicd is the only way I can bring eth0 back (which is the main reason I'm using it) - ifconfig eth0 and/or ifup eth0 do not re-enable the connection (I just discovered it leaves out the gateway. Adding the gateway back in re-enables the connection including wifi; I didn't want to delete the info about wicd above in case it gives someone an idea.)
Doing it manually, despite the errors (which it would be nice to also resolve) - allows me to ping the outside world:
ifup wlan0
ioctl[SIOCSIWENCODEEXT]: Invalid argument
ioctl[SIOCSIWENCODEEXT]: Invalid argument
ssh stop/waiting
ssh start/running, process 17336
ping -I wlan0 -c 4 8.8.8.8
PING 8.8.8.8 (8.8.8.8) from 192.168.0.12 wlan0: 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_req=1 ttl=43 time=48.8 ms
64 bytes from 8.8.8.8: icmp_req=2 ttl=43 time=47.9 ms
64 bytes from 8.8.8.8: icmp_req=3 ttl=43 time=48.7 ms
64 bytes from 8.8.8.8: icmp_req=4 ttl=43 time=53.2 ms
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 47.975/49.711/53.235/2.063 ms
# iwconfig
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"TPLINK"
Mode:Managed Frequency:2.427 GHz Access Point: 64:66:xx:xx:xx:22
Bit Rate=108 Mb/s Tx-Power=27 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-39 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:3 Missed beacon:0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 01
serial: f0:7d:68:c1:b4:13
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.2.0-67-generic-pae firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 memory:dfbf0000-dfbfffff
ip route
default via 192.168.0.1 dev eth0
default via 192.168.0.1 dev wlan0 metric 100
169.254.0.0/16 dev wlan0 scope link metric 1000
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.102
192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.12
(For the record, I have no idea what the 169.254.0.0 address is doing there.)
uname -a
3.2.0-67-generic-pae #101-Ubuntu SMP Tue Jul 15 18:04:54 UTC 2014 i686 i686 i386 GNU/Linux
lshw -C network
*-network
description: Ethernet interface
product: NetXtreme BCM5751 Gigabit Ethernet PCI Express
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 01
serial: 00:11:11:59:fc:09
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.121 duplex=full firmware=5751-v3.23a ip=192.168.0.102 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:16 memory:dfcf0000-dfcfffff
*-network
description: Wireless interface
product: AR5418 Wireless Network Adapter [AR5008E 802.11(a)bgn] (PCI-Express)
vendor: Qualcomm Atheros
physical id: 0
/etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
source /etc/network/interfaces.eth0
source /etc/network/interfaces.wlan0
/etc/network/interfaces.eth0
#Main Interface
auto eth0
iface eth0 inet static
address 192.168.0.102
netmask 255.255.255.0
gateway 192.168.0.1
/etc/network/interfaces.wlan0
auto wlan0
iface wlan0 inet static
address 192.168.0.12
gateway 192.168.0.1
dns-nameservers 192.168.0.1 8.8.8.8
netmask 255.255.255.0
wpa-driver wext
wpa-ssid TPLINK
wpa-ap-scan 1
wpa-proto RSN
wpa-pairwise CCMP
wpa-group CCMP
wpa-key-mgmt WPA-PSK
wpa-psk dca1badb5fd4e9axxx4xxdaaxxfa91xx610bxx6a7d57ef67af9809dxx6af42e39
/etc/wpa_supplicant.conf
ctrl_interface=/var/run/wpa_supplicant
network={
ssid="TPLINK"
psk="my password"
key_mgmt=WPA-PSK
proto=RSN
pairwise=CCMP
group=CCMP
}
ifdown eth0
ifdown: interface eth0 not configured
ifconfig
eth0 Link encap:Ethernet HWaddr 00:11:xx:xx:xx:09
inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::211:11ff:fe59:fc09/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:213690 errors:0 dropped:0 overruns:0 frame:0
TX packets:155266 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:220057808 (220.0 MB) TX bytes:21137696 (21.1 MB)
Interrupt:16
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:196412 errors:0 dropped:0 overruns:0 frame:0
TX packets:196412 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:153270697 (153.2 MB) TX bytes:153270697 (153.2 MB)
wlan0 Link encap:Ethernet HWaddr f0:7d:xx:xx:xx:13
inet addr:192.168.0.12 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::f27d:68ff:fec1:b413/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11335 errors:0 dropped:0 overruns:0 frame:0
TX packets:7287 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2563290 (2.5 MB) TX bytes:855746 (855.7 KB)
ifconfig eth0 down
ifconfig
eth0 Link encap:Ethernet HWaddr 00:xx:xx:xx:xx:09
inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::211:11ff:fe59:fc09/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:192 (192.0 B) TX bytes:94 (94.0 B)
Interrupt:16
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:196418 errors:0 dropped:0 overruns:0 frame:0
TX packets:196418 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:153270871 (153.2 MB) TX bytes:153270871 (153.2 MB)
wlan0 Link encap:Ethernet HWaddr f0:7d:xx:xx:xx:13
inet addr:192.168.0.12 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::f27d:68ff:fec1:b413/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11359 errors:0 dropped:0 overruns:0 frame:0
TX packets:7293 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2565482 (2.5 MB) TX bytes:856363 (856.3 KB)
ip route
default via 192.168.0.1 dev wlan0 metric 100
169.254.0.0/16 dev wlan0 scope link metric 1000
192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.12
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.102
ping -I wlan0 -c 4 8.8.8.8
PING 8.8.8.8 (8.8.8.8) from 192.168.0.12 wlan0: 56(84) bytes of data.
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3024ms
ping -I eth0 -c 3 router
PING router (192.168.0.1) from 192.168.0.102 eth0: 56(84) bytes of data.
--- router ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2015ms
ping -I wlan0 -c 3 router
PING router (192.168.0.1) from 192.168.0.12 wlan0: 56(84) bytes of data.
--- router ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2014ms
Let me know if you need more info.
Thank you in advance.
