Thread: Cannot connect to one particular network on one particular machine using Ubuntu

hello,

i'm experiencing strange issue: on one laptop cannot connect one particular network, only on ubuntu. however, can connect other networks on machine, can connect without problems particular network on same computer using windows, , can connect network using machine ubuntu.

correct: can connect network (i.e. tray icon shows connected 2 out of 3 bars lighted), request times out. firefox (and other browsers) show time-out message, pinging 8.8.8.8 times out, pinging router (192.167.1.1) times out, pinging myself (192.167.1.103) works though.

got suggestions?

more information:

• tried setting dns server 8.8.8.8, didn't solve issue.
• tried manually setting ip address etc. in settings network (instead of using dhcp), didn't help.
• tried disabling ipv6, doesn't seem work.
• removed network , added again, checked , double-checked password, etc.
• rebooted router, checked settings, etc.
• i've been attempting connect network more week, has never worked.
• again, i can connect fine network using windows on same machine.
• and, i can connect network using ubuntu 12.04 laptop, , android phone too.

information machine:

brand/type: acer aspire timeline 3810t

ubuntu version: 12.04 lts

code:

$ uname -a linux my-laptop 3.2.0-26-generic-pae #41-ubuntu smp thu jun 14 16:45:14 utc 2012 i686 i686 i386 gnu/linux

code:

$ sudo lspci -v -s 01:00.0 01:00.0 network controller: intel corporation wifi link 5100 	subsystem: intel corporation wifi link 5100 agn 	flags: bus master, fast devsel, latency 0, irq 44 	memory @ e3500000 (64-bit, non-prefetchable) [size=8k] 	capabilities: [c8] power management version 3 	capabilities: [d0] msi: enable+ count=1/1 maskable- 64bit+ 	capabilities: [e0] express endpoint, msi 00 	capabilities: [100] advanced error reporting 	capabilities: [140] device serial number 00-22-fb-ff-ff-5d-04-26 	kernel driver in use: iwlwifi 	kernel modules: iwlwifi

code:

$ ifconfig wlan0 wlan0     link encap:ethernet  hwaddr 00:22:fb:5d:04:26             inet addr:192.167.1.103  bcast:192.167.1.255  mask:255.255.255.0           inet6 addr: fe80::222:fbff:fe5d:426/64 scope:link           broadcast running multicast  mtu:1500  metric:1           rx packets:303 errors:0 dropped:0 overruns:0 frame:0           tx packets:399 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            rx bytes:105876 (105.8 kb)  tx bytes:48996 (48.9 kb)

code:

$ iwconfig wlan0 wlan0     ieee 802.11abgn  essid:"[ssid of network i'm trying connect to]"             mode:managed  frequency:2.412 ghz  access point: 00:22:6b:86:de:65              bit rate=135 mb/s   tx-power=15 dbm              retry  long limit:7   rts thr:off   fragment thr:off           power management:on           link quality=64/70  signal level=-46 dbm             rx invalid nwid:0  rx invalid crypt:0  rx invalid frag:0           tx excessive retries:15  invalid misc:372   missed beacon:0

code:

$ ping -c 3 8.8.8.8 ping 8.8.8.8 (8.8.8.8) 56(84) bytes of data.  --- 8.8.8.8 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2016ms  $ ping -c 3 192.167.1.1 ping 192.167.1.1 (192.167.1.1) 56(84) bytes of data.  --- 192.167.1.1 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2015ms

code:

$ sudo lshw -c network   *-network                       description: wireless interface        product: wifi link 5100        vendor: intel corporation        physical id: 0        bus info: pci@0000:01:00.0        logical name: wlan0        version: 00        serial: 00:22:fb:5d:04:26        width: 64 bits        clock: 33mhz        capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-26-generic-pae firmware=8.83.5.1 build 33692 ip=192.167.1.103 latency=0 link=yes multicast=yes wireless=ieee 802.11abgn        resources: irq:44 memory:e3500000-e3501fff   *-network        description: ethernet interface        product: ar8131 gigabit ethernet        vendor: atheros communications inc.        physical id: 0        bus info: pci@0000:02:00.0        logical name: eth0        version: c0        serial: 00:1e:33:22:5e:33        capacity: 1gbit/s        width: 64 bits        clock: 33mhz        capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation        configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-napi firmware=n/a latency=0 link=no multicast=yes port=twisted pair        resources: irq:46 memory:e2500000-e253ffff ioport:1000(size=128)

the router cisco linksys wrt160n.

appreciated!

hi, please do:

code:

echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf  sudo modprobe -rfv iwlwifi  sudo modprobe -v iwlwifi

then:

code:

gksudo gedit /etc/pm/power.d/wireless

(this create or edit configuration file override default powermanagement behavior) , enter following:
#!/bin/sh

code:

/sbin/iwconfig wlan0 power off

above exit0, save gedit, close , reboot.

connect know? if not post output of:

code:

lspci -nnk | grep -ia2 net  iwconfig  rfkill list  lsmod  nm-tool

thanks

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