Arch Linux

joemc

Member

Registered: 2011-10-25

Posts: 4

Wireless network issue with only ONE router.

Hi i have been a happy user of arch on my laptop for about 6 months. My laptop's wireless card  connects to many routers including coffee shop, school, work, and friends homes. Now internet has been installed at my house and came with a wireless router  / cable modem / switch all in one device.  I have been trying to get this to work for days now.

Other devices connect to it fine, including another laptop, and several phones. My laptop connects to it fine using Windows 7.  Arch can also connect to the same device fine using a wired connection.

On Arch using wireless  it connects and dhcpcd will retrieve an IP address and fork to background like normal, but I cannot ping anyone on network, the router, or access the internet.

I have done the following steps:

1.  I thought it may have been the encryption so I disabled encryption on the router

2. I saw it was retrieving an ip address in the 10.0.0.* range and all the other networks I use are in the 192.168.*.* range so i changed router to use that block.

Fairly lost on what to do next, hard subject to search for because i find everything in the world except this issue.
Thanks for any help, unhappily stuck in Windows for now.

-Joe

Some device information.

Toshiba R705 laptop

SMCD3GNV router/modem

Last edited by joemc (2012-01-02 21:29:05)

/dev/zero

Member

From: Melbourne, Australia

Registered: 2011-10-20

Posts: 1,247

Re: Wireless network issue with only ONE router.

What kind of router is it and what kind of wireless card does your laptop have?

Edit: okay, you've added the router type ;-) Now what does the following give:

lspci -nnmvk

Last edited by /dev/zero (2012-01-02 21:32:50)

joemc

Member

Registered: 2011-10-25

Posts: 4

Re: Wireless network issue with only ONE router.

To be more clear I have renabled encryption since it did not seem to be the issue.

The full output from

lspci -nnmvk  

is available here : http://pastebin.com/8W0DsPgG

I think the relevant part is:

Device: 02:00.0
Class:  Network controller [0280]
Vendor: Intel Corporation [8086]
Device: Centrino Advanced-N + WiMAX 6250 [0087]
SVendor:        Intel Corporation [8086]
SDevice:        Centrino Advanced-N + WiMAX 6250 2x2 AGN [1301]
Rev:    5f
Driver: iwlagn
Module: iwlagn

Last edited by joemc (2012-01-02 21:46:34)

/dev/zero

Member

From: Melbourne, Australia

Registered: 2011-10-20

Posts: 1,247

Re: Wireless network issue with only ONE router.

Okay, when I look up your router, it only appears to support 802.11n connections, so I searched for the following terms:

"centrino Advanced-N + WiMAX 625" OR "iwlagn" 802.11n

and found this apparently relevant thread.

joemc

Member

Registered: 2011-10-25

Posts: 4

Re: Wireless network issue with only ONE router.

Defiantly relevant.   I will look around myself some more since N seems to have issues

my iwconfig shows N though and still have same issue, that file does not exist in arch, but i did run modprobe with the 11n_disable=0 flag

wlan0     IEEE 802.11abgn  ESSID:"HOME-34F8"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 78:CD:8E:0F:34:F8   
          Bit Rate=72.2 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-28 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Thanks though I have a new area to look around in.