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lonewolf28
n00b
n00b


Joined: 03 Dec 2015
Posts: 1
Location: Canada

PostPosted: Sat Dec 12, 2015 11:30 pm    Post subject: RE: Problem with WIFI Reply with quote

Hi Everybody,

I'm new to Gentoo and i have a problem with my wifi.
First i forgot to load the module for the wifi and later i recompiled the kernel to include the module.
However, even after recompiling the kernel with the module i can't get it to work.
Right now when i run iwconfig the interface is not detected as a wireless interface i'm not sure why.

Code:

iwconfig
sit0      no wireless extensions.

lo        no wireless extensions.

enp5s0    no wireless extensions.

wlp4s0    no wireless extensions.


The wlp4s0 is a wireless interface btw.

Code:

 ifconfig wlp4s0
wlp4s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 00:1b:77:e2:75:94  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


Code:

lsmod
Module                  Size  Used by
iwl3945                50233  0
iwlegacy               42557  1 iwl3945


Code:

dmesg | grep iwl3945
[    4.257061] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:s
[    4.257066] iwl3945: Copyright(c) 2003-2011 Intel Corporation
[    4.257129] iwl3945 0000:04:00.0: can't disable ASPM; OS doesn't have ASPM control
[    4.257147] iwl3945 0000:04:00.0: enabling device (0000 -> 0002)
[    4.311620] iwl3945 0000:04:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[    4.311626] iwl3945 0000:04:00.0: Detected Intel Wireless WiFi Link 3945ABG
[    4.319129] iwl3945 0000:04:00.0 wlp4s0: renamed from wlan0
[    8.736297] iwl3945 0000:04:00.0: loaded firmware version 15.32.2.9


I used this link to enable the module in the kernel.https://wiki.gentoo.org/wiki/Intel_Corporation_PRO/Wireless_3945ABG

Can anyone help me with this ?

Thank you for your time.
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khayyam
Watchman
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Joined: 07 Jun 2012
Posts: 6228
Location: Room 101

PostPosted: Sat Dec 12, 2015 11:58 pm    Post subject: Re: RE: Problem with WIFI Reply with quote

lonewolf28 wrote:
Can anyone help me with this?

lonewolf28 ... for iwconfig (or any of the tools from net-wireless/wireless-tools) to work you must have CONFIG_CFG80211_WEXT enabled in the kernel. This is because wireless-tools uses the now depreciated WEXT, and so the WEXT compatibility layer must be enabled. Without this enabled iwconfig will show "no wireless extensions" for the wireless device ... I suspect this is what's happening in your case.

BTW, If you need a tool that supports NL80211 natively then use net-wireless/iw.

best ... khay
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szatox
Veteran
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Joined: 27 Aug 2013
Posts: 1717

PostPosted: Sun Dec 13, 2015 12:00 am    Post subject: Reply with quote

iwconfig uses legacy interface, wireless extensions, which is deprecated and often disabled in kernel config by default. You can enable it and rebuild kernel to get iwconfig back.
However, in most cases you will want to use wpa_supplicant instead, as it's currently the only way to use WPA and it also supports open networks and those with WEP (actually, those are open networks as well ;) )
A replacement for iwconfig is called "iw". It's also an option, but it's neither as powerful as wpa_supplicant nor as simple and convenient as iwconfig.
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