Wireless Help; dhcpcd & dhclient fail.

soupcan · 2008-12-26 21:41:19

I'm trying to set up my wireless connection according to the Arch Wiki, section "Wireless Quickstart". Everything seems to work fine until the step

# dhcpcd wlan0

. When I input that, my terminal outputs this:

[root@oxygen ~]# dhcpcd wlan0
wlan0: dhcpcd 4.0.7 starting
wlan0: broadcasting for a lease
wlan0: carrier lost
wlan0: carrier acquired
wlan0: broadcasting for a lease
wlan0: carrier lost
wlan0: carrier acquired
wlan0: broadcasting for a lease
wlan0: carrier lost
wlan0: carrier acquired
wlan0: broadcasting for a lease
wlan0: carrier lost
wlan0: carrier acquired
wlan0: broadcasting for a lease
wlan0: carrier lost
wlan0: carrier acquired
wlan0: broadcasting for a lease
wlan0: timed out

I've been trying to figure it out for about 4 hours now, and multiple google searches haven't yeilded anything. Any suggestions?

Last edited by soupcan (2008-12-26 23:42:25)

viga · 2008-12-26 21:45:51

do a iwlist scan

and see if you can see your network. If it does then you have a problem with your key what wireless card do you have?

soupcan · 2008-12-26 21:58:05

viga wrote:

do a iwlist scan
and see if you can see your network. If it does then you have a problem with your key what wireless card do you have?

Output of iwlist wlan0 scan:

[root@oxygen ~]# iwlist wlan0 scan
wlan0     Scan completed :
          Cell 01 - Address: 00:16:01:D6:EF:65
                    ESSID:"Buffalo"
                    Mode:Master
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=94/100  Signal level:-35 dBm  Noise level=-127 dBm
                    Encryption key:on
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:tsf=0000000082212553
                    Extra: Last beacon: 1513ms ago

I believe that this is my card:

[root@oxygen ~]# lspci | grep -i net
02:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 01)

archlinuxsagi · 2008-12-26 22:24:20

try using dhclient. There are some quirks to use with dhcpcd

viga · 2008-12-26 22:28:29

Your card is working. Use netcfg to connect to the wireless network. Follow this link

http://wiki.archlinux.org/index.php/Network_Profiles

soupcan · 2008-12-26 22:50:41

viga wrote:

Your card is working. Use netcfg to connect to the wireless network. Follow this link
http://wiki.archlinux.org/index.php/Network_Profiles

Where do I put the file so netcfg can find it?
EDIT: Nevermind. I just saw that it goes in /etc/network.d.

Last edited by soupcan (2008-12-26 22:52:06)

soupcan · 2008-12-26 22:54:29

This is the output of netcgf wirelesstest:

[root@oxygen ~]# netcfg wirelesstest
:: wirelesstest up  - DHCP IP lease attempt failed                       [FAIL]

archlinuxsagi · 2008-12-26 22:56:17

Please see my post 3 post up.

soupcan · 2008-12-26 23:17:50

archlinuxsagi wrote:

Please see my post 3 post up.

Sorry, same thing. Output of dhclient wlan0:

[root@oxygen ~]# dhclient wlan0
There is already a pid file /var/run/dhclient.pid with pid 5745
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

wmaster0: unknown hardware address type 801
wmaster0: unknown hardware address type 801
Listening on LPF/wlan0/00:21:5c:12:72:df
Sending on   LPF/wlan0/00:21:5c:12:72:df
Sending on   Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 17
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

archlinuxsagi · 2008-12-26 23:28:46

Mmm. Try to restart your router..

soupcan · 2008-12-26 23:41:19

archlinuxsagi wrote:

Mmm. Try to restart your router..

Same thing, with both dhcpcd and dhclient.

archlinuxsagi · 2008-12-27 00:02:43

mmm. There are some quirks for your wireless card out there. More experience arch users can help you here. I can suggest using wicd-client but to me netcfg2 should work too.

soupcan · 2008-12-27 00:30:54

I'm thinking that I might have a problem with the router itself. I have a Wii, should I try to connect to the internet with that and see what happens? I'd assume that this would reveal whether the problem was with my card or my router.

fwojciec · 2008-12-27 00:37:14

DHCP request will fail if authentication was not done successfully... Are you sure that your computer identifies itself correctly to the router? Post all relevant info -- what's in your wpa_supplicant.conf or however it is that you have your wifi configured. My guess is that dhcpcd/dhclient failure is a consequence of something that's misconfigured elsewhere.

soupcan · 2008-12-27 01:32:54

fwojciec wrote:

DHCP request will fail if authentication was not done successfully... Are you sure that your computer identifies itself correctly to the router? Post all relevant info -- what's in your wpa_supplicant.conf or however it is that you have your wifi configured. My guess is that dhcpcd/dhclient failure is a consequence of something that's misconfigured elsewhere.

Ummm.. could you be a little more specific? I haven't done anything but what's outlined in the Wireless Article and Beginners Guide, and what's been posted in this thread. I'm not really sure what files I need to post. I can boot into Ubuntu where I'm not having problems with wireless. Are there any settings I can post from there that would help?

fwojciec · 2008-12-27 01:45:34

The "Wireless Quickstart" you referred to in the first post describes the procedure for a WEP protected network, your network is using WPA encryption, from what I can tell, so those instructions are not what should be used in your case.

The problem is that other than dhcpcd/dhclient command you didn't tell us what it is that you do in order to connect to the wifi network. Are you using wpa_supplicant, netcfg -- what are the steps that you do before issuing the dhcpcd/dhclient command?

Last edited by fwojciec (2008-12-27 01:46:46)

soupcan · 2008-12-27 01:53:33

fwojciec wrote:

The "Wireless Quickstart" you referred to in the first post describes the procedure for a WEP protected network, your network is using WPA encryption, from what I can tell, so those instructions are not what should be used in your case.
The problem is that other than dhcpcd/dhclient command you didn't tell us what it is that you do in order to connect to the wifi network. Are you using wpa_supplicant, netcfg -- what are the steps that you do before issuing the dhcpcd/dhclient command?

Oh, ok. I was using the steps in the Wireless Quickstart guide. Like this:

# lspci | grep -i net
# iwconfig
# ifconfig wlan0 up
# iwlist wlan0 scan
# iwconfig wlan0 essid "Buffalo" key blahblahblah
# dhcpcd wlan0 or #dhclient wlan0

Is that why I was having problems? How should I set up my network then?

fwojciec · 2008-12-27 02:08:19

Right, these instructions would work for a WEP encrypted network, but the wifi network you're trying to connect to uses WPA encryption.

The generic procedure for WPA networks is to use wpa_supplicant to negotiate the encryption and then dhcpcd/dhclient to obtain an ip address. Wiki page for wpa_supplicant is here: http://wiki.archlinux.org/index.php/Wpa_supplicant

The best bet for you is to use something like netcfg to semi-automate the configuration -- that way you won't have to configure wpa_supplicant.conf manually/directly (though configuring it directly can be advantageous is many ways). You'd need to customize the wpa.example file from /etc/network.d/examples. Netcfg wiki is here: http://wiki.archlinux.org/index.php/Netcfg

Last edited by fwojciec (2008-12-27 02:08:44)

soupcan · 2008-12-27 02:31:00

fwojciec wrote:

Right, these instructions would work for a WEP encrypted network, but the wifi network you're trying to connect to uses WPA encryption.
The generic procedure for WPA networks is to use wpa_supplicant to negotiate the encryption and then dhcpcd/dhclient to obtain an ip address. Wiki page for wpa_supplicant is here: http://wiki.archlinux.org/index.php/Wpa_supplicant
The best bet for you is to use something like netcfg to semi-automate the configuration -- that way you won't have to configure wpa_supplicant.conf manually/directly (though configuring it directly can be advantageous is many ways). You'd need to customize the wpa.example file from /etc/network.d/examples. Netcfg wiki is here: http://wiki.archlinux.org/index.php/Netcfg

Okay, my wireless is now working though wpa_supplicant. Thank you so much.:) I've spent the entire day trying to get a wireless connection.
Anyway, I see that the netcfg wiki has a "Start On Boot" section, but I don't really understand what I have to do to get my wireless to work every time I boot up.

Last edited by soupcan (2008-12-27 02:31:53)

fwojciec · 2008-12-27 02:37:48

If I remember correctly... you need something like
NETWORKS=(auto-wireless wlan0)
in rc.conf and then "net-auto" deamon specified in the daemons array in rc.conf.

archlinuxsagi · 2008-12-27 03:45:58

Good for you that you have resolve the wireless issue. I forget that if there is no DHCP offer, it might be due to authentication failure.

viga · 2008-12-27 15:18:45

soupcan

to start your wireless you type sudo netcfg "wirelesstest" the name of the file you placed in /etc/netconf.d Also look at the /etc/netconf.d/examples

R00KIE · 2008-12-27 15:45:08

I would recommend using wicd unless you really want/need to use cli apps. wicd does the trick for me and also helped other people that asked for help here on the forum.

Arch Linux

#1 2008-12-26 21:41:19

Wireless Help; dhcpcd & dhclient fail.

#2 2008-12-26 21:45:51

Re: Wireless Help; dhcpcd & dhclient fail.

#3 2008-12-26 21:58:05

Re: Wireless Help; dhcpcd & dhclient fail.

#4 2008-12-26 22:24:20

Re: Wireless Help; dhcpcd & dhclient fail.

#5 2008-12-26 22:28:29

Re: Wireless Help; dhcpcd & dhclient fail.

#6 2008-12-26 22:50:41

Re: Wireless Help; dhcpcd & dhclient fail.

#7 2008-12-26 22:54:29

Re: Wireless Help; dhcpcd & dhclient fail.

#8 2008-12-26 22:56:17

Re: Wireless Help; dhcpcd & dhclient fail.

#9 2008-12-26 23:17:50

Re: Wireless Help; dhcpcd & dhclient fail.

#10 2008-12-26 23:28:46

Re: Wireless Help; dhcpcd & dhclient fail.

#11 2008-12-26 23:41:19

Re: Wireless Help; dhcpcd & dhclient fail.

#12 2008-12-27 00:02:43

Re: Wireless Help; dhcpcd & dhclient fail.

#13 2008-12-27 00:30:54

Re: Wireless Help; dhcpcd & dhclient fail.

#14 2008-12-27 00:37:14

Re: Wireless Help; dhcpcd & dhclient fail.

#15 2008-12-27 01:32:54

Re: Wireless Help; dhcpcd & dhclient fail.

#16 2008-12-27 01:45:34

Re: Wireless Help; dhcpcd & dhclient fail.

#17 2008-12-27 01:53:33

Re: Wireless Help; dhcpcd & dhclient fail.

#18 2008-12-27 02:08:19

Re: Wireless Help; dhcpcd & dhclient fail.

#19 2008-12-27 02:31:00

Re: Wireless Help; dhcpcd & dhclient fail.

#20 2008-12-27 02:37:48

Re: Wireless Help; dhcpcd & dhclient fail.

#21 2008-12-27 03:45:58

Re: Wireless Help; dhcpcd & dhclient fail.

#22 2008-12-27 15:18:45

Re: Wireless Help; dhcpcd & dhclient fail.

#23 2008-12-27 15:45:08

Re: Wireless Help; dhcpcd & dhclient fail.

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