Arch Linux

Carfax

Member

Registered: 2013-10-30

Posts: 30

Problem with dhcpcd/wireless

Hello
This is my first post so please pardon me if i'm not doing anything right.

For several weeks now, i haven't been able to browse on my laptop with a wireless network connection.(Eth and Mobile broadband work fine) Initially, i assumed the problem was with NetworkManager as i had just updated it, but after much troubleshooting i consulted a friend who suggested that it might be a problem with dhcpcd, and asked me to release it. i tried it and it worked, but immediately after rebooting the laptop. it reverted back to the old problem. I wasn't bothered at first even though i couldn't figure out why dhcpcd was still associating a lease from another AP with the current AP i was trying to connect to (My networking knowledge isn't anything i could brag about). But with time the situation has worsened somehow...it now takes about 20 - 50 attempts to release dhcpcd before the wireless network connects. I've scoured my logs and i can't really find any message relating to it, and my dhcpcd status shows active....

I'm really out of ideas on how to fix this, and it's really beginning to frustrate me since wireless network connections are my only options at the best of times. I'd really appreciate any aid whatsoever.

Thanks in advance

Linux carfax 3.12.9-2-ARCH #1 SMP PREEMPT Fri Jan 31 10:22:54 CET 2014 x86_64 GNU/Linux  

my dhcpcd version

 dhcpcd 6.2.1
Copyright (c) 2006-2014 Roy Marples 

dmesg

 [ 2634.181507] wlp2s0: d4:ca:6d:21:43:91 denied association (code=12)
[ 2634.223441] wlp2s0: deauthenticating from 00:00:00:00:00:00 by local choice (reason=3)
[ 2634.223458] wlp2s0: deauthenticating from d4:ca:6d:21:43:91 by local choice (reason=3)
[ 2638.346099] wlp2s0: authenticate with 00:27:22:c4:07:6f
[ 2638.351372] wlp2s0: send auth to 00:27:22:c4:07:6f (try 1/3)
 

Last edited by Carfax (2014-02-14 17:37:40)

Raynman

Member

Registered: 2011-10-22

Posts: 1,539

Re: Problem with dhcpcd/wireless

and my dhcpcd status shows active....

What does this mean exactly?

Output of

# journalctl -b -u NetworkManager.service

might tell you a bit more (-b limits output to current boot).

torors

Member

Registered: 2012-09-28

Posts: 106

Re: Problem with dhcpcd/wireless

Have you disabeled dhcpcd? (systemctl diasable dhcpcd.service).

Check the output of systemctl status dhcpcd.

Carfax

Member

Registered: 2013-10-30

Posts: 30

Re: Problem with dhcpcd/wireless

and my dhcpcd status shows active....

What does this mean exactly?

Output of

# journalctl -b -u NetworkManager.service

might tell you a bit more (-b limits output to current boot).

I finally managed to connect today after several tries and fails so i'll post my status again... The Active point is now showing as "failed"
My dhcpcd status

  systemctl status dhcpcd.service

dhcpcd.service - dhcpcd on all interfaces
   Loaded: loaded (/usr/lib/systemd/system/dhcpcd.service; enabled)
   Active: failed (Result: exit-code) since Sat 2014-02-15 18:59:48 GMT; 19min ago
  Process: 2960 ExecStop=/usr/bin/dhcpcd -x (code=exited, status=1/FAILURE)
  Process: 247 ExecStart=/usr/bin/dhcpcd -q -b (code=exited, status=0/SUCCESS)
 Main PID: 255 (code=exited, status=1/FAILURE)
   CGroup: /system.slice/dhcpcd.service

Feb 15 18:59:41 carfax dhcpcd[255]: control command: /usr/bin/dhcpcd -B -K ...s0
Feb 15 18:59:46 carfax dhcpcd[255]: wlp2s0: leased 192.168.0.2 for 86400 seconds
Feb 15 18:59:46 carfax dhcpcd[255]: wlp2s0: adding route to 192.168.0.0/24
Feb 15 18:59:46 carfax dhcpcd[255]: wlp2s0: adding default route via 192.168.0.1
Feb 15 18:59:47 carfax dhcpcd[255]: received SIGTERM from PID 2169, stopping
Feb 15 18:59:47 carfax dhcpcd[255]: enp4s0: removing interface
Feb 15 18:59:47 carfax dhcpcd[255]: wlp2s0: removing interface
Feb 15 18:59:48 carfax systemd[1]: dhcpcd.service: main process exited, cod...RE
Feb 15 18:59:48 carfax systemd[1]: dhcpcd.service: control process exited, ...=1
Feb 15 18:59:48 carfax systemd[1]: Unit dhcpcd.service entered failed state.
Hint: Some lines were ellipsized, use -l to show in full.
 

Output of journalctl -b -u NetworkManager.service

Feb 15 18:56:36 carfax systemd[1]: Starting Network Manager...
Feb 15 18:56:38 carfax NetworkManager[248]: <info> NetworkManager (version 0.9.8.8) is starting...
Feb 15 18:56:38 carfax NetworkManager[248]: <info> Read config file /etc/NetworkManager/NetworkManager.conf
Feb 15 18:56:38 carfax NetworkManager[248]: <info> WEXT support is enabled
Feb 15 18:56:39 carfax NetworkManager[248]: <info> VPN: loaded org.freedesktop.NetworkManager.pptp
Feb 15 18:56:39 carfax NetworkManager[248]: <info> VPN: loaded org.freedesktop.NetworkManager.openvpn
Feb 15 18:56:39 carfax NetworkManager[248]: <info> Loaded plugin keyfile: (c) 2007 - 2010 Red Hat, Inc.  To report bugs please use the NetworkMan
Feb 15 18:56:39 carfax NetworkManager[248]: keyfile: parsing IP Vanish PPTP ...
Feb 15 18:56:39 carfax NetworkManager[248]: keyfile:     read connection 'IPVanish PPTP'
Feb 15 18:56:39 carfax NetworkManager[248]: keyfile: parsing Vodafone Default ...
Feb 15 18:56:39 carfax NetworkManager[248]: keyfile:     read connection 'Vodafone Default'
Feb 15 18:56:39 carfax NetworkManager[248]: keyfile: parsing BINOMAN@HOTSPOT ...
Feb 15 18:56:40 carfax NetworkManager[248]: keyfile:     read connection 'BINOMAN@HOTSPOT'
Feb 15 18:56:40 carfax NetworkManager[248]: keyfile: parsing KingsAir1 ...
Feb 15 18:56:40 carfax NetworkManager[248]: keyfile:     read connection 'KingsAir1'
Feb 15 18:56:40 carfax NetworkManager[248]: keyfile: parsing HOUSE ...
Feb 15 18:56:40 carfax NetworkManager[248]: keyfile:     read connection 'HOUSE'
Feb 15 18:56:40 carfax NetworkManager[248]: <info> monitoring kernel firmware directory '/lib/firmware'.
Feb 15 18:56:40 carfax NetworkManager[248]: <info> rfkill0: found WiFi radio killswitch (at /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:
Feb 15 18:56:40 carfax NetworkManager[248]: <info> rfkill3: found WiFi radio killswitch (at /sys/devices/pci0000:00/00
 

torors

Member

Registered: 2012-09-28

Posts: 106

Re: Problem with dhcpcd/wireless

I think you have enabeled dhcpcd. To use NetworkManager, dhcpcd must be disabeled.
Try to disable dhcpcd.service and restart your PC.

Raynman

Member

Registered: 2011-10-22

Posts: 1,539

Re: Problem with dhcpcd/wireless

I think you have enabeled dhcpcd. To use NetworkManager, dhcpcd must be disabeled.
Try to disable dhcpcd.service and restart your PC.

You can clearly see from the status that the dhcpcd service is enabled. But yes, dhcpcd.service should be disabled, NM takes care of running the dhcpcd program when you tell it to connect using DHCP. There should be no need to reboot, just stop dhcpcd.service and restart NetworkManager.service.

Last edited by Raynman (2014-02-16 21:08:07)

Carfax

Member

Registered: 2013-10-30

Posts: 30

Re: Problem with dhcpcd/wireless

I think you have enabeled dhcpcd. To use NetworkManager, dhcpcd must be disabeled.
Try to disable dhcpcd.service and restart your PC.

You can clearly see from the status that the dhcpcd service is enabled. But yes, dhcpcd.service should be disabled, NM takes care of running the dhcpcd program when you tell it to connect using DHCP. There should be no need to reboot, just stop dhcpcd.service and restart NetworkManager.service.

I tried that before but the problem just returns after a reboot.

Raynman

Member

Registered: 2011-10-22

Posts: 1,539

Re: Problem with dhcpcd/wireless

I think you have enabeled dhcpcd. To use NetworkManager, dhcpcd must be disabeled.
Try to disable dhcpcd.service and restart your PC.

You can clearly see from the status that the dhcpcd service is enabled. But yes, dhcpcd.service should be disabled, NM takes care of running the dhcpcd program when you tell it to connect using DHCP. There should be no need to reboot, just stop dhcpcd.service and restart NetworkManager.service.

I tried that before but the problem just returns after a reboot.

What are you referring to exactly? If you stop the service but leave it enabled, it will of course be started again during the next boot.

Last edited by Raynman (2014-02-17 23:41:20)

HungGarTiger

Member

From: nz/auckland/

Registered: 2012-06-27

Posts: 187

Re: Problem with dhcpcd/wireless

You can clearly see from the status that the dhcpcd service is enabled. But yes, dhcpcd.service should be disabled, NM takes care of running the dhcpcd program when you tell it to connect using DHCP. There should be no need to reboot, just stop dhcpcd.service and restart NetworkManager.service.

I tried that before but the problem just returns after a reboot.

What are you referring to exactly? If you stop the service but leave it enabled, it will of course be started again during the next boot.

Yup, Carfax I think you are mixing up the meaning of start/stop and enable/disable.

This will turn a service on/off for a session, once you reboot it will return to it's original state

systemctl start/stop foo.service

This will ensure a service is loaded (or not) from boot

systemctl enable/disable foo.service

In your case you want to make sure the dhcp service is not loaded every time you reboot

---

"No sympathy for the devil. If you buy the ticket, take the ride."
- Hunter S. Thompson

fdservices

Member

From: France

Registered: 2012-02-06

Posts: 413

Re: Problem with dhcpcd/wireless

Just to register an interest.

I have had issues with both NetworkManager and dhcpcd, neither of which seem to work well on either of my laptops at the moment.

Andrew

Carfax

Member

Registered: 2013-10-30

Posts: 30

Re: Problem with dhcpcd/wireless

I'm stating that disabling dhcpcd through

 systemctl disable dhcpcd.service

and restarting networking manager works fine allowed me to make a connection. And then when i restarted the laptop later it refused to make further connections, until i had re enabled dhcpcd and then gone through the process all over again