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Can't start enp2s0(dhcpcd waiting for carrier error)[SOLVED]

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Jaglover
Watchman

Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana

Posted: Sat Jun 29, 2013 9:19 pm Post subject:

Alright, are you saying ethtool in Sabayon and Ubuntu tells the link is down and there actually is a functional connection? _________________ My Gentoo installation notes. Please learn how to denote units correctly!

rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sat Jun 29, 2013 9:25 pm Post subject:

Jaglover wrote:

Alright, are you saying ethtool in Sabayon and Ubuntu tells the link is down and there actually is a functional connection?

Yes, it works flawlessly. I'm even accessing the forums throught Sabayon and Xubuntu LiveUSB this days. I don't understand about such a technical aspects, but maybe there are some bug somewhere and even with this bug internet connection works. Maybe a hidden developer workaround in the ath9k driver.
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TomWij
Retired Dev

Joined: 04 Jul 2012
Posts: 1553

Posted: Sat Jun 29, 2013 9:35 pm Post subject:

NFS has nothing to do with this. For nm-applet, you need to start the NetworkManager service first for it to work. For wicd, it somehow still can't contact dbus, odd.

dmpogo
Advocate

Joined: 02 Sep 2004
Posts: 3266
Location: Canada

Posted: Sat Jun 29, 2013 9:54 pm Post subject:

rudregues wrote:

Jaglover wrote:

Alright, are you saying ethtool in Sabayon and Ubuntu tells the link is down and there actually is a functional connection?

You sure you are not using some wireless under Sabayon/Ubuntu at the same time ? What does your /sbin/ifconfig shows under these systems ?

rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sat Jun 29, 2013 11:50 pm Post subject:

TomWij wrote:

NFS has nothing to do with this. For nm-applet, you need to start the NetworkManager service first for it to work. For wicd, it somehow still can't contact dbus, odd.

I added the service and now I'm able to start nm-applet, but...

Code:

$ nm-applet
** Message: applet now removed from the notification area
** Message: applet now embedded in the notification area

The applet appears near notification area, as expected and it even recognize wireless networks around here. But when I click to connect to one of them I get an error notification:
"Failed to add/activate connection: (32)
Insufficient privileges."

And in the terminal which I started the program it shows a similar error:

Code:

** (nm-applet:2081): WARNING **: Failed to add/activate connection: (32)
Insufficient privileges.

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rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sun Jun 30, 2013 12:19 am Post subject:

dmpogo wrote:

You sure you are not using some wireless under Sabayon/Ubuntu at the same time ? What does your /sbin/ifconfig shows under these systems ?

No, I'm not using the wireless network to Sabayon and Xubuntu at the same time. If I want to run a command in Xubuntu, I need to shut down my notebook and insert my pen drive with Xubuntu. For Sabayon, I just reboot the notebook, since it is installed. Gentoo is the same, I just reboot and run the command.

Here, the output of ifconfig from Sabayon:

Code:

eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether b8:70:f4:2d:2e:3c 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

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 4 bytes 240 (240.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4 bytes 240 (240.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.101 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::1e65:9dff:feff:cf72 prefixlen 64 scopeid 0x20<link>
ether 1c:65:9d:ff:cf:72 txqueuelen 1000 (Ethernet)
RX packets 6248 bytes 6664498 (6.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4289 bytes 812690 (793.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

And here, the output of ifconfig from Xubuntu:

Code:

eth0 Link encap:Ethernet Endereço de HW b8:70:f4:2d:2e:3c
UP BROADCAST MULTICAST MTU:1500 Métrica:1
pacotes RX:0 erros:0 descartados:0 excesso:0 quadro:0
Pacotes TX:0 erros:0 descartados:0 excesso:0 portadora:0
colisões:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
IRQ:41

lo Link encap:Loopback Local
inet end.: 127.0.0.1 Masc:255.0.0.0
endereço inet6: ::1/128 Escopo:Máquina
UP LOOPBACK RUNNING MTU:16436 Métrica:1
pacotes RX:116 erros:0 descartados:0 excesso:0 quadro:0
Pacotes TX:116 erros:0 descartados:0 excesso:0 portadora:0
colisões:0 txqueuelen:0
RX bytes:11515 (11.5 KB) TX bytes:11515 (11.5 KB)

wlan0 Link encap:Ethernet Endereço de HW 1c:65:9d:ff:cf:72
inet end.: 192.168.1.101 Bcast:192.168.1.255 Masc:255.255.255.0
endereço inet6: fe80::1e65:9dff:feff:cf72/64 Escopo:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1
pacotes RX:2631 erros:0 descartados:0 excesso:0 quadro:0
Pacotes TX:1899 erros:0 descartados:0 excesso:0 portadora:0
colisões:0 txqueuelen:1000
RX bytes:3102514 (3.1 MB) TX bytes:264208 (264.2 KB)

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Jaglover
Watchman

Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana

Posted: Sun Jun 30, 2013 12:52 am Post subject:

Everything indicates there is no layer 1 connection. _________________ My Gentoo installation notes. Please learn how to denote units correctly!

rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sun Jun 30, 2013 1:45 am Post subject:

Jaglover wrote:

Everything indicates there is no layer 1 connection.

I googled that term ("layer 1 connection") to search something but found nothing.

And what about the permissions with networkmanager, is there a way I can get access to connect through nm-applet?
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dmpogo
Advocate

Joined: 02 Sep 2004
Posts: 3266
Location: Canada

Posted: Sun Jun 30, 2013 5:06 am Post subject:

rudregues wrote:

dmpogo wrote:

You sure you are not using some wireless under Sabayon/Ubuntu at the same time ? What does your /sbin/ifconfig shows under these systems ?

Code:

And here, the output of ifconfig from Xubuntu:

Code:

That exactly says in both outputs that it is wireless connection (wlan0) that is active, having aquired 192.168.1.101 IP number. Wired, eth0, connection is not active. I strongly suspect your wireless device name under gentoo is wlp3s0 while enp2s0 is the wired one. (Ah, pleasures of the new naming scheme). Do you even have ethernet cable plugged in ?

TomWij
Retired Dev

Joined: 04 Jul 2012
Posts: 1553

Posted: Sun Jun 30, 2013 7:41 am Post subject:

rudregues wrote:

You can add your user to the netdev group or follow the rest of the instructions at http://awesome.naquadah.org/wiki/Nm-applet; but for just trying, you could also just try to start nm-applet as root.

rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sun Jun 30, 2013 4:26 pm Post subject:

dmpogo wrote:

dmpogo, you are correct, my wireless card under Gentoo is wlp3s0 and my network card is enp2s0. In Gentoo, during each network configuration step I used that names. I don't have cable, I'm using a wireless nework (it's a laptop).
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rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sun Jun 30, 2013 4:59 pm Post subject:

TomWij wrote:

rudregues wrote:

Using nm-applet like root I can click without the previous permission error, but it loads, loads, start to load again and doesn't connect. Trying to add my user to netdev group failed too, because the system says "there's no netdev group"
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dmpogo
Advocate

Joined: 02 Sep 2004
Posts: 3266
Location: Canada

Posted: Sun Jun 30, 2013 5:14 pm Post subject:

rudregues wrote:

dmpogo wrote:

Well, your original error

Code:

* No configuration specified; defaulting to DHCP
dhcpcd[2849]: version 5.6.4 starting
dhcpcd[2849]: enp2s0: waiting for carrier
dhcpcd[2849]: timed out
dhcpcd[2849]: allowing 8 seconds for IPv4LL timeout
dhcpcd[2849]: timed out
* ERROR: net.enp2s0 failed to start

is an attempt to bring WIRED interface up, which of course fails since it is not connect by the cable (but you know, laptop still usually have ethernet port

).
Try /etc/init.d/net.wlp3s0 start instead, after changin the config to

Code:

# Prefer wpa_supplicant over wireless-tools
modules="wpa_supplicant"

# It's important that we tell wpa_supplicant which driver we should
# be using as it's not very good at guessing yet
wpa_supplicant_wlp3s0="-Dmadwifi"

# desativando o carrier (seja la o que isso for...)
#dhcpcd_wlp3s0="-K"

config_wlp3s0="192.168.0.2 netmask 255.255.255.0 brd 192.168.0.255"
routes_wlp3s0="default via 192.168.0.1"

TomWij
Retired Dev

Joined: 04 Jul 2012
Posts: 1553

Posted: Sun Jun 30, 2013 7:16 pm Post subject:

As I said earlier, that config is likely to be wrong; I think it needs to be corrected.

rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sun Jun 30, 2013 7:29 pm Post subject: Re: I can't start enp2s0 (dhcpcd waiting for carrier error)

From my first post:

rudregues wrote:

When I boot the system, use /etc/init.d/net.enp2s0 start or dhcpcd enp2s0 commands, I've that error:

Code:

my modules for networking are loaded:

Code:

$ lsmod
Module Size Used by
synaptics_usb 5064 0
ath9k 88825 0
ath9k_common 1880 1 ath9k
ath9k_hw 339810 2 ath9k_common,ath9k
atl1c 33401 0
ath 14953 3 ath9k_common,ath9k,ath9k_hw
radeon 878271 1
i2c_algo_bit 5079 1 radeon
drm_kms_helper 27186 1 radeon
ttm 59768 1 radeon
drm 217396 3 ttm,drm_kms_helper,radeon
agpgart 26195 2 drm,ttm

I created symbolic links to the devices (after delete net.eth0 symlink of course)

Code:

$ ls -la /etc/init.d/
lrwxrwxrwx 1 root root 6 May 24 13:22 net.enp2s0 -> net.lo
lrwxrwxrwx 1 root root 6 Jun 28 02:38 net.wlp3s0 -> net.lo

I've tried the net-setup command, but it doesn't exists in my gentoo installation...

Anything wrong? I was following the handbook, yes??? No!!!
Reason: when I created the symlink to net.lo I did this way:

Code:

# cd /etc/init.d
# ln -s net.lo net.wlp3s0
# ln -s net.lo net.enp2s0

The handbook method's is by putting the complete path:

Code:

# ln -s /etc/init.d/net.lo /etc/init.d/net.enp2s0
# ln -s /etc/init.d/net.lo /etc/init.d/net.wlp3s0

I don't know why, but this way internet works. If anyone has any idea why my Gentoo is interpreting these two method's differently please tell us! Now I removed wicd and nm-applet and the sucking dependencies :wink:

Obs.1:
I think what happens in the boot is:
1) A config file for enp2s0 is searched for cable net
2) If I don't have, it tries to use dhcpcd to find any usable configuration
3) I don't have any cable inserted in my notebook, so I get the initial carrier error

Obs.2:
My /etc/conf.d/net file is like the handbook now

Code:

the last line really asks for my net cable device/interface (enp2s0), so I think enp2s0 is for haldle internet connections in general, and not just cabled ones

Thank you very much for all of you, if there wasn't people helping me I would loose motivation to solve this problem

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rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Sun Jun 30, 2013 7:32 pm Post subject:

I can't edit first post subject by putting [Solve] because there's no space. Is there any graphical mark or other way to do that (maybe just change thread title?) _________________ Emerging en gentoo

dmpogo
Advocate

Joined: 02 Sep 2004
Posts: 3266
Location: Canada

Posted: Sun Jun 30, 2013 10:47 pm Post subject: Re: I can't start enp2s0 (dhcpcd waiting for carrier error)

rudregues wrote:

The handbook method's is by putting the complete path:

Code:

# ln -s /etc/init.d/net.lo /etc/init.d/net.enp2s0
# ln -s /etc/init.d/net.lo /etc/init.d/net.wlp3s0

It works because you are bringing up two interfaces, first wired then wireless. Wired falis since it is not connected, wireless works

Quote:

Correct

Quote:

Obs.2:
My /etc/conf.d/net file is like the handbook now

Code:

the last line really asks for my net cable device/interface (enp2s0), so I think enp2s0 is for haldle internet connections in general, and not just cabled ones

No, there is nothing general in enp2s0, it is a name of a specific wired interface. The line wpa_supplicant_enp2s0="-Dmadwifi" says that when wpa_suppicant is called for
interface enp2s0, then the option -Dmadwifi will be passed to it. First of all, there is no point in using wpa_supplicant for wired interface, second, as it stands the line
is ignored when wpa_supplicant is used for wireless interface.

On a laptop you would like to emerge ifplugd or equivalent, and eliminate net.enp2s0 from start up so that /etc/init.d/net.enp2s0 is not called when laptop is booted.

rudregues
Apprentice

Joined: 29 Jan 2013
Posts: 231
Location: Brazil

Posted: Mon Jul 01, 2013 7:51 pm Post subject: Re: I can't start enp2s0 (dhcpcd waiting for carrier error)

dmpogo wrote:

But if I put wpa_supplicant_wlp3s0="-Dmadwifi" the net.wlp3s0 not even starts, otherwise with wpa_supplicant_enp2s0="-Dmadwifi" it not just starts, but internet works. Crazy things man!
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dmpogo
Advocate

Joined: 02 Sep 2004
Posts: 3266
Location: Canada

Posted: Mon Jul 01, 2013 10:00 pm Post subject: Re: I can't start enp2s0 (dhcpcd waiting for carrier error)

rudregues wrote:

dmpogo wrote:

But if I put wpa_supplicant_wlp3s0="-Dmadwifi" the net.wlp3s0 not even starts, otherwise with wpa_supplicant_enp2s0="-Dmadwifi" it not just starts, but internet works. Crazy things man!

Nothing crazy, that means that Dmadwifi is the wrong option for your network card, and if it is not set, wpa_supplicant_wlp3s0 is called without it, and everything works

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