Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
ifconfig not showing my networks
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Networking & Security
View previous topic :: View next topic  
Author Message
prakhar
n00b
n00b


Joined: 20 Sep 2014
Posts: 4
Location: Mohali, Punjab, India

PostPosted: Sat Sep 27, 2014 6:02 am    Post subject: ifconfig not showing my networks Reply with quote

Hello everyone,

I just completed the installation of my Gentoo system. When I rebooted to my kernel, I was shocked to see my interfaces were not there. The only interface it shows is lo interface. I executed these commands for my interfaces:-

$ cd /etc/init.d
$ ln -s net.lo net.enp8s0
$ ln -s net.lo net.wlp2s0
$ rc-update add net.enp8s0 default
$ rc-update add net.wlp2s0 default

I also tried to do

$ service net.enp8s0 start

But, it fails with error:

ERROR: interface enp8s0 does not exists
Ensure that you have loaded the correct kernel module for your hardware
ERROR: net.enp8s0 failed to start

They were working just fine when I was working on livecd.

Please help.
_________________
Just another linux user
Back to top
View user's profile Send private message
charles17
Advocate
Advocate


Joined: 02 Mar 2008
Posts: 2583

PostPosted: Sat Sep 27, 2014 6:54 am    Post subject: Reply with quote

Are you having the drivers correctly installed?
https://wiki.gentoo.org/wiki/Ethernet might help.

If you installed them as modules check with lsmod
Also, https://wiki.gentoo.org/wiki/Network_management_using_DHCPCD will show you a much easier setup for network.
Back to top
View user's profile Send private message
Roman_Gruber
Advocate
Advocate


Joined: 03 Oct 2006
Posts: 3806
Location: Austro Bavaria

PostPosted: Sat Sep 27, 2014 10:35 am    Post subject: Reply with quote

well.

this is mostly a kernel related issue.

post your kenrel version here and than post to a pastebin your full kernel config and post the link than here.

also check the gentoo wiki / handbook about configuring the kernel regarding network.

also run lspci on a livecd, write all down, those codes xxxx:xxxx or using lsmod can be used to find the needed modules

lsmod should return you on a livecd which modules are loaded, but you are better of using lspci and google for those xxxx:xxxx codes to see what you need in your kernel

and also => ifconfig -a <= reveals all when you have a proper configured kernel.

also lshw could be helpful on a working installation
Back to top
View user's profile Send private message
Roman_Gruber
Advocate
Advocate


Joined: 03 Oct 2006
Posts: 3806
Location: Austro Bavaria

PostPosted: Sat Sep 27, 2014 10:36 am    Post subject: Reply with quote

output of

lspci

ifconfig -a

lsmod


if you want old network names, or let it called the regular ones like eth0 and so on...

Code:
menuentry ' 3.10.40-gentoo_2014_05_18' --class gento --class gnu-linux --class gnu --class os {
 linux /3.10.40-gentoo_2014_05_18 init=linuxrc ramdisk=8192 crypt_root=dev/mapper/vg_root_volume-lv_real_root realroot=/dev/mapper/lv_real_root dolvm net.ifnames=0
 initrd /initramfs-genkernel-x86_64-3.5.3-gentoo_Sept_2012
}


add net.ifnames=0 to your kernel. above it is a snipped of my grub.cfg so you can see where it belongs to.
Back to top
View user's profile Send private message
prakhar
n00b
n00b


Joined: 20 Sep 2014
Posts: 4
Location: Mohali, Punjab, India

PostPosted: Sun Sep 28, 2014 6:09 am    Post subject: Reply with quote

Actually, I wasn't sure what features to enable while I was configuring my kernel. I followed Gentoo Handbook and enabled all features it quoted out and nothing more. Never thought I need to enable my NICs explicitly.

My Ethernet card was Realtek RTL 8101E/8102E PCI Fast Express, for which (after googling) I found that RTL8169 may do the job.

My wifi card is Intel Pro Wireless 3945ABG, for which I needed to enable iwl3945 driver.

I enabled both of them, recompiled my kernel, and now I have both of my cards working. Thanks @charles17 for letting me know about enabling my net drivers explicitly. By the way, I am using kernel 3.14.14. Having a problem with udev and X11 now, thinking about starting a new thread.
_________________
Just another linux user
Back to top
View user's profile Send private message
Roman_Gruber
Advocate
Advocate


Joined: 03 Oct 2006
Posts: 3806
Location: Austro Bavaria

PostPosted: Sun Sep 28, 2014 9:52 am    Post subject: Reply with quote

gentoo need some special flags and hterefore gentoo sources are recommended.

for udev there is also a guide around.

same for x11 and how to configure, its the same procedure. figure out what you have and than search for guides what to enalbe / build
Back to top
View user's profile Send private message
Hu
Moderator
Moderator


Joined: 06 Mar 2007
Posts: 13509

PostPosted: Sun Sep 28, 2014 3:50 pm    Post subject: Reply with quote

tw04l124 wrote:
gentoo need some special flags and hterefore gentoo sources are recommended.
Although gentoo-sources is recommended if you want support from the Gentoo developers, you can easily run a vanilla-sources kernel without patches.
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Networking & Security All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum