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Raspberry Pi 3 Model B v 1.2 - No Network [SOLVED]
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Progman3K
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PostPosted: Fri Mar 11, 2022 8:45 pm    Post subject: Raspberry Pi 3 Model B v 1.2 - No Network [SOLVED] Reply with quote

Hi!

I followed the quick-guide
https://wiki.gentoo.org/wiki/Raspberry_Pi/Quick_Install_Guide

When choosing a stage, I selected
stage3-armv7a_hardfp-systemd-20220308T225141Z.tar.xz

I was able to perform all the steps up to the section titled
Post boot configuration

The board boots up, loads the kernel, performs its init and goes to the login prompt, where I can log in as root.

The only problem is that there is no network.

I'm fairly certain all the required drivers and kernel modules are present, but there is no eth0 nor enp3s0.

dmesg:
https://pastebin.com/3JmcLJUE

lsmod:
https://pastebin.com/EuCmRtSv

systemctl:
https://pastebin.com/KiunyE5w

I'm sure I must have omitted a step or maybe because I selected systemd, the guide does not list the step necessary for the network?

Thank you in advance for your help


Last edited by Progman3K on Fri Mar 18, 2022 2:23 pm; edited 1 time in total
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grknight
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Posts: 1935

PostPosted: Fri Mar 11, 2022 8:51 pm    Post subject: Re: Raspberry Pi 3 Model B v 1.2 - No Network Reply with quote

Progman3K wrote:
I'm fairly certain all the required drivers and kernel modules are present, but there is no eth0 nor enp3s0.


Where is your proof of this? The dmesg shows eth0. 'ip link' should show the same meaning it is ready and waiting if shown with ip, something just needs to configure it.
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Progman3K
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PostPosted: Fri Mar 11, 2022 9:23 pm    Post subject: Re: Raspberry Pi 3 Model B v 1.2 - No Network Reply with quote

grknight wrote:
Where is your proof of this? The dmesg shows eth0. 'ip link' should show the same meaning it is ready and waiting if shown with ip, something just needs to configure it.

Hey! You're right!

I was typing ifconfig with no parameters:
Quote:
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 1000 (Local Loopback)
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

Typing ifconfig eth0 displays
Quote:
eth0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether b8:27:eb:bd:85:aa 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

Typing ip link (which I've never used) displays
Quote:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether b8:27:eb:bd:85:aa brd ff:ff:ff:ff:ff:ff

So the network adapter IS active, but how do I get it to retrieve an IP?

I tried creating the file /etc/systemd/network/50-dhcp.network
Quote:
[Match]
Name=en*

[Network]
DHCP=yes

Then executed
Code:
systemctl enable systemd-networkd.service
systemctl start systemd-networkd.service

That didn't work.

I tried creating the file /etc/conf.d/net and set the contents to
Quote:
config_eth0="dhcp"

That didn't work either
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Phoenix591
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Posts: 493

PostPosted: Fri Mar 18, 2022 7:22 am    Post subject: Reply with quote

if you still havn't caught it,

Code:
[Match]
Name=en*

[Network]
DHCP=yes


needs to be

Code:
[Match]
Name=eth0

[Network]
DHCP=yes


for systemd-networkd to work (since your ethernet is showing as eth0, not enp whatever)

/etc/conf.d/net is a netifrc thing which is mostly openrc.
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Progman3K
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PostPosted: Fri Mar 18, 2022 2:22 pm    Post subject: Reply with quote

Hi Phoenix591!

Thanks for taking the time to help!

In fact, I ended up nuking the install because even after I managed to manually start the network, I couldn't sync the repos.
I was getting lots of strange errors trying to sync portage, and more investigation made me suspect that I had downloaded a corrupt stage3, or that I had possibly omitted a crucial flag when extracting it.

So I started over, and instead of using the stage3 mentioned in the pi quick-guide (stage3-armv7a_hardfp-20160325.tar.bz2), I went to the autobuilds folder and downloaded a recent stage3.

Also, instead of selecting a systemd stage3, I went with an rc stage3 instead, to try and deviate as little as possible from the guide's instructions.

This worked out and I was able to use the linux that was already distributed with the pi (along with an external sd-card reader), with the quicksetup guide AND the handbook, to perform an almost totally-by-the-handbook install.

I suppose we can consider this post solved, I will update its title.


All that being said though, originally, when I was targeting a systemd install, I followed the instructions given here:
https://wiki.gentoo.org/wiki/Systemd#Network

Which is the source of the error you detected.

I (of course) made a typo.

Again, thank you, Phoenix591!
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NeddySeagoon
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Joined: 05 Jul 2003
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PostPosted: Sat Mar 19, 2022 10:17 am    Post subject: Reply with quote

Moved from Installing Gentoo to Gentoo on ARM.

The Pis are all various ARM systems
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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