How to avoid 2min delay for direct ethernet cable setup?

[a5sk4s]

I am using a direct ethernet cable as a fallback option to be able to administer the RPi. There is no dhcp server, both sides have static ips.

The delay occurs, when there is no cable connected.

At the moment, I have the ip address for the RPi hardcoded at the end of /boot/cmdline.txt

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dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p6 rootfstype=ext4 elevator=deadline rootwait ip=192.168.2.2

When I remove it and use /etc/network/interfaces as follows

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auto wlan0

iface lo inet loopback

iface eth0 inet static
        address 192.168.2.2
        netmask 255.255.255.0
        gateway 192.168.2.1

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

iface default inet dhcp

the lo (loopback) interface disappears from ifconfig, and the postgresql server fails to start up as a result.

I can later correct the situation by manually invoking 'sudo ifup lo' and '/etc/init.d/postgresql start', but i would prefer not to - maybe other things failed as well.

What can I do to correct the situation?

[pluggy]

Remove anything you changed in the FAT partition

Adjust to suit

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auto lo

iface lo inet loopback

auto eth0
iface eth0 inet static
  address 192.168.1.246
  netmask 255.255.255.0
  network 192.168.1.0
  broadcast 192.168.1.255
  gateway 192.168.1.1

It fires up straight away cable or not, and if its started without, it just works when you plug it in.

[a5sk4s]

Remove anything you changed in the FAT partition

Not sure what to do with this statement. The rest worked like a charm. I assume that I was basically missing the 'auto lo'.

Thank you.

[DougieLawson]

if you add ip=xxx.xxx.xxx.xxx to /boot/cmdline.txt and the eth0 isn't wired to an active connection you WILL get the 120 second delay.

Two options to fix it
1. Connect a cable to a router/switch or laptop
2. Drop the ip= parm

[a5sk4s]

Yes, the following configuration in /etc/network/interfaces allowed me to do that (no need to plug in a cable to avoid the delay):

Code: Select all

auto wlan0
auto eth0
auto lo

iface lo inet loopback

iface eth0 inet static
	address 192.168.2.2
	netmask 255.255.255.0
	network 192.168.2.0

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

iface default inet dhcp