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I have a 14.04 Ubuntu Desktop installation on a MacMini running headless in my closet. When I boot the server, it will not assign itself an IP address until I login to a user session. This means anytime I reboot, the machine is not accessible via the network until I attach a monitor and login.

I am pinging the IP address of the server from my laptop on the same network and getting nothing until I login.

Am I missing something here? I feel like this is an easy/obvious fix but I am missing it.

Thanks in advance.

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  • I added auto eth0 and iface eth0 inet dhcp lines to my /etc/network/interfaces file and rebooted, the issue still occurs.
    – Erik
    Aug 1, 2014 at 18:30

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I believe I have the answer.

The MacMini will not boot unless it detects a monitor attached. There is no way around this at the BIOS level since there is no BIOS.

The SOLUTION? Plug in a DVI(male)-VGA(female) converter where you short out a few VGA pins using 100ohm resistors.

Source: http://imaginaryrobots.wordpress.com/2013/07/10/headless-mac-mini-hardware-hack/

Exact pin-out diagram Showing the converter with resistors
(source: nickoneill.name)

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