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Date: Tue, 21 Oct 2014 03:00:53 +0200
From: =?UTF-8?B?SmFuIEtva2Vtw7xsbGVy?= <jan.kokemueller@gmail.com>
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To: freebsd-x11@freebsd.org
Subject: Re: Radeon Caicos issue
References: <20141020221734.GK6490@blisses.org>
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Hi!

> When I load the
> firmware (via kldstat radeonkms) from the console after boot, the screen
> blinks and goes away like it does when loading from loader.conf, but the
> system is still running, so I'm able to collect some stats via ssh.

Can you try "kern.vty=vt" in your /boot/loader.conf? This enables the 
new console subsystem which should play nice with the KMS drivers :)

More information about vt:
https://wiki.freebsd.org/Newcons