From owner-freebsd-hackers@FreeBSD.ORG  Sat Sep  6 19:57:42 2014
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From: Maxim V FIlimonov <che@bein.link>
To: freebsd-hackers@freebsd.org
Subject: What to do if USB stack seems dead
Date: Sat, 06 Sep 2014 23:57:37 +0400
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Lately, I've been heavily experimenting with different USB devices (for 
instance, USB to TTL one, but that's another story), and at a moment I 
encountered that the system doesn't react on new USB devices connected. The 
connected devices work fine, though. The question is: what can I do in such a 
case if I don't want to reboot my box? 
-- 
wbr, Maxim Filimonov
che@bein.link