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Date: Mon, 11 Jun 2012 10:14:21 +0200
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From: "Ronald Klop" <ronald-freebsd8@klop.yi.org>
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Subject: Re: su problem
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On Sat, 09 Jun 2012 18:42:27 +0200, Eugene Grosbein <egrosbein@rdtc.ru>  
wrote:

> 09.06.2012 19:47, Sami Halabi пишет:
>> %su -
>> Password:
>> load: 0.00  cmd: su 30588 [ttydcd] 0.91r 0.00u 0.00s 0% 2092k
>
> Perpaps, your system had no keyboard attached at boot time;
> or for some other reason it booted with /dev/console being serial console
> instead of vidconsole. su locks trying to access serial console
> that is /dev/ttyd0 by default and has Carrier Detect flag enabled.
> Hence, it waits for CD on the first serial port (miserably and  
> hopelessly).
>
> You can check if it's true with "sysctl kern.console" command.
> You could ask someone to boot the system with keyboard attached -
> no need to type anything, though. The system should detect it
> and assingn /dev/ttyv0 as /dev/console instead of /dev/ttyd0.
> And "su" won't lock.
>
> Eugene Grosbein


Can you see what su is doing with procstat -kk <pid>?