From owner-freebsd-current@freebsd.org  Wed Oct 25 11:26:32 2017
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Subject: Re: Okular or any pdf reader
To: blubee blubeeme <gurenchan@gmail.com>
Cc: FreeBSD Ports <freebsd-ports@freebsd.org>,
 FreeBSD current <freebsd-current@freebsd.org>
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From: Hans Petter Selasky <hps@selasky.org>
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Date: Wed, 25 Oct 2017 13:23:51 +0200
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On 10/25/17 13:15, blubee blubeeme wrote:
> Okay, I tried using chatbot for android to ssh into this laptop and that
> works just fine.
> Then when I launch okular the computer had locks up and the ssh dies on the
> phone as well. So it seems not even ssh works when this this freezes up.
> 
> Any other suggestions?

Try to set:

sysctl net.inet.tcp.per_cpu_timers=1

Before connecting via SSH.

Does the same happen when using VESA driver or is this specific to using 
the NVIDIA driver. If the NVIDIA is at cause, I cannot help.

--HPS