Comments on: Cisco VPN Client freezes system with dual core CPU

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By: boynas

boynas — Thu, 25 Mar 2010 00:30:11 +0000

You are the man! Beau… Thanks for that tip.

so far so good!

By: Jack

Jack — Mon, 25 Jan 2010 09:44:08 +0000

By far this article and the corresponding comments are the best info on this subject on the web. I've suffered with this issue for over a year - and still do unfort.

I've tried EVERYTHING. Can't get OpenVPN or vpnc to work. I get a panic with cisco with wifi or ethernet on a duo core system (Lenovo T60) or on a single cpu Comcrap Presario.

I have upgraded my kernel from 2.6.24.x to 2.6.31.x. Still no luck - though, interestingly enough Mandriva 2010 provides a cisco client with cpu1 shutdown commands built-in. Still doesn't help me though.

I've tried shutting down cpu1 on my Lenovo and I still have the issue. I haven't tried loading cisco before the shutdown nor have I tried the cpu affinitytaskset trick. Sounds promising.

By: computer keeps freezing

computer keeps freezing — Fri, 22 Jan 2010 12:44:53 +0000

i haven't applied this line of command.i'm learning new things from you.thanks

By: Lamnk

Lamnk — Thu, 17 Dec 2009 09:04:42 +0000

Very interesting ! Thanks a lot for mentioning this command. I haven't even heard about it before.

By: Beau

Beau — Thu, 17 Dec 2009 08:02:20 +0000

I've experiencing this freeze problem only when I use vpnclient over a wifi connection, not over a wired connection.

I've been using this solution for a while, after finding it here. I mentioned my problems to a friend of mine and he suggested playing with processor affinity - assigning the vpnclient to a particular CPU.

I've had a pretty good success this evening.

Check out the command
taskset

and assign vpnclient to processor 0
taskset -pc 0 vpnclient connect PCF_file

By: Lamnk

Lamnk — Thu, 17 Dec 2009 01:04:42 +0000

Very interesting ! Thanks a lot for mentioning this command. I haven't even heard about it before.

By: Beau

Beau — Thu, 17 Dec 2009 00:02:20 +0000