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Date:      Fri, 25 Jul 2008 15:56:11 +0100 (BST)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        Jeremy Chadwick <koitsu@FreeBSD.org>
Cc:        Zamri Besar <zam4ever@gmail.com>, freebsd-mobile@freebsd.org, freebsd-hackers <freebsd-hackers@freebsd.org>
Subject:   Re: Laptop suggestions?
Message-ID:  <20080725155502.Q21557@fledge.watson.org>
In-Reply-To: <20080724202140.GA2893@eos.sc1.parodius.com>
References:  <1216910072.2251.8.camel@jill.exit.com> <a699ffdd0807240739s60ec59a7q22cf4e53025844d6@mail.gmail.com> <20080724202140.GA2893@eos.sc1.parodius.com>

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On Thu, 24 Jul 2008, Jeremy Chadwick wrote:

> And if you go with Lenovo, be aware that their T60/T60p/T61/T61p series (and 
> possibly the X-series) are known to sport very high temperatures. Some 
> people have reported temperatures of nearly 90C on their GPU (when idling), 
> which has a direct effect on the overall temperature of the CPU (due to 
> close proximity) and so on.  This requires the fan to be on at almost all 
> times (usually low-speed mode).  Others have it worse (the laptop literally 
> shutting off in the middle of operation):

Likewise, I've had difficulty with the z60t, which has suspend issues (it 
doesn't), and occasional atheros flakiness that I have been meaning to bug Sam 
about but haven't had time to do so as yet.  Sadly, the battery failed quite 
quickly once the warranty expired, so I barely use it anymore, which is 
something of a shame but left me with a bad impression.

Robert N M Watson
Computer Laboratory
University of Cambridge

>
> http://unix.derkeiler.com/Mailing-Lists/FreeBSD/stable/2008-06/msg00020.html
>
> Many of these laptops emit a strange high-pitch electrical noise which
> fluxuates in frequency and amplitude; of course, a lot of people can't
> hear it, which is good for them.  This was tracked down to some power
> saving features listed in the BIOS (of both the CPU and the chipset),
> which you can disable:
> http://www.thinkwiki.org/wiki/Problem_with_high_pitch_noises
>
> Be sure to look at http://www.thinkwiki.org/wiki/Category:T60p,
> specifically the very bottom of the page.  You'll notice a very large
> number of problem entries.  A lot of them have no real response from
> Lenovo.
>
> Draw your own conclusions.
>
> -- 
> | Jeremy Chadwick                                jdc at parodius.com |
> | Parodius Networking                       http://www.parodius.com/ |
> | UNIX Systems Administrator                  Mountain View, CA, USA |
> | Making life hard for others since 1977.              PGP: 4BD6C0CB |
>
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