Lenovo Informative - High pitched noise when running off batteries
I wrote a glowing review a few weeks back about my new Lenovo / IBM Thinkpad T60 laptop. Well I'm back to give a follow-up review.
I ended up going with the extended battery, which I now can confirm is awesome. I can go sometimes over 6 hours on wireless without plugging in to recharge. Very cool.
Overall I've been pretty happy with my model, except for a few details. I accidentally ordered the wrong display, I chose the XGA instead of the SXGA+ 15 inch display. The difference is in the maximum resolution you can set. The basic XGA (what I got) has a max resolution of 1024x768. Not bad, but I would have liked the option to bump it up to a higher resolution, supported only by the SXGA display. So if that is important to you, definitely splurge on the SXGA.
My main gripe so far has been with some strange high-pitched noise coming from the laptop when I'm running on batteries only. It is faint... and really only noticeable when I'm working in complete silence. But it is one of those things that once you notice it, it bugs the crap out you!
I searched online and found it is a common problem with the dual-processors (Intel), and not limited to the T60 model. Apparently it is worse in some Gateway laptops, etc. Anyway, while searching the web I found a few suggestions that helped remedy the problem (so far... knock on wood!). I guess the noise is related to some power-saving functionality built-in to the processors... so when it is running in battery-only mode, the processors switch to this energy efficient mode. However in this mode, they are more prone to making weird noises and sounds... So one remedy I found was to disable the power-saving mode of the CPU's. It was simply an option in the system settings:
Control Panel -> Power Options -> Power Manger -> Global Power Settings -> Advanced Button
After doing that, the strange noise has mysteriously gone away.... which makes me very happy since I was seriously going crazy listening to it... and pondering returning the laptop.
Long story short... It would have broke my heart to return this laptop since it works so well in every other category except weird annoying noises... and since I got that fixed... I am still extremely happy with my purchase... and would still recommend it to anyone... as long as you know how to fix the strange noises... =)