Messages in this thread | | | Date | Mon, 8 Sep 2008 15:29:12 +0200 | From | Pavel Machek <> | Subject | Re: 2.6.26: thinkpad x60 is cooled passively |
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On Wed 2008-08-13 16:43:38, Theodore Tso wrote: > On Wed, Aug 13, 2008 at 05:31:37PM -0300, Henrique de Moraes Holschuh wrote: > > > know the fans have a tendency to go bad within 12-18 months, and so > > > the CPU heat sink and fan unit needs to be replaced perdiocially. > > > What does /proc/acpi/ibm/fan report? > > > > ThinkPad fans have a overdesign range of about 2x, they almost never stop > > because they're too old. Clogged in dirt, on the other hand... a clogged > > fan often spins FASTER and cools less. > > > > Want to see how much your fan has as far as a safety margin goes? use > > thinkpad-acpi to measure RPMs in level 7 and also when you switch PWM off > > (i.e. set it to 100% duty cycle). Mine gets faster by 1500RPM or so that > > reflects the extra torque the EC can apply to get the fan to run at the > > speed it wants it to. > > Hmm, maybe I've just had bad luck, or I live in a very dusty > environment (four cats, including two longhairs in perma-shed mode, > will do that to any house), but I've had at least 3 fan failures in > the past 5-6 years where the fan stopped entirely, and had to be > replaced. When I took it out, it was quite dirty, but the way it spun > why I tried moving the fan blades with my finger, it felt just like > the failure modes I've had with standard power supply fans that have > gone bad due to old age.
Okay, seems like vojtech fixed my notebook with a bit of compressed air... a lot of dust came out, and machine works okay now. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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