[ltp] T60 Fan speed

Richard Neill linux-thinkpad@linux-thinkpad.org
Fri, 16 Mar 2007 01:19:32 +0000

Alfredo Matos wrote:
> Hi,
> My laptop is getting very hot under extremely heavy loads, and i'm
> trying to increase fan speed, but it stays very silent, which makes me
> wonder if it is actually running at full speed. ibm-acpi says the
> following:
> $ cat /proc/acpi/ibm/fan 
> status:         enabled
> speed:          3767
> level:          7
> This is the maximum i can set. I read on Thinkwiki.org that the T60
> reaches 4500 rpms. 

What temperature are you actually getting? Are you worried about the 
temperature because it is too hot for your lap, or because the machine 
is in danger of damage? If the former, you may find that a table is the 
best solution, since 65 degrees is not unreasonable for the CPU, but 
even 40 degrees is not pleasant for the knees!

Also, what are you loading it with? I usually find my T60 only runs at 
full cpu for a short period at a time. Most processes aren't CPU-bound, 
so this could perhaps indicate a different problem (eg running graphics 
intense stuff with the vesa driver, or having DMA problems).