I am one of the many users suffering from overheating Lenovo ThinkPads. Mine is a W500. Here is the bug report "Overheat due to slow fans when on 'auto'" filed of a different model in 2011: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/751689 with comments from many other various model ThinkPad users saying that putting the fan control to 'disengaged' mode makes the fan run at full speed continuously, usually solving the overheating problem without further CPU throttling (works for me - the command is "echo level disengaged |sudo tee /proc/acpi/ibm/fan"). The underlying problem on many Lenovo machines is broken ACPI, and when that is combined with bullheaded Linux kernel sticking to standard procedure when it obviously doesn't work in reality, it leads to crashing. I had an ideological quarrel about the kernel's destructive behaviour with a kernel developer here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1491797 . Result: Won't fix - Lenovo's fault. Us Lenovo users' last hope is thermald. How to redefine fan speeds so that fan control 'disengaged' mode would be made the highest available fan speed over 'high'? Doing this by default would help many computers overheating from various reasons; dust, dried thermal grease, CPU throttling not working. (If this will be done by default, there will surely be many users complaining about the noisy fans, because thermald's temperature thresholds for cooling actions are rather low in my opinion. For my W500 it would be fine if the fan control disengaged at about 93 C and went back down to high at about 85 C. I would also appreciate if the software reminded me to clean the computer when it detects dustiness as inferred from the development of the many temperatures measured over many months of uptime. It would have to have a "I just cleaned it - recalibrate now"-button to work well.) Harri K. Hiltunen harri.k.hiltunen(a)gmail.com