[ltp] WARNING: Lenovo ThinkPads and 65W power supplies

[Eric Van Buggenhaut]

2010/11/5, Henrique de Moraes Holschuh <hmh@hmh.eng.br>:

[...]

>
> If your usage patterns does include the use of a 65W power adapter
> *WITHOUT* a charged battery:
>
>   1.  Use the latest Linux stable kernels, as there were recent fixes
>       to the ACPI PPC handling;
>
>   2.  Make sure the CPUFREQ system is working (i.e. cpu frequency limits
>       are available), ACPI is operational (NEVER operate any ThinkPad
>       manufactured in the last 5 years with ACPI deactivated), and if
>       at all possible, that CPUIDLE (ACPI C states) are also working.
>       "powertop" will show both CPUFREQ and CPUIDLE operation.

I don't see any CPUFREQ/CPUIDLE operation in powertop

--

Eric