Ps. don't set limits to: Code: limits 0 500 ... it simply won't work. With 125 and 250 blacklisted, device will still idle @ 500 - so, no harm, no gain - and without blacklisting 125 and 250, it may lock on some of them, under specific conditions. "0" isn't proper value for CPU frequency. CPU underclock to effective 0 mhz via other mechanism (when idle), not controllable via kernel settings, at least currently. If someone really want, limiting it to "500 500" will work, but device with limits 500-900 doesn't use more power in idle. In fact, when I measured it limited to 500 vs. limited to 900 for ~10 hours, limits on 900 used less power - ho ever, only by 30-40 mAh (during ~10 hours, not per hour).
limits 0 500