Just curious if you are experiencing any Sleep of Death using the CPU screenstate settings you have, specifically enabling a powersave as the sleep governor with a cpu freq range of 200-500. A very common issue on the ICS builds so far is setting the max freq below 1ghz can cause Sleep of Death where the device will not wake from sleep and must be rebooted.
I didn't experience that for many days and ever with this tweaks. Yes, just like you saw, sleep governor with 200-500 cpu freq, it's totally ok with me. Only the chance for sleep of death would be the time when the phone wakes up. An that time, phone goes back to with 200-1000 range to avoid the some known issues.
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