Originally Posted by Power

Okay, I have been experimenting and I enabled smartreflex yesterday and this time Nokia N900 just lost about 1% battery idling with WiFi through the night (8-pm to 7 am), about 11 hours. Even more amazing! Not sure how it will affect my use time, but standby is wow!

Here's what I did in the shell:
root
echo 1 > /sys/power/sr_vdd1_autocomp
echo 1 > /sys/power/sr_vdd2_autocomp

PS: See the break in the batteryeye graph, strange aye? That's when I enabled smartreflex :-)

Originally Posted by Power

s33 & JorgeFX: see from 20:00 hrs to 7:00 hrs, that's when it was on standby (with WiFi), on my desk, connected to wifi, no widgets with only Nokia Messaging on checking for mails, LED off.

The massive drop of 30-35% from 13:00 hrs to 19:00 hrs is when I was driving with sygic on, on a few calls, music playing and some camera stuff, and connected all the time via 2G (no autodisconnect). Remember, I am just talking idle time here, not usage time.

Oh and in the night I did wake up couple of time(s) to check

I don't have any custom kernel yet. So, that will be the next step.

Originally Posted by shazzy84

sudo gainroot
echo 1 > /sys/power/sr_vdd1_autocomp
echo 1 > /sys/power/sr_vdd2_autocomp

That will enable Smart Reflex

To check:

cat /sys/power/sr_vdd1_autocomp

If it enabled you will see: 1
If it is not you will see: 0

Originally Posted by s33

Well said man.....i also thought how he got that much standby with a grap like that......

btw ur standby also luks awesome(17hrs)...can u brief ur settings???
i get only 12-13 hrs with light usage

that graph luks like it'll give a standby of max 12 hrs if it went like that all the way

@Power--care 2 xplain????we are confused

Originally Posted by Power

s33 & JorgeFX: see from 20:00 hrs to 7:00 hrs, that's when it was on standby (with WiFi), on my desk, connected to wifi, no widgets with only Nokia Messaging on checking for mails, LED off.

The massive drop of 30-35% from 13:00 hrs to 19:00 hrs is when I was driving with sygic on, on a few calls, music playing and some camera stuff, and connected all the time via 2G (no autodisconnect). Remember, I am just talking idle time here, not usage time.

Oh and in the night I did wake up couple of time(s) to check

I don't have any custom kernel yet. So, that will be the next step.

Originally Posted by Power

s3: Yup. I think the GPS + Sygic combo kills the battery pretty pretty fast, also I had the backlight enabled all the time. It's mostly got to do with CPU usage, when it's idling the CPU is usually near to 0%. Now, if we could get the CPU to just keep it's lower (maybe the 'titan' kernel).

To be honest, I don't understand the battery usage pattern of the 900 myself. I usually find it performs better once it drops a few percentage points. Like for example, it would drop from 95-85% pretty fast.

PS: Just discovered, the second smartreflex command (echo 1 > /sys/power/sr_vdd2_autocomp) does not work with PR 1.2, it still remains at 0, even if you enable it.

Originally Posted by JorgeFX

Like I said, I have the titan's custom kernel with the Starving setting and smartreflex enabled on VDD1 only because enabling it for VDD2 is unstable for me.

Also I have the POWERSAFE_BIAS from Titan Kernel enabled on 25. That helps me to keep the CPU on a very low range of MHZ.

By the way, I have the 125MHZ speed enabled and reniced the background tasks, and the ignore_nice_load value set to 1.

I think that is everything, but it took me several weeks to find out settings that give me more than 12hrs of intermediate usage.