Lux - Am I the Only One?

Jeremiah Bonds

Trusted Member
Aug 16, 2010
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Am I the only one that find Lux Auto Brightness to hog battery? I've tried different configurations but I can never find anything to use less battery. I've seen so many people praise the app, but I just can't get it. hmm..

Who else is using it, and do you find it saves battery or uses more?
 
Is it showing up in battery stats or are you getting less SOT and battery life while using it?

I feel like it works excellent. I'm getting just as much SOT and battery life on the V10 as I did on the G4.
 
I just see the battery percentage drain much quicker when I have it installed and my SOT is lower.

Posted via the Android Central App
 
I'm not sure it's having much of an impact on my battery one way or the other, but I do like the auto brightness adjustment every time I turn my phone on.
 
I just installed it so I will keep an eye on it and report back. I love the app so far though. The LG auto brightness is a little too aggressive for me.

Posted via the Android Central App
 
On the G4, screen brightness is a major factor in SOT and I wouldn't be surprised if that holds true on the V10 as well. Lux will improve SOT only when it is set up no brighter than the built-in brightness and, for example, to dim the screen in situations where the built-in brightness control causes the screen to be unnecessarily bright. I found that I had to give Lux several reference points for brightness under various lighting conditions (usually 3: one for lowest, one slightly less dim, and one for outdoor/bright daylight conditions) to work perfectly.
 
is it possible you can provide screen shots of that? I've tried it on my G2, my G4 and now my V10.. yesterday it did pretty well on the V10.. I think one of the issues is that I live in Souther California where it's almost always sunny and bright so my screen would always wants to get lighter.

Also, has anyone noticed that with the V10, Lux dims the second display?
 
Sure !
The way I understand things, Lux creates a logarithmic curve that correlates ambient light (a.k.a. illuminance) with screen brightness settings based on the samples you provide. You can see what data samples Lux is currently using in Settings > Profile Editor. My Profile consists of three data points or samples, two for dark and dim conditions (0 and 4 Lux), and full brightness at daylight (10,000 Lux).

Lux.profile.jpg

You can open the Lux Dashboard to see the correlation of Illuminance (as measured by the phone's light sensor) and screen brightness (as a result of the log curve) at any given time. To create a new point on the curve, adjust the brightness under the lighting conditions you want to record, and then tap the link button to save the data point.

Lux.dash.png

Here's a graph of a few of those correlations taken from the Lux Dashboard. The data point at 250 Lux was taken under a fluorescent light similar to office lighting; daylight readings around here would probably yield no more than 1,000 Lux in the middle of December, but direct sunlight can go much higher. Note that the illuminance scale (y-axis) is logarithmic.

Lux.Samples.log.png

And here is a readout of the bottom part of the graph from darkness to about room light conditions, in linear form. As you can see above, I only set up the data points at 0 (here presented as 1 because of the log graph above) and at 4, Lux (the app) does the rest. Essentially, by setting up a sample point at 4 Lux I have adjusted the shape of the log curve a little to the right: without that sample, the screen was getting a little "too bright too soon" in dim conditions.

Lux.Samples.png

Hope this helps.
:cool:

Edit. I don't know if Lux can alter the secondary screen brightness, but if it does, it's probably not because of any code in the app, since the V10 is probably the only phone on the market right now with a secondary screen.
 
Last edited:
Sure !
The way I understand things, Lux creates a logarithmic curve that correlates ambient light (a.k.a. illuminance) with screen brightness settings based on the samples you provide. You can see what data samples Lux is currently using in Settings > Profile Editor. My Profile consists of three data points or samples, two for dark and dim conditions (0 and 4 Lux), and full brightness at daylight (10,000 Lux).

View attachment 210912

You can open the Lux Dashboard to see the correlation of Illuminance (as measured by the phone's light sensor) and screen brightness (as a result of the log curve) at any given time. To create a new point on the curve, adjust the brightness under the lighting conditions you want to record, and then tap the link button to save the data point.

View attachment 210911

Here's a graph of a few of those correlations taken from the Lux Dashboard. The data point at 250 Lux was taken under a fluorescent light similar to office lighting; daylight readings around here would probably yield no more than 1,000 Lux in the middle of December, but direct sunlight can go much higher. Note that the illuminance scale (y-axis) is logarithmic.

View attachment 210909

And here is a readout of the bottom part of the graph from darkness to about room light conditions, in linear form. As you can see above, I only set up the data points at 0 (here presented as 1 because of the log graph above) and at 4, Lux (the app) does the rest. Essentially, by setting up a sample point at 4 Lux I have adjusted the shape of the log curve a little to the right: without that sample, the screen was getting a little "too bright too soon" in dim conditions.

View attachment 210910

Hope this helps.
:cool:

Edit. I don't know if Lux can alter the secondary screen brightness, but if it does, it's probably not because of any code in the app, since the V10 is probably the only phone on the market right now with a secondary screen.

thanks man.. I totally mimicked your settings to see how it works for me.. so far it seems a bit brighter than mine was originally.

Thanks for taking the time to do this.
 
My results from today using your settings.

Posted via the Android Central App
 

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Looking good.. would you say this is better, worse or same as before? Btw, I normally using 'dynamic' adjustment, not manual as shown in my screenshot. Not sure why it turned out that way.

Oh ya I didn't use manual. Haha.

I think my SOT was a little worse tbh.. Today I'm using yours as a key and changing things around a bit to see what happens.

Posted via the Android Central App
 
Yeah, the display panel on the V10 is most likely not the same as on the G4.. the G4 happens to have a slight falloff in brightness at the very bottom of the curve, and that is what I am counteracting with these settings. Is the V10 doing the same thing, i.e. a little too dark in dim light?
 
with the stock settings at -30 it was pretty dark.. but I do think this screen is brighter than the G4. I don't have any problems with it. I had to tune it down a little.. It's living around 41 percent in doors and it's fine. The stock auto brightness on this phone is better too, but I don't recall having much problems with it being too dark in dim light.. let me pay attention a bit more and I'll let you know.
 
I keep mine about 40 ask the time. I tried this app and it was always changing and I did not quite understand how to fine tune it. I uninstalled it until I research it more
 
Does Lux affect the brightness of the secondary screen btw?

Mine seems to dim really dark, but sometimes not at all. I can't figure it out.. But yesterday I did 18 hours with this phone and 3 hours of SOT. So I think I have my settings how they should be.

My question is, does the smart profile toggle between day and night automatically?

Posted via the Android Central App
 
I know the front sensor adjusts the secondary screen brightness. I think there are 3 settings. If you cover it, it goes out completely (like in your pocket), at night it is very dim, and when it is light it is brighter
 
My question is, does the smart profile toggle between day and night automatically?

Posted via the Android Central App
Based on a set location in the settings.
4da5cc6fa3ed238bf3a72f50480ba5c7.jpg
 

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