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Posts: 152 | Thanked: 47 times | Joined on Feb 2010 @ Shanghai, China
#1
It seems that I need to adjust the brightness of the screen by myself.

And there is no option to enable the screen brightness changing automatically.

So, I am wondering, why put a light sensor on N900 then ?

Anyone knows the detail ? Please let me know. Thanks.


Last edited by lanwellon; 2011-05-21 at 07:35.
 
somedude's Avatar
Posts: 1,312 | Thanked: 736 times | Joined on Sep 2009
#2
mine always works point to direct light and slowly brightness goes up, go to dark room brightness goes down, but its not instant not on any phone
 
JonWW's Avatar
Posts: 623 | Thanked: 289 times | Joined on Jan 2010 @ UK
#3
So you have never noticed that when you put your finger over it after a couple of seconds then screen will darken, very distracting?

There is a thread and a wiki page about disabling it:
http://talk.maemo.org/showthread.php?t=64191
http://wiki.maemo.org/Disable_the_ambient_light_sensor
 
Posts: 133 | Thanked: 138 times | Joined on Nov 2007
#4
If you have the brightness set to max, the light sensor seems to be ignored. So set the brightness below max and it should automatically adjust brightness.
 

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Posts: 152 | Thanked: 47 times | Joined on Feb 2010 @ Shanghai, China
#5
I had installed 'Simple Brightness Applet'
(http://maemo.org/downloads/product/M...htness-applet/)

Will it make the light sensor to be ignored ?
 
dr_frost_dk's Avatar
Posts: 1,503 | Thanked: 2,688 times | Joined on Oct 2010 @ Denmark
#6
Originally Posted by lanwellon View Post
I had installed 'Simple Brightness Applet'
(http://maemo.org/downloads/product/M...htness-applet/)

Will it make the light sensor to be ignored ?
No, the only way to "disable" the light sensor is to use the simple no als "fix" or use my custom brightness.

Link in my signature
 
Posts: 28 | Thanked: 28 times | Joined on Mar 2011 @ Hong Kong
#7
Hi there,

As other users have pointed out, the light sensor does adjust screen brightness depending on ambient light, but there is a delay of a couple of seconds.

The other thing it does is activation of the backlight on the keyboard. So in bright light the backlight is off, and it comes on in dim lighting.

I have also installed Simple Brightness Applet (good app!) which is useful for changing the screen brightness in large steps. This control is normally hidden in the settings menu. It doesn't disable the ALS since the ALS only makes small changes (I think one step up and one step down).
 
dr_frost_dk's Avatar
Posts: 1,503 | Thanked: 2,688 times | Joined on Oct 2010 @ Denmark
#8
Originally Posted by Jerex View Post
Hi there,

As other users have pointed out, the light sensor does adjust screen brightness depending on ambient light, but there is a delay of a couple of seconds.

The other thing it does is activation of the backlight on the keyboard. So in bright light the backlight is off, and it comes on in dim lighting.

I have also installed Simple Brightness Applet (good app!) which is useful for changing the screen brightness in large steps. This control is normally hidden in the settings menu. It doesn't disable the ALS since the ALS only makes small changes (I think one step up and one step down).
Again the only fix so far is in my thread or the wiki JonWW linked to.

Only downside is that the keypad will not dim also, but in my opinion this is a small price to pay for getting rid of that ignoring slow light-sensor screen fade + with the simple mod you get 5 good levels of light, instead of 4 dark and 1 thats to bright.
 
Posts: 152 | Thanked: 47 times | Joined on Feb 2010 @ Shanghai, China
#9
Thank you for your answers, guys !

I had just tested and found that the keyboard back light works as you said.

Actually, I use a transparent screen protector to protect the screen from scrach, but the light sensor is covered by this protector.

It makes the sensor not that sensitive.

So everytime I open the keyboard, the back light of the keyboard always turned on.

To figure it out, then I used a flashlight to focus the light on the sensor and at the same time, opening the keyboard. This time the back light does not turned on, then I know that what you guys said it is just right.

Thank you again !
 
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