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Tips & Tricks

Troubleshoot, find support articles, run tests directly on your phone with the support application.
Read more and discuss the app here.

Ambient Light Sensor

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Message 1 of 28
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Message 1 of 28

Ambient Light Sensor

the Xperia Arc had 3 updates more or less since it was released and so far the Ambient Light Sensor it's not working, what's going on?

27 REPLIES 27
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Message 2 of 28
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Message 2 of 28

Re: Ambient Light Sensor

Is this a hardware issue or a software issue?

there are myriad threads about this and so far it hasn't been solved

threads like this

http://talk.sonyericsson.com/message/76811#76811

All the way back to MAY 2011

Master
Message 3 of 28
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Message 3 of 28

Re: Ambient Light Sensor

i dont know i see my screen to dim if i enter a dark room..and the screen brightens itself when i go outside in the sun..????

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Message 4 of 28
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Message 4 of 28

Re: Ambient Light Sensor

it doesn't work at all, now the question is it a hardware issue or a software issue? if it's hardware you can add it to the

Housing Crack

Ambient Light Sensor

seem like a recall could and should be done if it's hardware related, if iCrap products can do a recall so can SE

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Message 5 of 28
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Message 5 of 28

Re: Ambient Light Sensor

using the Service Menu test

screenshot_2011-11-15_1959.pngscreenshot_2011-11-15_1959_1.pngscreenshot_2011-11-15_1959_2.png

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Message 6 of 28
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Message 6 of 28

Re: Ambient Light Sensor

I haven't tried this, but since SE is not fixing it the XDA forum is back to the rescue, you need to root your phone first, if you want to continue I'm not responsible for any damage to your phone.

http://forum.xda-developers.com/showthread.php?t=1085286

cruxlin

For ARC, you can enable and disable by executing the following command in a terminal. You can write it in a script file and make it one-button action with the help of "gscript lite".

echo 1 > /sys/devices/i2c-0/0-0040/leds/lcd-backlight/als/enable

1 to enable, 0 to disable


In addition, by adjusting cutoff frequency of low pass filter of ALS output, you can adjust the changing speed of brightness relative to ambient lighting. The command is listed below:

echo 2,4,2,0 > /sys/devices/i2c-0/0-0040/leds/lcd-backlight/als/params

2nd figure "4" is to define cuf-off frequency to 4Hz for

increasing brightness. Range 0~7, larger value for faster change

3rd figure is for decreasing brightness. This example, 2, is to define 2Hz for cut-off frequency.

Master
Message 7 of 28
2,046 Views
Message 7 of 28

Re: Ambient Light Sensor

nah i dont want to root my phone Dizzy Face

also..the comment above - it happens with my phone Neutral Face

i mean it dims itself when i enter a dark room and vice versa..so is this auto brightness or not..?

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Message 8 of 28
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Message 8 of 28

Re: Ambient Light Sensor

Slightly frowning Face it doesn't work with me

Master
Message 9 of 28
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Message 9 of 28

Re: Ambient Light Sensor

to be precise i sometimes notice it and sometimes doesnt..

even my laptop has this feature which i want to removeAngry Face

trust me.. it doesnt helps that much instead irritates you..Angry Face Smiling Face with open mouth & closed Eyes

i mean whenever i play any game... its keep on dimming , brightning and again and again..

and ruins the fun..

if you are demanding that , please ask for a enable \ disable auto brightness option also Dizzy Face Smiling Face with open mouth & closed Eyes

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Message 10 of 28
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Message 10 of 28

Re: Ambient Light Sensor

ha but they should fix it, I remember when the X10 came out running 1.6 it was working just fine, then they did some small update and it messed it up then with 2.1 it was retarded