I miss the option for this...
The widget only makes the brightest or darkest setting... :-(
Sent from my LT15i using XDA App
when you use the standard "Power Control" widget you can toggle min/user/max
with user being the setting that you set in the display settings.
and if you have a user setting somewhere in the middle, then it will adjust to the ambient light.
If you install widgetsoid (a massively enhanced version of the powercontrol widget mentioned above) the brightness control has an auto option, which works fine.
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.
cruxlin said:
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.
Click to expand...
Click to collapse
I think I just fell in love. Thanks a lot!
daveybaby said:
If you install widgetsoid (a massively enhanced version of the powercontrol widget mentioned above) the brightness control has an auto option, which works fine.
Click to expand...
Click to collapse
I have widgetsoid installed and the auto brightness control just sets my brightness to the minimum..
DemonicHawk said:
I have widgetsoid installed and the auto brightness control just sets my brightness to the minimum..
Click to expand...
Click to collapse
Are you sure? Works here just fine.
Try holding your thumb over the light sensor, see what happens.
Yeah, i've tried covering it and putting a flashlight to it, neither do anything when on auto. I even went into the service menu to make sure it was working properly.
I guess i'll just have to stick with a fixed brightness and let it "auto adjust" as needed. Maybe its the generic .181 build im using?
Hmm, i don´t know who is wrong but i was thinking that the arc only has an automatic brightness that can not be disabled. I have a german arc (unbranded, .181 FW) and it doesn´t matter to which level the brightness is set the automatic is always active and permanently regulates the brightness. Woul be very gald if SE would integrate an automatic brightness on/off setting with the next firmware
cruxlin said:
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.
Click to expand...
Click to collapse
Genius!! Many thanks
Strange! with the update to 2.3.3 it stopped auto-dimming (not sure if it was due to the update or due to me installing juice defender)
And i can not get turn it on with the Power Widget.
cruxlin said:
echo 1 > /sys/devices/i2c-0/0-0040/leds/lcd-backlight/als/enable
1 to enable, 0 to disable
Click to expand...
Click to collapse
I get "permission denied" trying to do that
but "cat" ing the vqalue gives me a 0
do I have to root?
cruxlin said:
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.
Click to expand...
Click to collapse
cat /sys/devices/i2c-0/0-0040/leds/lcd-backlight/als/params
gain,filter_up,filter_down,offset
2,0,0,0
any clues what gain and offset are used for?
this works brilliantly
Thank you so much
And yes you need ROOT
cruxlin said:
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.
Click to expand...
Click to collapse
Hi cruxlin
Thanks allot for your information on how to change this. I have found on my ARC with 2.3.3 that als/enable is allways configured to "1". Doing echo "0" > als/enable will not change this value. It is working fine for als/params where I managed to change how fast the brightness are changing.
I also discovered an odd way of manually disabling/enabling the light sensor by using the default sony ericsson brightness toggle widget. Setting this to "dim" will disable the auto brightness and you can set the brightness manual to whatever level you wish. When you toggle the widget to enable brightness it will both enable auto brightness and change brightness to the value you previosly used as minimum.
I had for testing added echo 2,6,6,0 > als/params for fast brightness change and using a flashlight. This made the brightness update the same second I moved the flashlight over the light sensor.
I actually very much like the sony ericsson way of controlling this as it enables me to define minimum brightness with auto brightness enabled and very quickly use the dim toggle to quickly change to some other preffered value.
So with that second script you can also get rid of the backlight stuttering higher and lower in some situations?
Ambroos said:
So with that second script you can also get rid of the backlight stuttering higher and lower in some situations?
Click to expand...
Click to collapse
I do not think I have experienced this backlight stuttering, how do you notice this?
I have just yesterday managed to get my auto brightness working, my SE brightness widget had been set to dim shortly after I got the phone and I had not touched it until yesterday unknowing that this also controls the auto brightness
hygge said:
I do not think I have experienced this backlight stuttering, how do you notice this?
I have just yesterday managed to get my auto brightness working, my SE brightness widget had been set to dim shortly after I got the phone and I had not touched it until yesterday unknowing that this also controls the auto brightness
Click to expand...
Click to collapse
It's just that in some low-light situations the automatic brightness flips out, and switches between two settings at an extremely fast speed, creating a flickering effect. Doesn't happen a lot, but it is pretty annoying when it happens.
Ambroos said:
It's just that in some low-light situations the automatic brightness flips out, and switches between two settings at an extremely fast speed, creating a flickering effect. Doesn't happen a lot, but it is pretty annoying when it happens.
Click to expand...
Click to collapse
I do experience that on my Neo too, try to move your phone a bit, or hold your thumb over the light sensor and release it. Works sometimes.
I ran the script in glite and it makes no difference for me any pointers thx
hygge said:
I also discovered an odd way of manually disabling/enabling the light sensor by using the default sony ericsson brightness toggle widget. Setting this to "dim" will disable the auto brightness and you can set the brightness manual to whatever level you wish. When you toggle the widget to enable brightness it will both enable auto brightness and change brightness to the value you previosly used as minimum.
I had for testing added echo 2,6,6,0 > als/params for fast brightness change and using a flashlight. This made the brightness update the same second I moved the flashlight over the light sensor.
I actually very much like the sony ericsson way of controlling this as it enables me to define minimum brightness with auto brightness enabled and very quickly use the dim toggle to quickly change to some other preffered value.
Click to expand...
Click to collapse
It works perfectly for me, thank you.
After upgrading to 2.3.4 where power control widget is missing (I dont know why), I was not able to set auto-mode.
With this solution I recovered it and, more ahead, I have now something I was looking for, the way to set the low brightness intensity, that was very high when dark night.
I cannot set the other paramethers, since I lost root while updating (I'll need to fix this), but for the moment, it works fine.
Again, thanks a lot.
daveybaby said:
If you install widgetsoid (a massively enhanced version of the powercontrol widget mentioned above) the brightness control has an auto option, which works fine.
Click to expand...
Click to collapse
Even if you uncheck auto, it will use the light sensor to set the brightness, the input you give is just the minimal brightness. Try putting the brightness on ~8% in a place with light, then hold you hand above the light sensor. Screen will still become darker.
I use the Auto setting as it seems to work very well except when out in direct sunlight. It will adjust up to 80-90% but not go all the way. If I am in direct sunlight and switch from Auto to High the screen definitely brightens a bit (and vice versa), does this happen to any one else?
While we are at it, a simple Toggle or Live tile to get to the brightness would be nice. Having to go through Settings etc. is a pain.
What setting do you have brightness set to when Auto is enabled? I believe that Auto also uses the Low/Medium/High settings to determine the range of what Auto will change to. So, there are really six different brightness settings: Low/Med/High with and without Auto.
ElNino77 said:
What setting do you have brightness set to when Auto is enabled? I believe that Auto also uses the Low/Medium/High settings to determine the range of what Auto will change to. So, there are really six different brightness settings: Low/Med/High with and without Auto.
Click to expand...
Click to collapse
High. Try this please, set your phone on high brightness, go outside and then toggle the 'auto' switch on and off, you should see a difference. Thanks for the reply though!
I highly recommend you do not use auto brightness setting. It guzzles the battery. Use Low inside and Med outside to maximize your battery life. Use High outside if really needed.
Seed 2.0 said:
I highly recommend you do not use auto brightness setting. It guzzles the battery. Use Low inside and Med outside to maximize your battery life. Use High outside if really needed.
Click to expand...
Click to collapse
Oh, do I understand that! High will devastate the battery in no time but.... When I'm outside I need to actually see the display so high it must be. Just wish Auto would actually set it to High instead of "sorta High"
I see exactly the same thing. It seems to be by design.