Turn off backlight completely in sunlight - maemo.org

Active Topics

Is there a section to talk about Java ME? Apps, etc. (0)
to General by Kalatti - 3 hrs, 13 mins ago
Extra softwares in Sailfish using CLI, repositories, etc (117)
to SailfishOS by nieldk - 2 days ago
Firefox with Leste (6)
to Maemo 7 / Leste by teroyk - 2 days, 21 hrs ago
more...

Page 1 of 2

Next >

Thread Tools

wotevah	2010-07-30 , 03:49
Posts: 31 \| Thanked: 35 times \| Joined on Jun 2010	#1

I have noticed that in strong sunlight the N900 screen is fairly easy to read still. It's not the backlight that's stronger, I covered the light sensor to dim it and I can still read the screen just fine.

So, I am wondering if it's possible to turn off the backlight completely - preferrably on demand but perhaps also automatically when the light level is enough. This can also help save some battery because the N900 appears to be automatically boosting the backlight level to compensate for ambient light - which is nice but in strong sun it's counterproductive.

Quote & Reply |

The Following 2 Users Say Thank You to wotevah For This Useful Post:
CutterSlade, timwatt

	pycage	2010-07-30 , 09:32
	Posts: 3,404 \| Thanked: 4,474 times \| Joined on Oct 2005 @ Germany	#2

This was possible on the N810 which also had a transflexive (read: sunlight-readable) screen with an app called advanced backlight.
I think the same should be possible with the N900, too.
Maybe by echo'ing a '0' directly into the appropriate sysfs interface of the driver? Did anybody try already?

__________________
Tidings - RSS and Podcast aggregator for Jolla - https://github.com/pycage/tidings
Cargo Dock - file/cloud manager for Jolla - https://github.com/pycage/cargodock

Quote & Reply |

The Following User Says Thank You to pycage For This Useful Post:
CutterSlade

	ossipena	2010-07-30 , 09:35
	Posts: 3,159 \| Thanked: 2,023 times \| Joined on Feb 2008 @ Finland	#3

what about making a request to there:

http://maemo.org/packages/view/simpl...htness-applet/

__________________
Want to know something?
K.I.S.S. approach:
wiki category:beginners. Browse it through and you'll be much wiser!
If the link doesn't help, just use
Google Custom Search

Quote & Reply |

The Following 3 Users Say Thank You to ossipena For This Useful Post:
CutterSlade, fw190, wotevah

nman	2010-07-30 , 16:42
Posts: 124 \| Thanked: 105 times \| Joined on Jul 2010	#4

I would love an app for customizing the backlight level. Right now I find it's too bright in total darkness... if I reduce the level then it's too dark everywhere else.

Quote & Reply |

The Following User Says Thank You to nman For This Useful Post:
CutterSlade

wotevah	2010-07-31 , 01:43
Posts: 31 \| Thanked: 35 times \| Joined on Jun 2010	#5

Originally Posted by ossipena

what about making a request to there:

http://maemo.org/packages/view/simpl...htness-applet/

Good idea, I will do that.

Quote & Reply |

The Following User Says Thank You to wotevah For This Useful Post:
CutterSlade

	lazart	2012-01-12 , 12:27
	Posts: 99 \| Thanked: 64 times \| Joined on Jun 2009 @ Stuttgart/Germany	#6

i'm also interested in turning the backlight completely off in sunlight, any news?

Quote & Reply |

Aonsaithya	2012-01-12 , 13:12
Posts: 147 \| Thanked: 150 times \| Joined on Aug 2010 @ Finland	#7

Try this in terminal:

Code:

root
echo >/sys/class/backlight/acx565akm/brightness 0

Edit:
You can make a Desktop Command Execution widget with this script (DO NOT SET IT TO RUN ON BOOT OR PERIODICALLY

Code:

echo "echo 0 > /sys/class/backlight/acx565akm/brightness" | sudo gainroot | echo ""

Last edited by Aonsaithya; 2012-01-12 at 13:19.

Quote & Reply |

The Following User Says Thank You to Aonsaithya For This Useful Post:
lazart

	dr_frost_dk	2012-01-12 , 13:26
	Posts: 1,503 \| Thanked: 2,688 times \| Joined on Oct 2010 @ Denmark	#8

or you could install my custom brightness, just change 1 value in it and it will go to 0, with that you have total control of brightness.

link in my signature.

PS. it's post #2

__________________
N900 @ 850MHz (LV) & 3044mAh Battery
Battery Tests and Battery Mod / Homemade 3000mAh XL Battery - (DONATE)
Custom Brightness & No Light Sensor
N900 DIY Micro Amplifier, turn your N900 into a home stereo

Fix you USB before and after it breaks
Feel free to contact me through PM, Skype or G.Talk

Quote & Reply |

The Following 2 Users Say Thank You to dr_frost_dk For This Useful Post:
lazart, _David_

	lazart	2012-01-12 , 18:41
	Posts: 99 \| Thanked: 64 times \| Joined on Jun 2009 @ Stuttgart/Germany	#9

hi, thanks

I've never done any programming for maemo, but I'd read the light sensor value (if sun light has a greater value than bright ambient light) and set the brightness to 0 at sun light.
maybe that could help to create such a script:
http://doc.qt.nokia.com/qtmobility/s...using-a-sensor

Quote & Reply |

	dr_frost_dk	2012-01-12 , 19:46
	Posts: 1,503 \| Thanked: 2,688 times \| Joined on Oct 2010 @ Denmark	#10

Originally Posted by lazart

hi, thanks I've never done any programming for maemo, but I'd read the light sensor value (if sun light has a greater value than bright ambient light) and set the brightness to 0 at sun light.
maybe that could help to create such a script:
http://doc.qt.nokia.com/qtmobility/s...using-a-sensor

well the point of my custom brightness is no light-sensor

Fix you USB before and after it breaks
Feel free to contact me through PM, Skype or G.Talk