Olimex Support Forum

OLinuXino Android / Linux boards and System On Modules => A13 => Topic started by: vaishali on May 11, 2013, 12:34:07 PM

Title: how to increase brightness of lcd ts 7" in official debian image in a13wifi
Post by: vaishali on May 11, 2013, 12:34:07 PM
hi everyone,

I have a13 wifi olinuxino connected with 7" lcd ts.
And in sd card i have official debian with gui.
Can I increase the brightness of my lcd (lcd is the olimex 7" ts lcd).
Is there anyway to control lcd brightness?
Do i need to do any changes in hardware or in software.


Thanks in advance.   
Title: Re: how to increase brightness of lcd ts 7" in official debian image in a13wifi
Post by: vaishali on May 11, 2013, 02:54:42 PM
i have tried the below command

# xbacklight -set 50

but am getting the following error

NO outputs have backlight property

i have tried the below command
# xrandr --output default --brightness 0.4

but am getting below mentioned error

xrandr: Gamma size is 0.

how should i set my brightness ? i am not getting this thing.
please help
Title: Re: how to increase brightness of lcd ts 7" in official debian image in a13wifi
Post by: vaishali on May 11, 2013, 03:57:10 PM
hello olimex ,

please help me with this.
Is there anyway to increase brightness of lcd.
For my application i need it to be bright.
the current brightness is not that good so please tell me how should i increase it.
Title: Re: how to increase brightness of lcd ts 7" in official debian image in a13wifi
Post by: JohnS on May 11, 2013, 04:25:05 PM
You won't like this but it's the weekend so they may not be at work!  3 posts is a bit much maybe.

I'm sure you already know they are fundamentally a hardware maker but you ask a generic software question so expecting them to know the answer is optimistic to put it mildly...

John
Title: Re: how to increase brightness of lcd ts 7" in official debian image in a13wifi
Post by: vaishali on May 14, 2013, 08:27:12 AM
hi olimex ,

i hope the weekend is over now, so can you please help me with this.
Title: Re: how to increase brightness of lcd ts 7" in official debian image in a13wifi
Post by: BJFreeman on May 14, 2013, 11:39:05 AM
for a direct reply mailto support@olimex.com
Title: Re: how to increase brightness of lcd ts 7" in official debian image in a13wifi
Post by: vaishali on May 14, 2013, 03:10:24 PM
hi BJFreeman,
thanx for the reply.