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Author Topic: Turn off LCD backlight  (Read 1291 times)

Offline PeterP

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Turn off LCD backlight
« on: April 24, 2017, 03:28:29 pm »
I installed SparkyLinux 4.5.2 i686-lxde on my aging laptop last week, and am generally delighted with it. However (there's always a "however") I'd like to know if there is some setting that can turn off the LCD backlight after a timeout. I know that I can do this with an xset command in any of several files, but it would be preferable to use something in the desktop menus if the option exists.
Thanks!
PeterP

Offline PeterP

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Re: Turn off LCD backlight
« Reply #1 on: April 27, 2017, 05:39:40 pm »
Duh. Suitable options are on the "Advanced" tab of the screensaver.

--- Peter

Offline TamiDuke

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Re: Turn off LCD backlight
« Reply #2 on: January 10, 2019, 07:16:51 pm »
As per my knowledge you'll need to rebuild the kernel with sysfs and then mount this file system.  If you want to access this directly, without sysfs, you'll need to write some code that changes the state of the GPIO line that handles the backlight.  This is line 4 on gpio bank G, so the call from the kernel would be.
« Last Edit: January 24, 2019, 11:47:38 pm by TamiDuke »