Thanks John, I will look deeper into this.I have actually just switched over to debian OS and will test.
One test I did do today was to write a zero '0' to brightness by executing "echo 0 > /sys/class/backlight/backlight.11/brightness" This did reduce the brightness but didn't take it to zero light but does dim the display. Likewise a 50 is brighter and 100 is brightest. I am not sure if this is related in any way at all but will look more tomorrow. Cheers and thanks Colin On May 26, 2014, at 8:03 PM, John Syn <[email protected]> wrote: > > From: Colin Bester <[email protected]> > Reply-To: <[email protected]> > Date: Monday, May 26, 2014 at 4:54 PM > To: <[email protected]> > Subject: Re: [beagleboard] BBB LCD3 Cape and inactivity > >> Was wondering if you have come up with any further solution? I can write '0' >> to backlight brightness but while this dims the display significantly it >> doesn't switch if off. > Have you checked that EHRPWM1A is low when you dim the display? Here are two > files that will control the backlight. > > /driver/video/backlight/pwm_bl.c > /driver/pwm/pwm-tiehrpwm.c > > Regards > John >> >> >> On Thursday, December 19, 2013 3:07:52 PM UTC-6, Daniel Metcalf wrote: >>> Yes, I have experienced it and am still working on a solution. >>> Dan >>> On Dec 19, 2013 11:03 AM, "Colin Bester" <[email protected]> wrote: >>>> I have a beaglebone black with lcd3 cape installed and all appears find on >>>> startup. >>>> >>>> After a while of inactivity, the displays appears to go into some form of >>>> sleep or screen saver mode but backlight stays on. i.e., The normal GDM >>>> screen with background and icons switches to an all white display (just >>>> backlight). >>>> >>>> Is anyone else experiencing this? >>>> >>>> I would expect the backlight to switch off as well. >>>> >>>> Cheers >>>> Colin >>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google Groups >>>> "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected]. >>>> For more options, visit https://groups.google.com/groups/opt_out. >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the Google > Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/d_6HC6ps2RU/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. Internet Disclaimer _________________ This message (including any attachments) contains confidential information intended for a specific individual and purpose, and may be protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this message, or the taking of any action based on it, is strictly prohibited. _________________ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
