Hi Yes I have the same thing, the slider does not seem to do anything. Changing the PWM value with the echo does however. Yes I have backlight.10 also, maybe with older releases it was .11, I am not sure.
For interests sake, where would I find the place where the PWM for the backlight is controlled from? I would like to find out how to change the PWM frequency. I believe it is currently set at 2Khz. Is this possible to change to 1Khz for example? If so, could someone point me to where I need to look? I have run Android 4.2.2 successfully and checked the PWM frequency on that too, and that is also 2Khz. Regards Terry On Saturday, 14 September 2013 05:18:42 UTC+12, [email protected] wrote: > > I just installed latest (Angstrom 3.8.13 June 18) from > http://beagleboard.org/latest-images/ and have 'backlight.10' in > /sys/class/backlight. I can echo values to > /sys/class/backlight/backlight.10/brightness successfully - but the GUI > slider has no effect. I can slide it, but nothing happens. > How can I troubleshoot this issue? I'm not sure where to find error > messages - nothing shows up in dmesg. Do I need a serial cable for this? > Why does everyone else have backlight.11 when I have backlight.10? > I tried to make a symlink called backlight.11 but it wouldn't let me - > even if I tried putting it in /devices/../.. > > My hardware is BBB Rev A5C with LCD screen 4DCAPE-43T Rev 1.11 > > Thanks Koen! > > On Wednesday, May 29, 2013 5:20:58 AM UTC-4, Koen Kooi wrote: > >> Ehm, it has had backlight control ever since LCD4 support was added. I >> have an LCD4 plugged into a BBB and it shows a /sys/class/backlight/ and >> has a slider in the GUI. >> > -- 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.
