peter wrote: > On Mon, Nov 21, 2011 at 3:33 PM, Simon Schampijer <si...@schampijer.de> > wrote: > > El 21/11/11 15:18, Paul Fox escribió: > >> > >> simon wrote: > >> > Hi, > >> > > >> > I would like to propose the following Feature to enhance the Sugar > >> > learning environment: > >> > > >> > "Add a frame device to control the display. The idea is to add their > >> an > >> > option to change the brightness and to take a screenshot. Both actions > >> > are only available via the keyboard as of today." [1] > >> > >> oh, good idea. in fact, i have another job for it to do. :-) > >> it would be great if it could switch the display from color to > >> monochrome, as well. see my email on automatic backlight control, > >> which i've composed but haven't sent yet. i'll do so right now. > >> > >> paul > > > > Hi Paul, > > > > I just looked at olpc-kbdshim the olpc-brightness for how we adjust the > > brightness on the XO. Looks like we simply echo the values to the files > > like > > '/sys/class/backlight/dcon-bl/brightness'. I wonder what the generic > > solution is for that (Sugar on other devices). > > > > From a quick test, I have the following files on my T61: > > /sys/class/backlight/intel_backlight/max_brightness and > > /sys/class/backlight/intel_backlight/actual_brightness which change > > accordingly when adjusting the brightness. But I guess there is a generic > > tool for doing that...? > > > > /me should probably have a look what GNOME is doing... > > There's recently been introduced a generic backlight class so I think > its all being converted over to that. Its like the IBM one in > /sys/class/backlight but I'm not sure the full details for > manipulating it programaticly but I'm sure its documented somewhere. > > Some details are: > https://lwn.net/Articles/423170/ > https://wiki.kubuntu.org/Kernel/Debugging/Backlight
we seem to implement anything mentioned in those two links. i wouldn't be surprised if there was a more recent higher level interface that might be useful. paul =--------------------- paul fox, p...@laptop.org
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