[Gta04-owner] new lxde image: how does screen blanking work?

Dr. H. Nikolaus Schaller hns at goldelico.com
Tue May 21 09:49:11 CEST 2013


Am 19.05.2013 um 03:21 schrieb arne anka:

>> What you see above is the controlling of the LCD driver and electronics within the LCD module.
>>> and the screen turns ... white.
>> It does not automatically turn off backlight - this is why you see a white screen.
> ok, new question: who is actually responsible for the blanking?
> with the old kernel i was able to get  a workaround with xscreensaver and xscreensaver-command -watch.
> but now, xscreensaver never fires, and thus xscreensaver-command -watch never gets to execute the script i wrote.
> when manually activating xscreensaver, it blanks as expected, but when only configuring it to trigger after 1min, screen goes white and, as said, xscreensaver never fires its BLANK event (and tapping the screen to unblank not UNBLANK).
> so: who does that blanking?

I think it is a timeout somewhere in the DSS subsystem. Or maybe it is a config of the ARM X11?
And that the screen is going white must be a bug in the kernel.

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