On Tue, Jun 8, 2010 at 2:04 AM, patrick keshishian <pkesh...@gmail.com>wrote:
> On Mon, Jun 7, 2010 at 11:08 PM, Buck Pyland <b...@buckpyland.com> wrote: > > Related to what you mentioned, I found another wsconsctl setting, > > display.backlight. It apparently accepts a value from 0 to 100 with a > value > > of 0 to 99 treated as 0. Setting it to 0 causes the same effect I have > been > > getting with the screen blanker in wscons and X. Setting it to 100 puts > it > > back to normal. > > This is more for my own curiosity sake. I hope you don't mind. > > I have an ibook g4, and for me display.backlight settings 0-99 turn > the back-light completely off, and 100 turns it on. It seems to behave > like an on/off switch but with many values for the "off" setting. > > If I'm reading your posts correctly, you are saying your ibook's > back-light never goes off, but rather has two levels of on: "normal" > (display.backlight=100) and "full on" (display.backlight=0..99)? > Well, I actually have a PowerBook G4 Titanium colloquially known as a TiBook, but otherwise you're correct. If you set display.backlight to any value from 0 to 99, it shows in wsconsctl as 0. Setting it to 100, or higher, actually sets it to 100. > If I've read you correctly, are you able to adjust display.brightness > while in the "full on" position, and does it have any effect on the > brightness? > No, setting display.brightness has no visible effect while display.backlight = 0. As an aside, setting display.brightness to 0 does not make the display totally black. The display is dim, but still visible. I don't know for certain if you can still get screen burn-in when it's like that, but I believe it's unlikely. I'd like to find a utility, or write my own, to completely erase the screen until you press a key. I know you can just send the terminal escape sequence to move the cursor to home and clear to the end of the screen, but I'd still need to turn the cursor off or something to get the same results. I'll work on it when I get time. ... and if I've misread you, just ignore this post :) > Not at all. Buck
