Date: Thu, 11 Oct 2001 16:21:08 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: [LIB] Re: [LIBRETTO] Re: Nuts and bolts of impoving LCD brightness
>>>No, I think you might find it easiest to physically remove the >>>wires...though there may be a bios call that kills the power - come to >>>think of it, there must be... >> >>That probably should have read, "come to think of it, there SHOULD be..." >>huh Neil! > >Nah, I reckon there must be - the screen is controllable for brightness through a >bios call and it can be turned right off - presumably by the same call. (which linux >doesn't know about - when it blanks the screen it doesn't turn off the lamp). > >What I don't know is whether there are separate calls to control the brightness and >'offness' of the lamp, or whether power is killed to the screen in toto (as the lid >switch does) Umm ... why would a laptop normally need to kill the lamp WITHOUT killing the LCD itself? As far as I'm aware, newer laptops (ie. newer than 6 or 7 years) only have 4 or 5 brightnesses for the bulb (so it can tweak the circuitry for best efficiency at those levels, its harder to tweak it if the settings are incremental) with the lowest one being the bulb off. Under normal situations, this will also result in the LCD being turned off (no reason keeping it on otherwise) Therefore it wouldn't surprise me at all if the was no separate call to do that. Blanking the LCD itself without turning the bulb off is easy - just display a screen of 'black'. - Raymond ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
