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annoying macbook 30 second auto dimming help

H

hvatsun

macrumors newbie
Original poster
Aug 3, 2006
7
0
hey there. I HATE that dimming of the screen that the macbook does once it is idle after about thirty seconds. It really disrupts watching videos online, and i can not figure out how to turn it off. can anyone help me? thanks!
 
After looking into this a few weeks ago, I found posts that described this as a bug in the OS. Even if you've disabled auto dimming in the power settings, it will occur the next time you reboot. The only way to fix this is to go into the power settings, check the box for auto dimming and then uncheck it. You'll need to do this each time you reboot.
 
Smoothie said:
After looking into this a few weeks ago, I found posts that described this as a bug in the OS. Even if you've disabled auto dimming in the power settings, it will occur the next time you reboot. The only way to fix this is to go into the power settings, check the box for auto dimming and then uncheck it. You'll need to do this each time you reboot.
Click to expand...

I disagree with this. As this only happens to me when I'm on battery only. And even then I can simply go check the box in the Energy Savings. Of course I am only one man in a sea of inevitable exceptions.
 
Smoothie said:
After looking into this a few weeks ago, I found posts that described this as a bug in the OS. Even if you've disabled auto dimming in the power settings, it will occur the next time you reboot. The only way to fix this is to go into the power settings, check the box for auto dimming and then uncheck it. You'll need to do this each time you reboot.
Click to expand...

Are you sure?

*checks power settings*

Nope, not true. Never happens for me.
 
There's a little trick you have to do in Terminal: If you type pmset -g disk, you'll see that halfdim is set to 1 for both battery and AC power. Now, to disable the dimming, type sudo pmset -a halfdim 0 and type your password to disable the display dim. The -a (all) says to apply it across the board, -b is for battery, and -c is for charger (AC adapter).
 
To add to my previous post, that Terminal command works restart after restart. Just type it and forget it, and your display isn't gonna dim.
 
Zephead's answer worked to perfection. I didn't set set everything to 0, just the charger. Thanks mang.
 
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