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Unusual screen problem with Acer Aspire 8920G


Yaroslav Y. Mikhailin

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Hello, I have an unusual problem with practically all of the nvidia drivers (from 175.19 up to 177.79) in windows xp x86 on my Acer Aspire 8920G - after plugging/unplugging the computer from AC, screen brightness is set to its minimum :) . Also the smartdimmer is not working - always! So playing with tweaks in .inf file doesn't have any result in resolving this problem. But without any video driver in my system this problem is out - screen brightness doesn't depend anymore from manipulation with AC cord. Power plan is set to "Always On".

Yaroslav.

P. S. The same problem is in Windows XP x64 too.

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Problem? That's very normal. It's a mechanism designed to prolong battery life and an effective one at that. What you must do is (in vista) click or right click on the battery icon on the bottom of your screen when the power options menu appears click advanced power settings and select the screen brightness tab (or something to that effect). Then open it by clicking on the plus and change the battery value to 100%. Then you should no longer experience this.

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But if I adjust brightness, while working on batteries, and after connect AC plug, the screen brightness will be set to its minimum - it's vice versa to normal behavior and very very strange. Also XP doesn't provide any tool for controlling screen brightness.

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looks like a driver' problem. However you say that you have tried many drivers. It looks like a easily solvable prob. I just need some time to think.

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Yes, it's fully driver related, because in Vista everything is ok, except Avid Media Composer 2.8, that's why I downgraded to XP and "fighting" with nvidia a whole week :) .

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you may also want to look at the BIOS. Often it will be set to go to minimum brightness when the power is unpluged.

Go into it at boot up and change the options.

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  • 3 weeks later...
Yes, it's fully driver related, because in Vista everything is ok, except Avid Media Composer 2.8, that's why I downgraded to XP and "fighting" with nvidia a whole week :) .

My friend is having the exact same problem, I downgraded to XP for him and I can't figure out why the screen does that. If it's a driver problem we're pretty much screwed cause I could only find 1 forceware driver for the Geforce 9500M GS on XP. Also, the touch panel volume controls stopped working ever since I installed XP.... that laptop is not fully compatible with windows XP no matter how hard you try

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  • 4 months later...

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