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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 05-03-2007, 07:53 PM   #1
BCarey
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Registered: Oct 2005
Location: New Mexico
Distribution: Slackware
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Screen dims when it should brighten and brightens when it should dim


Hi,

I have a hp zv5000. On all kernels I have used on this computer, the screen brightness seems to be "backwards" in regard to the power supply. When I unplug the AC adapter, the screen brightens, when I plug in the AC adapter the screen dims. Does anyone have any idea how to change this?

Thanks,
Brian
 
Old 05-06-2007, 12:40 AM   #2
kanwar_rajan
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Registered: Aug 2003
Location: New Delhi, India
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it seems the problem is either with the acpi device drivers or the power-save-settings (if acpi is correctly detecting the hardware)...

can you find the powersave settings in kde... if they are available then this means that acpi is correctly detecting the hardware...then just check is these settings are correctly configured....

if u cant configure powersave settings..then this means that acpi is not correctly configured...

use modprobe to insert the acpi modules and try again..

let me know if this helps..

regards,
rajan
 
Old 05-06-2007, 10:12 AM   #3
BCarey
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Hi,

All the powersave options are available to me. (BTW, I use gnome).

Brian
 
Old 05-06-2007, 10:07 PM   #4
samstar
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Registered: Apr 2007
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Hi,

This worked on my laptop, see if it works with yours.

Manually adjust your screen brightness while the laptop is plugged in. Then unplug it. After the screen brightness changes, manually adjust the brightness to what you want it to be when running on batteries.

These brightness levels should now be used as defaults whenever the laptop changes to battery and back to ac power.

Hope this helps,
Sam
 
Old 05-07-2007, 09:31 PM   #5
BCarey
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Thank you, samstar. All okay here now.

Brian
 
  


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