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Old 04-10-2012, 01:09 AM
Jeff Cen
 
Default screen brightness changes depending on which application is run

Hi Nate,

Thank you for the reply.* My machine is a box sitting away from me and doesn't have a ambient light sensor.*


Can the problem be gnome or the LCD monitor related?



Jeff



________________________________
From: Nate Duehr <denverpilot@me.com>
To: CentOS mailing list <centos@centos.org>
Sent: Monday, April 9, 2012 3:07 PM
Subject: Re: [CentOS] screen brightness changes depending on which application is run

On Apr 8, 2012, at 12:18 PM, Jeff Cen wrote:

> Hi,
>
> I found my LCD screen brightness increase when I use firefox and other white background editors and screen brightness decrease when I use dark background applications, such as terminals with black background .* The change in screen brightness depending on the applications has been annoying.
>
>
> My centos version is ver 5.7 64 bit.* Has anyone seen a similar problem or have a solution for that?* Thanks in advance.
>
> Jeff

Jeff,

Does your machine have an ambient light sensor?*

Light from the monitor, reflecting off of you, will often trigger changes in the amount of light the ambient light sensor is seeing.

Happens most with large changes like switching from a bright white (browser) background to a dark one, just as you describe in your symptoms.

Nate
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Old 04-12-2012, 05:29 AM
allan
 
Default screen brightness changes depending on which application is run

Is your monitor an LED type? It could have dynamic brightness. My tv does the same thing - also annoying.

-Allan

On 04/09/2012 07:09 PM, Jeff Cen wrote:
> Hi Nate,
>
> Thank you for the reply. My machine is a box sitting away from me and doesn't have a ambient light sensor.
>
>
> Can the problem be gnome or the LCD monitor related?
>
>
>
> Jeff
>
>
>
> ________________________________
> From: Nate Duehr<denverpilot@me.com>
> To: CentOS mailing list<centos@centos.org>
> Sent: Monday, April 9, 2012 3:07 PM
> Subject: Re: [CentOS] screen brightness changes depending on which application is run
>
> On Apr 8, 2012, at 12:18 PM, Jeff Cen wrote:
>
>> Hi,
>>
>> I found my LCD screen brightness increase when I use firefox and other white background editors and screen brightness decrease when I use dark background applications, such as terminals with black background . The change in screen brightness depending on the applications has been annoying.
>>
>>
>> My centos version is ver 5.7 64 bit. Has anyone seen a similar problem or have a solution for that? Thanks in advance.
>>
>> Jeff
>
> Jeff,
>
> Does your machine have an ambient light sensor?
>
> Light from the monitor, reflecting off of you, will often trigger changes in the amount of light the ambient light sensor is seeing.
>
> Happens most with large changes like switching from a bright white (browser) background to a dark one, just as you describe in your symptoms.
>
> Nate
> _______________________________________________
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
> _______________________________________________
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
>
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Old 04-12-2012, 05:05 PM
Nate Duehr
 
Default screen brightness changes depending on which application is run

On Apr 11, 2012, at 11:29 PM, allan wrote:

> Is your monitor an LED type? It could have dynamic brightness. My tv does the same thing - also annoying.

I have also seen that "feature" on an HP monitor with LED backlight. I believe it was a feature one could turn off in the monitor's built-in OSD menu.

Nate
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