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
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
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
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 Duehrdenverpilot@me.com To: CentOS mailing listcentos@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
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
On 04/09/12 6:09 PM, Jeff Cen wrote:
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?
I'm not sure what 'a box sitting away from me' means. the light sensor would be a feature of the LCD monitor, not the computer system (unless youre talking about a laptop where its all integrated).
shine a bright flashlight at and around the monitor, including down from the top, does the screen brightness change?
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allan -
Jeff Cen -
John R Pierce -
Nate Duehr