Brightness changes

Hi All,
I just wanted to know that is the screen brightness suppose to change everytime when you plug or unplug the pwr adaptor...
can someone please confirm? thanks

It's a feature to save battery power. You can turn it off from Energy Saver.

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X230 display brightness changes automatically

Hi,
I have a problem when I'm using my X230 from battery: every know and then the display brightness changes, it gets lower (even without any user activity). Also it seems that the color profile also changes, colors look washed out. After few minutes or sometimes seconds, it goes back to normal. However, I have this issue quite often.
Is there a solution? Is it something to do with my power settings?
Thank you.
Solved!
Go to Solution.

zombyorc,
Try the following.
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/Disabling-Auto-Screen-brightness-on-Intel-HD-G...
or
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T410-screen-brightness-dims-washes-out-on-b...
*Non Lenovo employee*
I have a Y2P (i5) ... Feel free to ping me if you want me to test some applications with your Y2P if you have the same model. I don't mind keep doing recovery on it if needed .... =)

MBP 2011 Screen brightness changing regardless of the ambient light

As stated in the subject my brand new MBP 2011 screen brightness changes on its own, yes i know about the ambient light sensor, but my screen is going from med brightness all the way to minimum brightness even though the ambient light is constant. yes I know i can turn it off, but why build in an ambient light feature that just makes the screen go to mimimum brightness when in a well lit room??
or do i have a faulty one??

I too have this problem on my spanking new MacBook Pro. Called AppleCare and they said they weren't aware of this issue.
Meanwhile, this is my 1st mac. Had it for a few weeks now. Decided to open iTunes for the 1st time. The whole MacBook Freezes, no mouse interactivity, reboot required. This happens EVERY time I start iTunes which I no longer do. Apparently it's a known issue which Apple has patched(unsuccessfully). But hey c'mon, I mean iTunes? This is one of the core apps which SHOULD be tested extensively against the hardware. When you consider Apple PROVIDES the hardware, this is simply unacceptable. Unbelievable even. I simply can't believe how poor this is from a major company. But hey my MacBook Pro LOOKS GOOD right, so who cares if it's a technically malfunctioning piece of junk.
Here's my theory. Is part of Apple's patch deliberately reducing screen brightness without user authorisation when the MacBook starts to overheat, all because they know they've been incompetent/negligent with their QA testing and the hardware can't handle the software? If so, why have users not been informed?
I'm from Australia and we have this so-so comedian called Chris Lily who fans have taken to calling a genius, the joke amongst non-fans being the word genius has been dumbed down over the years to be almost meaningless. Anyway, maybe a certified Apple 'genius' can explain the reasoning for the apparently deliberate brightness reductions?

HP 15-d103tx Notebook screen brightness changes

My new HP 15-d103tx Notebook's screen brightness changes its own. Pls suggest a solution for the same.
jspnes

Hi jspnes,
Welcome to the HP Support Forums!
I understand that computer's display screen randomly changes the brightness. I will try my best to help you with this.
I suggest following the steps in this document for Resolving Problems with the Brightness of the Display.
If this does not resolve the issue, could you please tell me what operating system you are running on the Notebook.
I hope this helps, please let me know if this resolved your issue.
Good luck and have an awesome day!
I worked on behalf of HP.

Screen brightness changes without me doing it

I just bought a refurbished HP Pavilion TS Sleekbook 15. I am loving it except the screen brightness changes without me doing anything and it is driving me crazy!! It dims and brightens sometimes when I click on something and other times for no apparent reason. Any help would be greatly appreciated.
This question was solved.
View Solution.

Hi Angeliize, and welcome to the HP Support Forums!
I understand that you are having a problem with the display screen brightness dimming without you changing it. I will try my best to help you with this issue. To better assist you, could you please tell me the whole model number of your computer and the operating system that is running on it. Here are some guides for How Do I Find My Model Number or Product Number? and Which Windows operating system am I running?
The dimming could be related to the power settings on your Sleekbook. Here is a document for Disable Auto-Dimming of the Screen on Your HP Laptop that has steps for changing the dimming settings.
I hope this information helps, please let me know how it goes.
Good luck and have a great day!
I worked on behalf of HP.

Xperia z1 compact screen brightness change itself even auto brightness is disable.

xperia z1 compact brightness change itslef even when i have turned off the auto brightness. for example, the brightness becomes dimmer when the overall display colour is dark or black colour and it becomes brighter when the ovrall display colour is white or bright colour. i mean im able to notice there is a slight change in display brightness when im viewing photo, watching videos or surfing inernet. the brightness just change itself even when i turn off the auto brightness.

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.
This sounds like the optimized backlight that the phone uses. See the following topic for more information:
http://talk.sonymobile.com/t5/Xperia-Z1-Z1s/Last-page-of-the-app-drawer-is-dimmer/m-p/682661#M25753
What are your thoughts about this forum? Let us know by doing this short survey.

Screen brightness changes on its own

My laptop screen brightened all of a sudden on its own, 1/3 - 1/2 EV. I was editing a photo in PSCS3 when this occurred, the photo was from Lightroom. The brightness change effected everything, not just PS. For the past several days I've been editing photos in LR & thought I had the tone adjusted pretty good on all the photos. Today when I looked at the photos again, I felt like I needed to brighten then up some. After making exposure/brightness/tonecurve adj. to the photos today, I needed to do editing in PS, and as I was editing, the screen made a brightness change. I recalibrated the monitor & the brightness stayed the same. How could the previous monitor profile be turned off & all of a sudden turn itself back on. Windows Vista on Sony Vaio laptop (yeah I know I need something besides a laptop screen to edit photos). This probably has nothing to do with PS but I thought I would try on this forum as it's usually very helpful. Perhaps you can suggest another forum that might help. Thanks!

Sometimes a power management scheme will kick in on a laptop and change the monitor brightness. When editing you should always work with external power connected and all settings set at Never for that state.
And, if you're serious, get a good monitor!

HT4623 After loading the feed system IOS 6 appeared i have a problem in the brightness change?? How Refer fix

After loading the feed system IOS 6 appeared i have a problem in the brightness change?? How Refer fix ??
I Have Iphone 4s new

What feed system?
What brightness change?
Maybe it would be easier to communicate what the problem is by posting in your native language.

Why does LR4 show brightness changes after external processing in CS4?

I am an experienced user of Lightroom and get excellent results. But an anomaly is puzzling me. I capture images in DNG format and download to a PC Windows 7 using a calibrated Eizo graphics monitor. Before exporting and delivering a processed image I ensure that there is no unacceptable clipping showing on the histogram. I export 16 bit files which are only converted to 8 bits immediately prior to delivery. Recently I have adopted the procedure of importing a copy of the final delivery image back into LR4.3 for better library management. (There are often keyword changes or other refinements in the delivered image) Occasionally I notice that some pictures are noticeably brighter than the existing LR processed masters which formed the basis of the above operation. So I did some tests.
I selected an image with wide tonal range, adjusted it in Develop module to meet my 'no unacceptable clipping' rule and exported it as described above into CS4. My working colour space is Adobe RGB 1998 and Color Management is set to 'RGB Preserve Embedded Profiles'. In CS4 I only changed the mode from 16 to 8 bits and then saved the file using a modified name. That was the only processing done in CS4. Both files (8 bit and 16 bit) were then re-imported back into LR4 and the histograms compared with the original modified master file. In both cases they showed highlight clipping indicating that the image is brighter than when starting the final processing in CS4. In most cases the extra brightness is not a big problem; but in some instances it is quite unaccepable and I could not use that version without further processing in LR4. Mode change does not seem to be the culprit.
Can anyone help me to understand what I might be doing wrong to bring about these unwanted involuntary changes to normally processed files? Thank you.

What colorspace do you have configured in LR for your TIF Edit-In export to PS? Since PS is out-of-date with respect to LR, presumably you are using the Edit with LR Adjustments option not the Open Anyway option.
What happens if you don’t change to 8-bits in PS?
What happens if you merely export the TIF from LR and re-import it? With variations being: if the Export bit depth is 8 bits vs 16 bits and if the Export colorspace is ProPhotoRGB vs AdobeRGB?
Do you somehow have lens-profile corrections set as the default for TIF Imports or any non-zero Toning being applied on Import? The LR defaults for TIFs can be set independently from the defaults for raws.
What happens if you use ProPhotoRGB in your Edit-In export settings and as your working space in PS?
What happens to the histogram if you soft-proof to Adobe RGB in LR?
Is your monitor calibrated with a hardware calibrator? If so is the profile ICC V2 or ICC V4?

[Solved]Brightness changing by itself / Samsung brightness

Hello friends,
I have a rather strange issue with my laptop (Samsung NP300V5Z). GNOME or KDE, no difference at all, so I presume it's kernel/hardware related. My brightness maxes out when:
1. In KDE, when I click on the battery widget in systray (which is a known KDE bug) OR totally random.
2. In GNOME 3, totally random.
Using laptop-mode-tools helps a bit, because I choose it over KDE's powerdevil, so the bug is not so visible. One other thing worth mentioning. My Fn keys for brightness work half-way; they will only decrease/increase brightness by 1 (out of 7 max). Sound, wlan, touchpad Fn keys work without problem.
I will provide whatever info you might need.
Arch x64 latest, KDE 4.8, Gnome 3.2.1 kernel 3.2.2-1
Last edited by NekySerbia (2012-03-06 18:32:22)

Something happened and brightness is doing fine now, changing when I want it (except for a known KDE bug). One more thing still bothers me; my hotkeys for brightness are not working.
I opened xev and pressed the combinations, here is the output:
KeyPress event, serial 40, synthetic NO, window 0x1c00001,
root 0xac, subw 0x1c00002, time 470989, (55,54), root:(57,436),
state 0x10, keycode 232 (keysym 0x1008ff03, XF86MonBrightnessDown), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 40, synthetic NO, window 0x1c00001,
root 0xac, subw 0x1c00002, time 470989, (55,54), root:(57,436),
state 0x10, keycode 232 (keysym 0x1008ff03, XF86MonBrightnessDown), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
KeyPress event, serial 40, synthetic NO, window 0x1c00001,
root 0xac, subw 0x1c00002, time 476305, (55,54), root:(57,436),
state 0x10, keycode 233 (keysym 0x1008ff02, XF86MonBrightnessUp), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 40, synthetic NO, window 0x1c00001,
root 0xac, subw 0x1c00002, time 476305, (55,54), root:(57,436),
state 0x10, keycode 233 (keysym 0x1008ff02, XF86MonBrightnessUp), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
but nothing happens ;( What can I do to fix this? I can check my brightness level by
cat /sys/class/backlight/acpi_video1/brightness
. There is also 'acpi_video0' but it does nothing.

Brightness change after 10.5.8 update

Is it my imagination or did 10.5.8 change the display brightness? On my early 2006 20" core duo iMac I had to crank the screen brightness down to almost the bottom setting to get what I think I had before. Wonder if anyone else feels there was a change.

My Imac 'august 2007', also changed to full brightness.
However I am not able to lower the brightness.... well I can but after a reboot all is back to full brightness.
This is already causing me headaches as I am a professional photographer and was happy with the fact that all was calibrated well (I do this every 4 weeks).
However If I can't restore the brightness back to its lowest position, my calibration is way off!!! and recalibrating doesn't make sense this way!

Image Brightness Changes When Authoring DVDs

Hello,
To encode footage I export 720 24p footage from FCP as a Quicktime .mov using Microcosm then encode in Compressor using the standard Best Quality, 16:9, SD setting. The Quicktime .mov and the encoded .m2v file plays with the same image brightness and contrast as does the original footage in the FCP timeline, but once I author it in Studio Pro it consistenly looks lighter and consequently washed out when played back on the same monitor from the DVD. It also ends up looking lighter when played on a TV than programs from a typical rental DVD movie.
I set up my 23" Cine display carefully with with Apple's advanced profiling software, and images and color bars match footage displayed on my Sony PVM-14M that has been set up with color bars through a decklink card.
Can anyone offer advice about why this may be happening? So far my only fix is to arbitrarely change image brightness when encoding with Compressor. Is there some change I should be making in FCP to go from 720 24p HD footage to SD encodes?
Thanks,
Drew Harty
G5 dual 1.8 Mac OS X (10.4.9)

I have read on various forums that people are getting better encodes from HD footage by exporting to a Quicktime file before encoding. Several people have complained about the results exporting directly to Compressor. I take it you haven't found this to be a problem?
Drew

Pavilion X2 10 (10-020nr) Brightness changed itself.

Dear;
Recently I bought Pavilion X2 10, but I experienced annoied screen behavior.
On battery and 50% brightness, when I move cursor (touch pad or mouse), screen brightness go up itself. (I feel almost 10% up). And after play video and close video, same brightness up happen.
When I use on power, on battery with maximum brightness or minimum brightness, it is not happen.
How can I fix this ?
I tried 'off' for Enable Adaptive Brightness, but not helped.
Thank you in advance.

Hi @Ssendol
Thank you for your reply.
I understand that when you reset the OS there is no brightness problem. Once you install all the Windows updates the problem returns.
I suggest you reset the OS again and then install the Windows updates manually one by one until the problem returns. Once you have determined which update is causing the issue unistall it and then do not reinstall.
To install updates manually.
Make sure your PC is plugged in and connected to the Internet using a non-metered connection. Don’t disconnect, unplug, or turn off your PC while the update is being installed.
Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings.
(If you're using a mouse, point to the lower-right corner of the screen, move the mouse pointer up,click Settings, and then click Change PC settings.)
Tap or click Update and recovery, and then tap or click Windows Update.
Tap or click Check now.
If updates are found, tap or click View details.
In the list of updates, select each update , and then tap or click Install.
If you're prompted for an administrator password or confirmation, enter the password or provide confirmation.
After the installation is complete, restart your PC and sign in.
Here is a link from Windows.microsoft.com Turn automatic updating on or off to assist you.
Good Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Screen brightness changes between standbys

I just received my new Macbol Pro C2D after realizing that the Macbook, just didn't have enough graphic power. And the quality of the screen was suspect, considering all f the ghosting.
But I noticed that when I start up my macbook from a sleep, the brightness often changes. The only thing i can hope it is is that the laptop is trying to be helpful by adjusting it's brightness to suit the the current envionment; because it has to have a light sensor because of the keyboard black light. But I would rather it didn't do it. Or is my laptop just broken?

This is usual behaviour and is drriven by the ambient light sensor. You can turn this behaviour off in the Displays System Preference.

Why brightness changes when subtitles appear?

Good evening, I’d like to ask for advice about a problem I found on iTunes running on Mavericks. I convert a video content (using handbrake) adding subtitles from .srt file. When I watch that movie, if (and onlu when) subtitles appear, picture brightness becomes clearer. The same file opened using VLC has no problem. My mac mini (latest generation entry-level) is connected via HDMI to a LCD TV. Searching the net I found nothing, does anyone have an idea on how to fix it? Thanks!

I am experiencing the same issue and it seems to be indeed a problem caused solely by iTunes as I only see this issue with movies (rented from the iTunes store and) played back with iTunes. Streaming videos in Safari (e.g. Netflix) and activating subtitles doesn't show the brightness adjustment issues.
It's really annoying as dark movie scenes become almost unwatchable as the brightness level changes all the time. I hope that Apple will fix this issue in the next release of iTunes or Mavericks whichever is causing this issue. In the meantime, I will look for alternative movie players. I'll give VLC a try, but wonder if it can play back movies rented from the iTunes store.

Screen Contrast Too Bright - Changed Itself

My mother-in-laws AIO computer monitor is too bright. The contrast changed automatically. No updates were done. I ran diagnostics, changed monitor settings, reset defaults. Nothing is changing the end result. Is the monitor just dying? It's an all-in-one. It is less than three years old and not used very hard. What else can I try to troubleshoot? I was going to hook up a second monitor, but b/c it is a AIO I don't believe it has a cable to plug in a 2nd monitor.

This is weird. All I did was squeeze the case near just at the top of the LCD display and the lit screen SUDDENLY had the written display again. As I said the ipod worked but I did not have a written display. With that little trick the ipod returned to normal. About a week later , the ipod had a relapse and squeezing the case dont remembe whether it was the left or right side, brought it back to life and it has behaved itself for the past 3 months. I hope this information is useful to others with the same problem who do exist.
Ted

Brightness changes

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