Display brightness

What is the optimum brightness for my iMac? I had it set to about 80% and I noticed that all my photos were printing so dark so now I've turned it down to about 50% but I will have to redo my photos as now they look really dark. If online is all they were meant for, I wouldn't worry but these are photos for my artwork and I often send images to publishing in books and magazines. I've calibrated the monitor using Spyder 3 Express but isn't that just for color? I wasn't sure if I still need to adjust the brightness manually.

Hi suska,
Please reply us with the exact system model and the video card available on your system so that I can check and assist you further.

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The display brightness on my macbook pro is not working

I just bought a macbook pro in June and the display brightness keys are not working, nor is there a scale I can find in the system preferences to adjust the lighting level across the screen. Why is that and how do I fix it?

Go to System Preferences>Displays. You can adjust brightness there. Also make sure that the "Use all F1, F2, etc. keys as function keys" are unchecked in the Keyboard preferences.

Dimming Display Brightness to Zero

Hello All,
I have been having a problem with the display brightness adjustment for a long time. Basically, the display of my 17" 1GHz G4 cannot be dimmed to black. From the System Preferences the display brightness can be lowered with the slider. In the final third however dragging the slider further to the left not only does not reduce the brightness it actually slightly increase it, and the display start to flicker.
Any ideas what could be the cause?

That model doesn't support dimming the display brightness to zero, except through Energy Saver (which may not work with all third party USB devices), or a screen saver that has a picture that shows nothing but black. Some third party hacks dim the display, but they are not necessarily that reliable.
Only Apple's notebook displays dim to full black.

Default Display brightness is too high.

Hi, i am using latest B2G 2.2 [2014-10-08, flame phone]
Default display brightness almost 90%,
Every time i update firmware, i set this value to 10%.
i think this value is too high, it consume more battery.

Hi, my point is default value is too high,
it affect battery life.
user some time forget set this value,
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now, i set this value to 0%
indoor, i can see my flame screen clearly with 0%

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 .... =)

Display brightness control not in Prefs Pane

I'm using an Apple 23" sinema display. The brightness control used to appear in the System Prefs, but it no longer shows up. I unplugged all peripherals, but I can no longer get the slider to appear. Any thoughts?

Display brightness is done via USB. Is the display's USB cable connected to the computer? With older (plasic case) Apple displays, the USB circuitry can fail. This can cause problems with the brightness slider, USB ports on the display, and computer sleep. Unplugging everything from the display for a few minutes may fix it for a while.

Cannot adjust display brightness via F-keys nor Preferences

After updating Mavericks to 10.9.4, I cannot adjust the display brightness. Using the F1-2 keys will show the brightness icon that usually pops up. However, it's stuck and nothing happens when I press either F1 or F2 (the brightness keys).
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How can I fix this problem?
Thank you in advance,
Filip

Hello Gnazty,
Thanks for using Apple Support Communities.
I'd like you to reset your SMC and PRAM as the articles below describe:
OS X Mavericks: Reset your computer’s PRAM
http://support.apple.com/kb/ph14222
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
Take care,
Alex H.

MacBook display brightness will not adjust

My MacBook display brightness is very low level, the F1 and F2 brightness keys bring up the transparent window and show brightness turned all the way down, but F2 does not increase the brightness. In Preferences, the display section shows the Brightness slider all the way to the top, and if I attempt to slide that down it snaps back to the top, and the actual screen brightness does not change from very low. I also have verified that the function keys are NOT set to lock out the brightness function, so pressing command and F1/F2 does nothing. So nothing from previous forums seems to apply! All other function keys operate properly (multi-window, volume, dashboard).

OK guys, think I found a solution to this one.
My girlfriend's mac had the same problem as yours, and I was motivated to fix it becuase I needed to use my mac for my dissertation and she kept stealing it!
anyway, turn the brightness all the way down, press it up once and you will see the screen flash. do it again, really fast up and down up and down and the scree will stay on as long as you keep playing with the buttons.
next, use this temporary fix to get into system preferences -> displays... and change the resolution to something considerably lower. then it stays on permanently. Not too sure about why this happens, maybe the mac can no longer handle that many colours or complexities?
sod it. enjoy.

Is iphone 6 plus display brightness lower compared to iphone 6

My iphone 6 plus display brightness is lower compared to iphone 6 at full brightness is it normal

No.
Apple specifies the same "brightness" for both models...500 cd/m2.
You can read more here:
http://www.displaymate.com/iPhone6_ShootOut.htm

Display brightness setting doesn't stick on power cycle

The display brightness setting doesn't seem to stick during power cycles on my new 13" i7, it almost always sets itself to full brightness when I turn it on. This isn't really a huge deal but it is kind of a nuisance as I typically keep it around half, why should I be turning it back down every time I boot up???.
I have un-checked the box through settings for adjusting brightness based on ambient light, and made sure it is in fact staying un-checked.
I have also reset PRAM a few times now which seems to provide a temporary fix only. After a day or two it's back to square one again.
Any ideas, or is this a bug that there's currently no fix for?

Quote from: zankou on 11-June-13, 23:02:54
Hi, I have recently bought GE60-0ND notebook with Win8 preinstalled which I got rid of in a second I got home, reinstalled with my licensed Win7. Half of things didn't work so I flashed the correct firmware. From that point on everything works perfectly, only brightness control is broken. I simply cannot control my monitor's brightness with my special keys nor in power control setup. So I googled.. and some smart guy recommended a bios flash as well. But when I try, it says either "Problem getting flash information" or "Problem getting bios information".
Any thoughts how to get the brightness control work?
Thanks for any kind of advice
Did you switch the BIOS and the EC Firmware to the Windows 7 counterparts?
You may want to ask Svet about that error.

Is display brightness reduced in Leopard?

Hi everyone, I have a question about the display brightness in Leopard. I just upgraded my SR MBP from Tiger to Leopard, and I noticed that the display brightness has been reduced. I used to work with half maximum brightness in Tiger, but now I have to set my display brightness to almost maximum value. Has anyone met this, or I need to do some extra setting up for the display?

Hi, I have also noticed a significant reduction in brightness on my MacBook Pro. I have recently upgraded from Tiger to Leopard and I am very disappointed! I use my Mac for design purposes and this reduction does have quite an effect of the true display of colours, etc. Has anyone found a way to correct the brightness of the screen?

How to adjust display brightness in nokia 5130 XM

Hi,
i want to reduce the display brightness at night times.
how to adjust display brightness in nokia 5130 XM
Im not able to find any options for it

no other way? :-(
Even 1650 and 2626 models have the option to adjust the brightness.

(SOLVED) Display brightness disappeared from Power Options in Vista, Lenovo G530

Hello board,
My system Lenovo G530 product ID 444638U
I used to be able to adjust display brightness in Vista from Control Panel > Power Options. I could set how bright when on battery and how bright when on AC. Also, it used to be that when I unplugged power cable it would automatically adjust my brightness according to those settings. Now, nothing happens when I unplug power cable, not even a beep.
Possible problem is as follows, but let's keep an open mind to other things as well. I spilled beer on keyboard recently. ONLY on keyboard I am sure. I replaced keyboard with something that fits but something that isn't made for my laptop, has different arrangement of Fn+ keys. Basically ever since the beer accident and ever since I replaced keyboard I had this brightness issue.
Please help me solve this.
-Alex
Solved!
Go to Solution.

I solved this problem..
Solution is to upgrade the BIOS to latest version. I am not sure actually whether latest BIOS had the needed fix or not, or it was just the process of updating the BIOS that solved this issue. But no doubt, after flashing the BIOS, display brightness function reappeared!

Apart from the lock button problem in iphone 5 the display brightness suddenly goes blank and becomes normal after locking and unlocking the iphone. The Apple service centre in India is denying to service the iphone as it was purchase in USA even thoug it

Apart from the lock button problem in iphone 5 the display brightness suddenly goes blank and becomes normal after locking and unlocking the iphone. The Apple service centre in India is denying to service the iphone as it was purchase in USA even though the iphone is in warranty.

iPhones do not have an international warranty. Warranty is valid only for the country of purchase. This is most likely because different countries require different iPhone models. Not reasonable to expect all countries to maintain stock for all models.

Low display brightness on Satellite A200-14E

When i turn my notebook on the display brightness is very low (in bios, when windows boot and when windows XP work).
When i restart notebook his display brightness stand in normal mode, how i can resolve this problem?

Hi...
Sorry but i know english very bad and i can't answer on your question (i dont know necessary words)
but I can say - it's no "Fn key" problem, FN key work miscellaneous, on low brightness he raise little and when present high brightness he raise more!
This problem present in BIOS setup program too (no WINDOWS)! But when i restart notebook (ctrl+alt+del)
The display brightness stand in normal mode... and when i don't restart the notebook, windows is starting on low brightness mode too :(
And this happened on several NEW notebooks, that sent on guarantees.

Kernel 2.6.27 update, laptop display brightness problem.

After the update to kernel 2.6.27 the display brightness resets to the highest level during the system startup. It resets to highest value somewhere during the udev processing. There is obviously some difference with display brightness handling because now I have in GNOME display of brightness level while changing (something like volume changing with multimedia keys). The brightness also resets to highest randomly while working in GNOME so I need to adjust it sveral times.
My laptop is HP nx7400. I have Arch64 installed. Also the problem appears on my brother's HP nx7300, almost same hardware.

Hi peart.
I am not kernel programmer, but I have analyzed the code of the ACPI video driver and the problematic patch. I have removed the check which sets the brightness to max but I can't compile because of not enough space to compile the kernel :S. Would you be so kind to compile the modified file and upload a compiled moduel to test.
I have following explanation for my modification:
Here http://git.kernel.org/?p=linux/kernel/g … 29c1ba8055 we can see that there is added check if ACPI BQC object exists. If the object doesn't exist then the brightness is set to max, which obviously is the problem with our laptops because the BQC object is optional. If we revert the patch completly the BCQ check is moved to the outter if-structure and the execution skips whole part, where the backlight device is registered.
My modification is that I removed the check for BCQ object and removed the part where it sets the backlight to max. As far as I can see acpi_video_get_brightness(device->backlight) can be called without prior checking of BCQ object existance, because acpi_video_get_brightness then calls acpi_video_device_lcd_get_level_current which gets the current brightness level. acpi_video_device_lcd_get_level_current checks if BCQ object exists and handles it properly, as far as I can see.

Display brightness

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