Lumia 735 screen brightness issue

My new Lumia 735 has an issue with the screen brightness dimming for no reason. For completeness I have done a reset, it is nor on auto, and does I when on mains or battery. The screen is supposed to be extremely bright when set to max. However it is for about 10 secs then dims then goes bright again then dims for ages then suddenly goes bright. I have been Through all settings and changed/tried all things to no avail. I think this is not a unique problem and is prob software linked. Anyone got any ideas?

Although you say you've set the screen so the brightness is NOT set to 'auto', this sure sounds like the light sensor is still active.
I would first try a power cycle to see if that clears things up (which I doubt, but no harm trying, right?). Then do a back up and try a hard reset.
After the hard reset, test to see if the brightness is working properly. If not, then it may be malfunctioning light sensor and require repair/replacement. If it's working properly, then slowly start adding apps one by one and testing again, to see if one of them is causing the problem.
/drt

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Nokia Lumia 1520 - Screen Brightness Problem

I have two Nokia Lumia 1520.
Both of them have the same problem. I will explain the problem to you in detail and before that let me assure you I am a Windows Phone long time user , have been part of the development , developed several apps for the platform and I have used Lumia 800 , 720 , 920 , 925 and now 1520. So I am well aware of all the settings , sunlight readability , automatic brightness etc. This problem is not due to any of these , I can assure you
Now the problem ,
I set the automatic brightness option OFF
I move the brightness to HIGH
Then I lock the phone
When I unlock the phone , the brightness drops by 10% suddenly without any intervention
This problem happens sometime. Some days I see this problem , some days I don't and there are few days where I see this problem very heavily.
I purchased another 1520 and it has the same problem. I am very sure , from my experience that this is a firm ware issue. This is NOT a hardware problem , but a serious problem from your software end. It is prudent that Nokia recognizes this problem and finds a solution to this. Interestingly , I am not the only one who is facing this problem , the whole globe is facing the same problem and for such a pricey phone , this is a frustrating experience - very frustrating. I am sending some links , which will show the problems users are facing:
http://forums.wpcentral.com/nokia-lumia-1520/255608-lumia-1520-screen-brightness-dimming-unwantedly-...
http://forums.wpcentral.com/nokia-lumia-1520/251303-screen-dimming.html
http://forums.wpcentral.com/nokia-lumia-1520/252501-screen-brightness-fluctuates-purpose-bug.html
http://forums.wpcentral.com/nokia-lumia-1520/255508-lumia-1520-screen-brightness-problem.html
The phone is rock solid and amazing except this irritating problem.
I have only few days within which I can request a exchange from the merchant. So if any Nokia official can confirm that a software fix is on the way , it would be super helpful
Nokia , please help !
Moderator's note: We have removed the IMEI numbers. Posting of personal information is not allowed in this forum for security purposes.

I have Nokia Lumia 1520 Black.
I have also been facing the same problem with screen brightness.
The problem occurs only when the Brightness is in Automatic mode.
--> When the Brightness is set to Automatic mode & take out from dark location to bright location the display turns out to weird grey color.
--> And then if the brightness is set to low, medium or high display comes to normal.
Is this issue related to the hardware or software.
If it is related to the Software will you be able to fix it ? or else How about the replacing with the new one ?
Awaiting for the response.
nonnin8 wrote:
Same here i have white 1520
I have another problem with the screen, when it wakes up or i get a call the colours are off grey colour are very light grey and after few moments it turns to normal.
I am using WP 8.1

HP Beats Special Edition 15-p030nr Notebook PC (ENERGY STAR) screen brightness issue

I'm haing a screen brightness issue on my HP Beats Special Edition 15-p030nr Notebook PC (ENERGY STAR). I upgraded from 8.1 and the F2/F3 keys to dim or brighten screen do not function. Any suggestions besides reverting back to 8.1.? Not sure if I had the screen dimmed all the way or brightened all the way when it was upgrading, or if it even mattered.

Hi @Twright2014
Welcome to the HP Support Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I see your having some sound issues with your new notebook. I will be happy to help you with this. How does the audio sound when you use a set of headphones? Try the troubleshooting steps in this HP document No Sound from Speakers which includes using the built-in Windows troubleshooter.
Please click “Accept as Solution ” if you feel my post solved your issue.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Thank you,
BHK6
I work on behalf of HP

[SOLVED] Screen brightness issues with Acer 5372Z

The screen of my laptop goes black whenever I boot into ArchLinux, after "reading Udev events" on startup. Most of the time I have to use a flashlight to see the console on my screen and type
sudo setpci -s 00:02.0 F4.B=20
to set screen brightness manually. The `Fn` + `Brightness up` combination doesn't work on my machine, but that's not an issue with Arch, but fault to sugar in coffee.
There are a lot of similar threads in this forum, but none of the solutions described there really worked 100% or not at all, that's why I'm opening a new thread as this seems to be specific to my hardware.
Details:
Graphics controller:
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09)
Screen resolution:
1366*766
/boot/grub/menu.lst:
# (0) Arch Linux
title Arch Linux
root (hd0,0)
kernel /vmlinuz-linux root=/dev/sda10 resume=/dev/sda5 ro vga=775
initrd /initramfs-linux.img
/etc/rc.conf#DAEMONS:
DAEMONS=(hwclock syslog-ng network netfs crond laptop-mode dbus gdm)
I will describe here what I have did so far on hacking:
Installed the video driver for my Intel card as described here in the wiki
Set kernel mode to `nomodeset`, without specifying vga, of course, which surprisingly solved the issue, but prevented me from using Gnome.
The supposed solution in the Arch wiki doesn't work for me. It makes it worse, in the sense of dumping screen brightness even before "reading udev events" on boot.
My current workaround (to avoid using a flashlight) is to put this line into my `/etc/rc.local`:
setpci -s 00:02.0 F4.B=20
I wonder if you can help me to solve this issue, or point me to any of the great documentation provided by the Arch community I might have missed...
Last edited by kennym (2011-09-06 16:03:58)

rg_arc wrote:I have this problem as well for my Acer Aspire 4810TZ. The only thing I can think of is to make some sort of temporary fix. But I agree with you, There should be a permanent fix. Every time I've installed Arch on this computer the same problem arises and the only way I can change the brightness is the setpci terminal method.
This is bad news for new Arch (and Linux) users. This will be probably the point where they will turn over to another distribution.
It seems to be something which has been included in newer kernels, because I can remember that in the 2.6 series this issue did not exist.
Last edited by kennym (2011-09-05 16:05:08)

Playbook Screen Brightness Issue

I have purchased PB few days back and I am not able to change the screen brightness. I have tried disabling the auto-din feature and tried adjusting brightness from the battery icon. The slider goes from end to end but the brightness remains the same.
Also the sliders in Settings->Screen does not even move.
Did any one else face similar issue? How can this be resolved?

on Playbook press power button and both Vol + - buttons for 10 seconds to reboot it.
and see if it persists.
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Card Reader & Screen Brightness Issues with 3000 N100 Running Fedora 10

Hi, I'm new to the forum, and came here to look for info on a couple minor issues I'm having with Fedora 10 on my 3000 N100. It's great to see that there's a group of Linux users here. Anyway, onto the issues:
1) The integrated card reader. It works just as it should right after I boot up - i.e. insert an SD card and it auto mounts. However, if I leave the system idle while doing other things the card reader quits working. I've used the terminal to look up the location of the card reader when it's working properly. If I unmount the card (under the Gnome desktop System menu, right click the card, select unmount), leave it in the reader, and try to remount it in terminal (using the location mentioned above) it tells me the device isn't found, or the location doesn't exist.
2) I've set the screen brightness to max as my default (which is just bright enough to read comfortably under the fluorescent lights here at work), and my brightness function keys work fine too right after bootup. Again, if I leave the system idle for a bit the screen goes dim. At this point the brightness function keys quit working as well. If I go to System > Preferences > System > Power Management I can slide the brightness toggle down and back up, and the screen then immediatetly returns to full brightness.
Any help you folks can offer would be greatly appreciated.

Hi ugaarguy,
It sounds to me like there's some power settings that are powering down the card reader after a certain period of inactivity. This could also be the case for your brightness settings and keys.
You may find a better answer in the Fedora forums regarding these issues, so you might want to try posting there as well.
Is there a control panel which deals with power settings in Fedora? Perhaps check around for these settings to see if there are certain power saving features enabled on your system.
J

Z1 screen brightness issue

my xperia Z1 brightness settings is auto brightness… when i switched off the screen for amount of time and switch it on to use my phone .. screen brightness go very high then back to the original state… what is this ,why is this happen and what is the solution please ????

If you have auto brightness active it will change the brightness depending on your surroundings. Before it's able to adjust to the surroundings it might go very bright before it finds the optimal setting for the situation.

GE60 SCREEN BRIGHTNESS ISSUE

A few days ago i was watching videos and i didnt realise that unplug my notebook and it shutdown.A day after when i opened my nb i couldnt adjust my screen brightness. I went back to my old graphics driver (hd4000).Also updated, deleted driver and setup again... I controlled my device manager page. I deleted pnp monitor and searched changes. i cant figure it out. If someone find my solution i ll be appreciated..

i have GE60 0ND.. (gtx660m i5 etc.)
Fn keys working with other comb.
And sometimes i get windows updates but that day i didnt update.
Also now i tried Ec reset according your advice. like there,
https://forum-en.msi.com/index.php?topic=112416.0
but it doesnt working..
i about to blow my cap.. its really annoying..

Newly Discovered Screen Brightness Issue

After reading a topic on EverythingiPhone about the battery recharge indicator "glowing", I decided to test my iPhones side by side. I never realized before but one of my phones screen is much darker than the other one, even though both are on auto-brightness and the same brightness level. Its very noticable on any screen that is a light color. Also when you look at the weather widget the one that is brighter has the sun picture with much longer rays.
Here are a few pictures of them side by side for comparison, has anyone else noticed these issues?
http://img254.imageshack.us/my.php?image=img0135wb2.jpg
http://img58.imageshack.us/my.php?image=img0138xd0.jpg
http://img507.imageshack.us/my.php?image=img0136fg5.jpg
Mac OS X (10.4.8)

It doesnt block the sensor, I made sure - it barely covers all of the metal part around the edges. I never noticed a problem until I read this article: then when I was testing the "glowing battery" theory I noticed that the one with the glowing battery also had a much brighter screen, even at lowest and highest brightness settings.
http://72.14.209.104/search?hs=sUq&hl=en&lr=&c2coff=1&q=cache%3Ahttp%3A%2F%2Fwww .wirelessinfo.com%2Fcontent%2F2-out-of-our-3-iPhones-have-faulty-batteries.htm&b tnG=Search

10.6.8 update: screen brightness issues when hooked to external monitor

I just upgraded to MacOS 10.6.8 yesterday, and since then, the screen on my Macbook is acting strange.
I'm hooked up to an external monitor which I use almost all the time as the primary monitor. Usually, when I'm using the external, I turn the brightness all the way down (to black) on the Macbook. After the update, however, the Macbook seems to have a mind of its own. The screen gets brighter, then dimmer, then brighter again, without reason. Or, othertimes, after about 30 seconds of inactivity, the Macbook screen gets brighter, then when you move the mouse, it goes back to black again.
It's not that I care so much, but just wish I knew what was going on. Glitch in the new software?
Macbook
MacOS 10.6.8
External monitor: ViewSonic VA2231wm

Same problem here with a MacBook Pro. I have the notebook connected to a Cinema Display and thus manually dimmed down completely my MacBook Screen. Now after updating to 10.6.8 my MacBook screen dimms up at the time when it would normally dimm it down if the screen was "enabled".
I tried several steps to fix that:
- Dis- and reconnected my external Cinema Display.
- Changed display and energy safer settings in system preferences.
- Fixed file permissions.
- Did a PRAM-reset.
Nothing helped.
Please help us!

T420i screen brightness issue

This one is a little hard to explain.
I should note that this only happens when I am not plugged in with an AC adapter.
On my brand new Thinkpad, my screen's backlight will brighten when there is a lighter image on the screen and dim when there is a darker image on the screen.
The way it works is when I transition from a lighter image to a darker one, the screen will slightly lower its brightness level about twice a second. It will do this 4-5 time, dimming the screen little by litte. It isn't a lot, the total difference between the 2 brightness level is about 1 brightness leve if I were to adjust it manually. It might even be less. The annoyance is how it changes bit by bit.
I'm led to believe that this is actually a feature with the notebook, but I just can't find a way to turn it off.
Any help would be greatly appreciated.
EDIT: After a ton of fiddling, I finally got it fixed. In case anyone else wants to disable this, you have to go into the control panel, open up Intel GPU options, select Advanced, go to power, change power source to battery, and uncheck the box that says "Display Power Saving Technology"

Computer monitors may need to be calibrated. If you have AMD graphics you can go into the Catalyst control panel and adjust the gamma and white balance settings.

[SOLVED] YASBI (yet another screen brightness issue)

i feel silly posting this, as there seems to be a lot of documentation about this, but i'm kind of baffled. if i run
echo "5" > /sys/class/backlight/acpi_video0/brightness
as root, everything works nicely, my screen turns it's brightness down to half-way (max brightness is 10).
if i run the same command as sudo, i get a permissions error. my final goal is to bind this to a key in openbox, but first i need to figure out what i'm doing wrong. do i need to be part of a certain group? do i need to edit my sudoers file?
thanks in advance.
Last edited by williamkray (2012-02-02 22:49:56)

i have solved this, and am posting how here for anyone else who might come across this in a search. this is what i came up with:
added the following to my /etc/rc.local:
chgrp users /sys/class/backlight/acpi_video0/brightness && chmod g=+rw /sys/class/backlight/acpi_video0/brightness
then i came across this script on another forum post, and saved it to /usr/sbin/brightness, made it executable and chgrp users:
#!/bin/bash
file="/sys/class/backlight/acpi_video0/brightness"
level=$(cat $file)
if [[ "$#" -eq 0 ]]; then
cat $file
elif [[ "$1" = "-" ]]; then
echo $(( level - 1 )) > $file
elif [[ "$1" = "+" ]]; then
echo $(( level + 1 )) > $file
fi
then in my ~/.config/openbox/rc.xml i added the following code to bind the commands to my Super+Up and Super+Down :
<keybind key="W-Up">
<action name="Execute">
<command>brightness +</command>
</action>
</keybind>
<keybind key="W-Down">
<action name="Execute">
<command>brightness -</command>
</action>
</keybind>
Last edited by williamkray (2012-02-02 22:51:28)

Ideapad s405 screen brightness issue on win8

I read about issues after downgrading to windows7, i have the same issue with light control on windows 8, what is the solution to that problem?

hi attilakk,
Welcome to Lenovo Community Forums!
The Issue is "Only high and low option for Brightness" This only show under WIndows 7 and can be fix by reverting to Windows 8.
You said you have WIndows 8, can you share if the same is happening or what exactly is happening in your system.
Thanks
Solid Cruver
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LE Screen Brightness issue

I have the Excite LE and have noticed that with auto brightness OFF when the battery reaches certain levels the display dimms and cannot be raised in the settings. Any idea what controls this annoying setting? For example i noticed at 88% of battery life it went down to about 30% brightness and when you try to move the brightness level, it won't move. Thanks.

I have an Excite 10LE as well and have had the same problem. Seems to happen at random. Doesn’t matter if it's plugged in or not. I've turn the auto-brightness off and slid the slide bar to the brightness setting and at some random point mine will dim to I'd say about 10 or 15% and I can't budge the slide to increase the brightness. It will slide to decrease it though. Has anyone else experienced this issue?
RPS

Window 7 is not supported (screen brightness issue)?

I called Lenovo tech support to find out if they had a solution for the inability to dim the screen in Windows 7. The suport person told me to load the latest drivers. I did, then called back with my case number. I told them that the suggestion didn't work (I knew it wouldn't).
The guy then asked me if I had received the Win 7 update from Lenovo, and I told him "No, I bought Windows 7 and installed that version".
Eventually, when he realized he couldn't help me, he told me that they couldn't give me any more help because I had loaded "unsupported software". Apparently, they consider Windows 7 (if not received from Lenovo) "Unsupported Software"!
Solved!
Go to Solution.

Thank you! That worked. Someone please tell Lenovo tech support about this.

Lumia 735 screen brightness issue

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