Lenovo ThinkPad L R/SL :: L440 - Screen Brightness Is Being Dimmed
May 12, 2014
I have the Lenovo L440 (20AT002YGE) with the integrated Intel Graphics.
I have turned off the automatic dimming of the screen brightnes in the windows energy settings and also turned off the energy saver settings in the Intel driver but the screen keeps beeing dimmed when the background is black or dark. This is very annoying when you work outdoor and the sun keeps shining on your display and than it dimms the brightness.
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May 15, 2014
When I watch a video clip, I experienced my X1 screen automatically got dimm when background gets dark. So it became even more darker and I cannot see anything. But it gets back to bright when background gets light.
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Nov 24, 2014
Customer has three L440 with Docking station PRO and Samsung 22" S22C45 on DVI
* W7 64BIT Sp1 Lenovo version not VL
* Latest BIOS
* Latest GFX Driver
* All Windows WSUS Updates (Standard Image from lenovo with all Hotfixes)
* Power Options set to Performance (lenovo Power manager deinstalled)
* Office 2010 SP2, PDF24, APPV client 4.6+
* Dameware 6.X Agent
problem:
Laptop is in docking station with external 22" Samsung DVI and working in Winword, IE or others. Suddenly screen from Samsung turns black (laptop TFT from people who use dual stays on). After 1-10 seconds the samsung screen comes back. We fiest thought this was some RDP issue with other users connecting to the device. (Not the case)
NO > BIOS and GFX is latest and MADE it worser with updating to the latest (happens more often).
NO > MHz change from 59/60 or slighty modify did not solve
NO > It's not a screensaver problem
NO > All three Samsung are from diffrent shippments and even Distributors
NO > All three L440 are from different time periods 2-3 Months split
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Nov 5, 2014
I have a Thinkpad L440 with 4GB of RAM.
1. Is it OK to add 8GB (so I will have 12GB in total) or it would be better to add 4GB in order to have two similar SODIMMs?
2. Are there any known incompatibilities for specific brands? I found two SODIMMs from Kingston (part numbers KVR16S11/8 and KVR16LS11/8) and one from Crucial (part number CT102464BF160B). All are clocked at 1600MHz.
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Sep 29, 2010
There are a few configurations of L440 laptops with Nvidia GT 720M grafic cards and Optimus (e. g. 20ASS01G00). Is it possible to change the used graphic system in the BIOS (Intel only/NVidia only/Optimus)? And which card is hardwired to the external ports (VGA, mDP)?
(Do this differ from the T440p or the Edge Series, E540?)
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Sep 9, 2014
I have L440 with 64-bit Win7. Earlier experienced major WiFi connection problems, which were fixed with BIOS and WiFi card driver update.
Briefly after that Wireless Radios Master Control no longer lists Mobile Broadband, it only shows 802.11 Wireless/Wimax and Bluetooth.
Windows Network Connections lists "Mobile Broadband Connection" as "Not connected, N5321 gw Mobile Broadband Driver. Diagnosing this connection suggests to "Turn on mobile broadband capability", which I cannot do as it is not listed in the Wireless Radios Master Control.
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Apr 7, 2014
I have a Lenovo L440 laptop with a think pad pro dock. The HDD is encrypted with TrueCrypt and needs a password before windows will boot. The laptop will not display out to the monitor attached to the dock before windows loads. I have changed the bios setting Config > Display > Boot Display Device, as well as all the other display options, but it does not make a difference. I have tried with a VGA cable and a DVI cable and neither works. I have tried with 2 different L440s and 2 docking stations with the same problem occuring on both. I have successfully used a Lenovo L540 laptop with the same model of docking station. I have also updated to the most current bios version.
I'm wondering if I'm missing something or if the L440 model simply does not support this function?
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Jan 3, 2015
I bought Lenovo L440 few days ago.
I have problem with wifi connection. Wifi works perfect with other devices: phones, tablets, laptops. When I connect to wifi with L440, wifi works 5-30 min. and then crash. L440 kills wifi network. All devices can't connect to wifi until I restart router.
I have read about this problem, but in task manager I can't find "discovery.exe" or LenovoEMC Storage Connector in Contral Panel.
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Mar 1, 2014
When I pause playback of an .mp3, there's permanent white noise coming from the internal speakers.
Stopping the playback stops the white noise after approximately 4 seconds. I never had this issue with any laptop / soundcard. Can this be fixed?
I have the latest BIOS and drivers installed. Headphones are fine (no white noise).
Maybe the inbuilt L440 soundcard has a problem. I had to return my first L440 because there was a loud plop when starting playback and the left speaker was way quieter than the right one.
In the German part of this forum people are reporting problems realted to the internal speaker (cracking sound, white noise).
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Feb 8, 2015
I have a W540 with 3K Ips panel and Windows 7 Pro 64bit.
I recently installed a new hard drive and installed windows 7 pro 64 (previously on the other hard drive was Windows 8.1 Pro 64 bit ( there I could change the brightness ) )
My problem is that I can not change the brightness .
I've already tried:
-Reinstalled all NVIDIA driver
-Reinstalled all Intel graphic drivers new
-Reinstalled Intel and Nvidia drivers simultaneously
-Remove Lenovo Power management
-Tried to install NVIDIA driver from the Lenovo and the Nvidia page
-Reinstalled Windows
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Jul 15, 2013
I have installed the latest driers and since then I am unable to change the screen brightness using function keys. I have installed multiple driver updates hence it is difficult to find out which driver is causing the issue.
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Dec 10, 2012
How to reduce screen brightness below standard level in ThinkPad T520 ?
I think it is possible somehow, but I don't know how. I reduced brightness to zero using Fn key + End key, but it's not enough, I want to make screen darker, because my eyes get tired.
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Jan 10, 2013
Another problem on my Lenovo Thinkpad L520: After installing the Lenovo Power Management Driver, I can no longer adjust the LCD brightness by using the FN+DEL/POS1 keys. Immediately after adjusting the brightness, it gets reverted to its old value, set in the Power Management software.
I tried the Windows 7 driver (1.65.05.21) and the WIndows XP/7/8 driver (1.66.0.22), both with the same result.
This is really annoying and I am very frustrated with Lenovo right now, since this is not the only problem I am having with the laptop.
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Jan 11, 2010
I have very annoying problem with hot keys for adjusting monitor brightness! After last version of hot keys driver they don't work. I can't increase or decrease brightness! Pressing them down and can't change anything. And there is something more! For example I have adjusted some level from power manager and everything looks good until I don't try to manage brightness with hot keys. I doesn't matter if i want to increase or decrease brightness, it just goes to maximum level!
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Aug 26, 2013
I have a thinkpad l520 5016-c74 running windows 7 64bit and kubuntu 13.04.
When i try to adlust the brightness in kubuntu, the jotkeys work just fine.
On the other hand, in windows, i can adjust the brightness from the windows menu, but every time i hit Fn+home or delete (this is the hotkey on my machine) the brightness, regardless of where it is set, drops to 7 (from a scale of 1-15), and cannot be readjusted, If i hit again Fn+Home or Delete, it does this flash, like it's trying to change the brightness, but something holds it in 7. I can always change it from the windows menu. But again the same thing, hotkey and back to 7.
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Jul 4, 2010
I have a W500, ATI Mobility FireGL V5700, Windows 7.
When I press FN+Home and FN+END to regulate brightness up or down, the brightness symbols turn on and goes up/down, but the screen brightness is not regulated up or down but stays constant somewhere in between.
What can I do to get "brighness" working?
It has never worked, the computer is 2 months old. I have upgraded from Windows 7, 32 bit to 64, but brightness is still not working.
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Nov 12, 2014
Brightness on thinkpad doesn't work.
I have reinstalled my thinkpad W540. For display driver I have downloaded latest version from Nvidia. All other drivers are installed from Lenovo website.
OS: Win8.1 pro
When I push the F5 or F6, display brightness bar is shown, but nothing happens.
Already tried
- reinstall drivers after delete device in device manager
- reinstall programs after delete all drivers from nvidia and intel in program and features
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Mar 29, 2011
I just got the x120e and I already went through and fixed it auto-brightening itself. After I hit the Fn + Home and adjusted it to my preference. It was not on the charger when I did that and I was in a darker room so I had the brightness down lower. Later on in the day, I plugged it in to charge and I went to make it brighter. The brightness is not changing however. All the oher Fn + F keys are working. Just not the two for brightness. The weird thing is, I shut the computer, waited for it to enter sleep mode then opened it up again and it was really bright and I had to pretty much squint, but again the keys were not working to lower it. I closed it again and opened it and it is again dimmer. The keys still aren't working.
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May 19, 2013
Why neither the display brightness slider nor the F8/F8 brightness function keys cause any change to the display brightness? It used to work but for the past few weeks it's not. I thought that slider was able to override any preset power settings.
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Jan 11, 2013
I fresh installed Windows 7 and installed all the drivers from Lenovo's website. Still I cannot adjust the brightness. It stays on MAX and drains the battery in 1h30min. All other F hotkeys work but not F7 & F8 for brightness control. Is this a BIOS/Drivers issue?
ThinkPad Edge E535
Model: 3260-CTO
AMD A10 4600m apu
Windows 7 64 Home Premium
New just turned on a few hours ago. Brightness control was working before fresh install. Did fresh install to get rid of bloatware.
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May 27, 2014
I updated the BIOS to 2.26 a while ago and ever since then there's no on-screen indication of caps lock on/off, screen brightness or volume when I change it. Since it seemed to be affected by BIOS, I updated again to 2.27 just now, but the problem persists. I needed to update the Hotkeys Feature Integration by downloading the utility thingy from this page. Probably wasn't a BIOS thing after all.
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May 27, 2014
I've got 2 separate but really annoying issues with my W540 20BH:
- display brightness keys not working: when waking up from Hibernation mode, sometimer (really, randomly!) the display brightness keys (Fn+F5/F6) don't work.... either if the display brightness is stuck on max, min or an intermediate level...Is there a way to shut down and restart the process which commands the Fn keys?
- audio channel commutation gets stuck. Normal behaviour of the audio configuration is:
1) speaker volume disabled, mic disabled
2) when plugging in a 4-pin headset, headset's volume is on, headset's mic is switched on; speaker volume is still disables.
3) when unplugging the headset, speakers' volume is still 0
After each boot, the audio channel is at 0, but doesn't commute to the headset when plugged in! I have to open Configuration Panel, realtek properties. With this window open, unplug and re-plug the headset. Now, the volume has its normal behaviour.
Any better way to configure audio channels and evenments, which is able to bypass realtek's manager?
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Oct 29, 2012
Loving my Yoga 13 so far have had it since Oct 26th when it was released. Like everyone else I had some issues with partitioning yadda yadda yadda, got that taken care of, but lately I've noticed that my screen brightness seems to flicker, ALL the time, when switching from program to program if the color changes on the screen I notice that the brightness changes as well in noticeable increments. I have the automatic brightness setting set to OFF, so I can't imagine that's the reason.
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May 21, 2014
I have just bought the Flex 15. I looked at the power settings and set the brightness, but it is ignoring the settings and always either darker or brighter than I want it. It keeps flickering between being darker and brighter and it's giving me a headache. It is unplugged if that makes a difference, I haven't used it plugged in yet to know if it does it then. How can I stop it? I've looked through the settings and can't find anything.
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Apr 13, 2013
I used my brightness down button once and now it won't go back up. I can't adjust the settings at all, despite the graphic on the screen showing me the meter going up and down. I've checked all drivers, tried uninstalling and reinstalling lenovo energy management, and I've still got nothing. I've stopped short of a factory reset because that's super annoying having set everything up and then a couple weeks after purchase have to do it again.
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Jun 27, 2014
For some reason I can't change my screen brightness anymore. I've already tried a HD 4000 driver rollback to version 9.17.10.3223 and I also disabled "adaptive screen brightness" at the power management. For some reason I can change the brightness by using the "microsoft basic display adapter" driver instead of the HD 4000 but that isn't a real solution.
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Jun 16, 2014
My lenovo G505 recently had to be reformated because there was a blue screen that came up one day that said there was problem with my PC and the error was critical_service_error, something like that. So my dad had to reinstall windows 8 for me using a cd he had that didn't come with the computer I don't believe. So now for some reason my screen brightness isn't adjusting and it's driving me crazy! It's staying on full brightness which I hate! I tried changing it from the personalization screen and nothing happens.
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Jan 5, 2014
When plugged into the adapter my Levovo Z570 screen flickers between bright and dark when on certain webpages or doing certain tasks. I have changed the battery and this makes no difference. This doesnt happen when on battery power.
Note that the brightness is flicking between the battery brightness setting and plugged in brightness setting. So if there is a large difference between the two the flickering is very noticable and distracting. If I make the battery brightness the same as the plugged in brightness the flickering doesnt happen.
Lenovo IdeaPad Z570 15.6 inch Laptop - Gunmetal (Intel Core i7 2670QM, RAM 8GB, HDD 750GB, NVIDIA GT520M 1GB, Blu ray, WLAN, BT, Webcam, Windows 7 Home Premium 64 Bit
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Dec 10, 2012
I recently purchased a lenovo p500 ideapad from bestbuy around 3 weeks ago. just on thursday, i press the f11 key to lower the brightness and it imidiatley went very dim. i cannot bring the brightness back up even tho the button and the computer says the brightness is all the way up. the screen is at the dimmest setting possible. i am running windows 8 and i have checked the drivers to see if they are updated and they are but i cannot bring the brightness back up. this is very frustrating.
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Nov 9, 2013
I've noticed the screen on my Yoga 2 pro tries to automatically adjust the brightness of the display depending on how dark or light the content being displayed is... I want to figure out a way to make it stop. For example, my desktop background is just plain black, and when i got to my desktop, it starts to dim by 4-5 levels lower, and then when I go back to my browser, it reverses and starts to turn up the brightness by 4-5 levels. I've already tinkered with all the power settings and even the advanced power settings to turn of auto dim/automatically adjust brightness etc and all those settings but it still does it.
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