Lenovo ThinkPad L R/SL :: L520 Brightness Controls Not Working?
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.
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 (220.127.116.11), 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.
I just bought my laptop. Installed Windows 7 clean 64bit on it.This is the laptop's product page. I can't change the brightness of my laptop's screen. I can't do via the [Fn+Up/Down] combo nor by the Windows Power Options interface.
I tried all combos of installing and uninstalling the Lenovo Energy Management. (I got v18.104.22.168 on my laptop).I tried un and installing Intel HD 4000 (Driver v22.214.171.12496). I get Lenovo ACPIVPC v126.96.36.199 (12/15/2011) when installing the energy management thing.I've tried to install as least as possible other Lenovo crapware.
I've recently installed Windows 7 x64 build 7229 on my Vaio and I've managed to get everything working except for the screen brightness controls.
So far I've installed the x64 version of SFEP driver along with Vista versions of Sony utilities dll, sony shared library, sony event service and sony settings utility.
Installing the xp versions of those programs made the brightness control work fine, but on Windows 7, the screen brightness control pops up on the screen but the brightness doesn't change. Also I've read that I should be able to control the brightness in the Windows mobility manager, but there is nothing there about screen brightness.
The screen running at full brightness is hurting my eyes.
The brightness control keys (f2 & f3) on my pavilion dm4 stopped working all of a sudden. I'm operating windows 7 64bit. I've tried reverting to previous system restore points. I've also installed the BIOS, Intel chipset, and graphics drivers. All the other function keys are working properly, just can't change the brightness. Right now it's stuck on the brightest setting. I'm getting terrible eye strain from the screen.
I have updated some months ago, my laptop 7859-5SG from Windows 7 to Windows 8 -> 8.1 and after that the bluetooth radio doesn't work anymore.
I tried to find a driver on the driver download section for my laptop, but I didn't find nothing. First problem found, is the hotkey fn+F5 that not show nothing on the display after key press, and normally with this function I can see if the radio is on or off.
I checked on the BIOS section if bluetooth is enable, and this is on. What I can do to activate bluetooth radio again?
I've had my L520 for over a year now and have not previously needed to burn stuff to disk, so I do not know if my problem is new or old.
Essentially the drive recognises disks when they are inserted and accurately displays files already on the disk, but it gives available space as nil regardless of disk or existing file size. Additionally if a blank disk is inserted it will say that the disk cannot be read and to try formatting. These are standard preformatted disks I'm using.
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.
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.
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.
I want to install a new ssd-drive, which is empty. I did create a DVD under rescue & recovery. But on startup with the new hdd, it only offers me a restore option, not a NEW system. R&R also only created ONE disc, imho thats not enough, dont I need some more for the whole system?
And I cant backup the whole windows system, because even though its fresh its 80 gig (some data was taken along, dunno which)...
And thats my problem in a nutshell: I cant create discs with ONLY the windows install-system, or rather I dont know how
I now tried 3 times, and R&R burns only ONE disc, and booting from that, it asks for a recovery. I want a new fresh virgin system...
I tried a couple of times, did not work. Had to swap back the old drive to work again.
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?
I recently replaced the inverter in my Dell Xps M1530 laptop. I bought the inverter off ebay, and the listing said it was compatible for my laptop. My problem is,
that since I replaced the inverter (screen looks great by the way), the brightness controls no longer do anything. The laptop is on constant highest brightness. If I use the Fn Up and Down arrows,
the brightness bar comes up on the bottom right of the screen and it actually moves left and right in line with what I am telling it to do, but the screen brightness doesn't change! I have tried going in to the power settings and display settings
I upgraded from Vista to Windows 7 on my SZ5. Was surprised at how much works out of the box (fingerprint sensor, drivers etc) but the one glaring bug I found is that when I close the lid and the monitor shuts off, when I reopen it the brightness controls (FN+F5 and FN+F6) no longer work.
I also notice that the brightness controls in Windows' power options Control Panel disappears.
I need to restart my computer to resolve this (similar problems by other users: Sony Vaio SZ1XP - Windows 7 RC ). Does anyone have a solution? Thanks!
I just tonight noticed that the F5/F6 keys do not work after the machine wakes from sleep. It works fine after I reboot. But after sleep the OSD will show up when I hit F5 or F6. The display gauge will move to the left TWO positions when I hit F5 but only once. If I hit F5 again, nothing happens. If I hit F6 it moves to the right TWO positions again only one time. In both cases there is NO change to brightness.
I tried to log off and back on to see if it has any effect. It did not. I'll reboot now and the hibernate to see if the problem recurs coming out of hibernation.
I am running Win7 ultimate 32 bit.
UPDATE: Well this is strange. I rebooted and the F5/F6 keys worked fine of course. I hibernated and then came back out and they still worked fine. I logged off and back on and again they were fine. So this seems to be ONLY a sleep issue.
If any of you have an FZ model running Win7 32 bit. Can you try this and report your findings?
Ive recently had my laptop repaired after it got wet and the replaced the screen and everything,but since i have had it back the FN and brightness buttons do not work, nor does the brightness controls work via BIOS settings, also when the laptop goes into sleep mode or the lid is closed, the screen stays on bright white instead of going off.
just can't seem to get my Brightness controls to work in speed mode in windows 7.
I've tried 169.09, 180.70 and the most recent forceware drivers.
I've installed the registry file that was recommended in one thread. I've tried all kinds of orders. Still, nothing.
I've currently installed (in this order) SPEF SonyPI Shared Library SonyUtils DLL Event Service The Registry Patch NVIDIA Drivers
They work fine in STAMINA, but not in SPEED. I can't even access them through Windows Mobility Center or Power Options. I can change them a very small amount though the NVIDIA control panel through the "adjust color settings" tab. Otherwise, theres no mobility options in the NVIDIA panel.
I used the upgrade kit from Acer to do a clean install of Windows 7 to my Timeline 1410. Everything works great and I love this laptop... except that the brightness controls (Fn+Left/Right Arrow) do not work. It's locked at highest brightness.
I am at my wit's end trying to figure this out.
I have installed all the Win 7 drivers from Acer's site, particularly
When I first boot it up, the brightness controls work fine during the BIOS steps. But once Windows takes over, the controls no longer function. In the Windows Mobility Center, there is no brightness control panel. [FWIW, my Dell, which does have functional brightness control, doesn't show one either.] All other Fn-combinations, like volume control, work fine.
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!
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.
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
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.
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.
the two buttons to control brightness worked fine before I uninstalled the default graphics driver. Now, when I press it I still get the GUI slider, but the brightness does not change. My brightness can be changed fine in the windows power settings. I have reinstalled the same thing I uninstalled, reinstalled Energy Manager, and still it does not work.
I will keep this short, I have a Lenovo ideapad y510p with Windows 8.1 (I got it with 8.1, did not upgrade from 8) . I noticed a problem yesterday, where I cannot adjust the screen brightness. If I use the keyboard commands (Fn + Up and Fn + Down) The slider appears on the top left of the screen, as always, but does not “slide” It stays static.
If I move the slider on the Setting menu, I can slide the value but the brightness does not change and the value is not reflected on the slider on the top left of the screen.
I am not sure when this happened for the first time.