Re: Satellite L855 and Windows 8 - can not adjust screen brightness

Hi everyone !
I installed Windows 8 on my Satellite L855 and it is running pretty well except that I can no more adjust screen brightness !!! I updated all the drivers for Win 8 but it didn't resolve the issue.
Hope someone can help me !! Thanks !!

Hi
Did you install the VAP (value added package) provided with Toshiba Win 8 upgrade assistant?
Its necessary and the brightness can be controlled pressing F button
F2 Decreases screen brightness
F3 Increases screen brightness

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Tap or click PC and devices, then tap or click Display
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All-in-One LX835-D3300
Downloads here.
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Satellite L855 - 13G - can not adjust the brightness after update to Win8

Hello
After update to windows 8 , and installed the latest AMD driver on Toshiba site, I can not adjust the screen brightness using the Fn F2 or F3.
In this thread : http://forums.computers.toshiba-europe.com/forums/thread.jspa?threadID=69752&tstart=45
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Hi
Download the latest driver from Toshiba EU driver page.
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Hello myizham,
Welcome to the HP 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 understand you are having issues adjusting the screen brightness on you HP Envy 23 Beats Edition All in One PC. I would be happy to assist you, but first I would encourage you to post which operating system you are using. And whether your operating system is 32-bit or 64-bit as with this I can provide you with accurate information.
Which Windows operating system am I running?
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Please re-post with the requested information and I would be happy to provide you with assistance. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

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Hi everybody, this issue is driving me nuts!
I've browsed all the sections on this forum and numerous threads and still no dice... Here's my issue:
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Hi Clarinet187,
Welcome to Lenovo Community Forums!
As per the query you are facing issue with screen brightness for your ThinkPad T500.
Please go to start and type device manager, open device manager and check if there is any yellow mark in any of the adapter.
Please click here to get the complete steps on the issue.
Hope this helps.
Best regards,
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Hello myizham,
Welcome to the HP 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 understand you are having issues adjusting the screen brightness on you HP Envy 23 Beats Edition All in One PC. I would be happy to assist you, but first I would encourage you to post which operating system you are using. And whether your operating system is 32-bit or 64-bit as with this I can provide you with accurate information.
Which Windows operating system am I running?
Is the Windows Version on My Computer 32-bit or 64-bit?
Please re-post with the requested information and I would be happy to provide you with assistance. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

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http://www.linlap.com/wiki/hp+probook+4510s
http://www.linlap.com/wiki/hp+elitebook+8460p
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Hi @gsh987 ,
Thank you for visiting the HP Support Forums and Welcome. I have looked into your issue about your HP Notebook and the brightness control on Windows 8.1 not working correctly after an update. I would uninstall all the display adapters that are in the device manager and restart the Notebook. Check to see if if it put an adapter back in , right click on the driver and update.
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I would be happy to assist if needed. How Do I Find My Model Number or Product Number?
Please let me know.
Thanks.
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 to say “Thanks” for helping!

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Why not adjustable screen brightness?

I had lenovo n580a recently with Windows 8 with 64bit preloaded.I got bored with Windows 8 hence downgraded to Windows 7 Home Premium 64bit.
Windows 7 worked very fine after installing the device drivers except for the LCD brightness that doesn't respond to any fine adjustments.
In the main page of Windows Power Managemet as well as the keyboard hotkeys, the slider either goes to the maximum or minimum brightness (no stages in between though in Windows 8 there were more than 6 stages)
In the advanced settings screen, as far as I adjust brightness (for example to 50% on battery, 70% plugged in) this doesn't lead to any change in the brightness practically.
How to solve this?

Go into the control panel and then to the admin tools and then to services. See if Adaptive Brightness is turned on. Also check in your device manager in the control panel and make sure your device driver for your monitor is correct.
Hoov
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This is a known bug in the power manager logic within fedora 15. They are testing the package before it makes officially to the repository.
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Cheers and regards,
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I am a volunteer here. I don't work for Lenovo

Lenovo P400 cant adjust screen brightness

Updated to windows 8.1 and now can not adjust my screen brightness on my Lenovo P400. I tried updating the display driver through the device manager and it told me there were no available updates.

Hi,
Have you tried the method above for test?
Generally speaking, this problem probably caused by Graphic driver problem, please check and make sure your Graphic driver is compatible with Windows 8.1.
In addition, also make sure your motherboard and chipset driver was upgraded to be latest.
If possible, also please upgrade your BIOS to be latest.one
Be warned.
Flashing BIOS is a risky process. If power is interrupted during the update your machine will be rendered unusable.
Roger Lu
TechNet Community Support

Re: Satellite L855 and Windows 8 - can not adjust screen brightness

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