Support in other languages: 
Showing results for 
Search instead for 
Do you mean 

Welcome to the Forums!

Welcome to Lenovo's Peer-to-Peer Discussion Community!
Please note our guidelines. How to register and login and Community FAQs.

Help Lenovo Shape the Future of PCs

Take the ownership survey. Share your ideas with our product team

Community Spotlight

Visit the Community Blog

Are you ready for Windows 10?

Get to know Windows 10
Visit the Windows 10 Support Center
Reply
Lenovo Staff
Posts: 3,557
Registered: ‎07-11-2010
Location: Malaysia
0 Kudos
Accepted Solution

E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

Hello All,

 

I undestand some of you are reporting that after ugprading the video driver the adjustment brightness keys are not working properly for the E420s / E420 / E520.

 

Appreciate if you could let me know here. Also please try uninstalling, power manager, power management driver and hotkeys, reboot then install them back.

 

If problem persist, just post here or hit the "Me Too" button.

 

//JameZ

Check out the Community Knowledge Base for hints and tips.


Did someone help you today? Press the star on the left to thank them with a Kudo!

If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!




X240 | 8GB RAM | 512GB Samsung SSD

Punch Card
Posts: 25
Registered: ‎03-31-2009
Location: България, Bulgaria
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

[ Edited ]

I am sorry for the lame question, but where exactly do i find the hotkey patch to uninstall it.

Thanks.

 
Edit:

What i uninstalled, was the Interface driver?! I think that is what controlls the hotkeys or am i wrong.
 

 

2 Edit:

Uninstalled every thing, installed again. Screen brightness can still NOT be adjusted with the F7 & F8 keys.
Only from the Power Options in Control Panel.

 

 

t400s-w520-e420-t43p
Punch Card
Posts: 18
Registered: ‎09-17-2011
Location: Melbourne, Australia
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

Hi Jamez

 

Is there going to be an updated driver to address this problem?

Highlighted
Token Ring
Posts: 98
Registered: ‎06-17-2011
Location: Poland
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

Bump, didn't help, problem is still there.

Paper Tape
Posts: 5
Registered: ‎10-21-2011
Location: England
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

[ Edited ]

I experience the same issue as well.

 

If you release an updated driver, is it possible to incorporate the current ATI driver version?

Fanfold Paper
Posts: 14
Registered: ‎12-12-2008
Location: Australia
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

I got the same problem as well. My machine is E420 (1141)

Lenovo Staff
Posts: 3,557
Registered: ‎07-11-2010
Location: Malaysia
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

@All,

Appreciate if someone could drop me a private message with the following info needed to log a case to engineering on this.

Name:
Mobile:
Email:
MTM:
S/N:
BIOS:
Win 7:
x64 / x86:
Hotkey package:
Video driver:

//JameZ

Check out the Community Knowledge Base for hints and tips.


Did someone help you today? Press the star on the left to thank them with a Kudo!

If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!




X240 | 8GB RAM | 512GB Samsung SSD

Punch Card
Posts: 27
Registered: ‎11-22-2011
Location: Poland
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

[ Edited ]

Hello

Will there be any solution for this ? The problem exists, when system uses Radeon graphics only.

 

Lenovo Staff
Posts: 3,557
Registered: ‎07-11-2010
Location: Malaysia
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

@Gregi,

There is a new BIOS released for the E520. Could you try it and see if it helps.

http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS014906

//JameZ

Check out the Community Knowledge Base for hints and tips.


Did someone help you today? Press the star on the left to thank them with a Kudo!

If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!




X240 | 8GB RAM | 512GB Samsung SSD

Punch Card
Posts: 53
Registered: ‎09-01-2011
Location: Australia
0 Kudos

Re: E420s / E420 / E520 - Unable to change brightness after upgrading video driver to 8.840.7.3000

Nope, new BIOS does nothing.

But if I put brightess to maximum and press F8 (increase brightness) it shows me that brightness is full (15).

And same thing with minimum brighness pressing F7. (Not sure if that was there in the other BIOS)

I still can't change it though.