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Paper Tape
Posts: 11
Registered: ‎11-23-2011
Location: Beirut
Message 11 of 44 (1,495 Views)

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

I have the same problem here with an E420. I think I've got the latest bios update (from 22 nov) and the latest video driver, but when I switch to my dedicated video card, I cannot change brightness. Otherwise, it works fine with intel hd. Have any other updates come up yet?

It's rather paradoxical if you compare these driver problems with linux from the end user's perspective. I really had more headaches trying to solve all sorts of driver problem with switchable graphics, screen brightness, touchpad and so on than in KDE4, which is much less attentively done than windows 7.

Punch Card
Posts: 27
Registered: ‎11-22-2011
Location: Poland
Message 12 of 44 (1,449 Views)

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

I have E420, but I upgraded to latest BIOS, no change in this matter.
Punch Card
Posts: 18
Registered: ‎09-17-2011
Location: Melbourne, Australia
Message 13 of 44 (1,383 Views)

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

Any timeframe on when this issue will be resolved Jamez?

 

 

Lenovo Staff
Posts: 3,816
Registered: ‎07-11-2010
Location: Malaysia
Message 14 of 44 (1,335 Views)

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

No dates have been given by the engineering team yet. Will keep everyone posted when I have news.
Lenovo Staff
Posts: 3,816
Registered: ‎07-11-2010
Location: Malaysia
Message 15 of 44 (1,314 Views)

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

@All,

Engineering revert the following.

Tested on 1143-3MG with HD6630M. Driver version 8.811.1.5000
F7 and F8 function are correct, change of brightness isn displayed graphically on the screen.
BIOS version: 8HET30WW (1.12)
Hot key version: 3.70.0003

Updated VGA driver to 8.840.7.3000
F7 and F8 function are correct, change of brightness isn displayed graphically on the screen.
Customer should try to reinstall Hotkey version 3.70.0003 and check all four packages.

//JameZ
Punch Card
Posts: 27
Registered: ‎11-22-2011
Location: Poland
Message 16 of 44 (1,312 Views)

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

I'm not sure what should I do regarding what JameZ said. On our notebooks brightness control doesn't work at all by F7 anf F8 keys. What's the Hotkey exactly ?? 

Lenovo Staff
Posts: 3,816
Registered: ‎07-11-2010
Location: Malaysia
Message 17 of 44 (1,289 Views)

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

Punch Card
Posts: 27
Registered: ‎11-22-2011
Location: Poland
Message 18 of 44 (1,275 Views)

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


JameZ wrote:
Gregi,

Am referring to this one.

http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS014985

//JameZ

Installed, but unfortunately still doesn't work on dedicated graphics...

What's DOS?
Posts: 1
Registered: ‎12-06-2011
Location: MOW
Message 19 of 44 (1,265 Views)

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

[ Edited ]

Tested on NZ346RT with Intel HD Graphics 3000. Driver version 8.15.10.2559
F7 and F8 function are NOT correct, pressing this keys cause display graphically on the screen, but nothing else happend.

Brightness does not changed.

BIOS version: 1.22 (8HET40WW) / 1.09 (8IET36WW)
Hot key version: 3.70.0003

Lenovo Staff
Posts: 3,816
Registered: ‎07-11-2010
Location: Malaysia
Message 20 of 44 (1,232 Views)

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

@Gregi,

Do you set it to dedicated GPU only in BIOS? Appreciate if you can explain how do I set it to dedicated GPU only as I do not have the newer generation of EDGE systems.

//JameZ
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