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RMA2
Paper Tape
Posts: 5
Registered: ‎12-13-2017
Location: US
Views: 2,218
Message 1 of 10

Yoga 920 Display Brightness control functions not working

Anybody having issues with brightness control on Yoga 920. It was fine until recently. Now when you increase or decrease, brightness bar goes up or down, but no change in the actual brightness.

 

Anybody else having this issue? From windows update, I don't see any recent driver updates.

 

 

RMA2
Paper Tape
Posts: 5
Registered: ‎12-13-2017
Location: US
Views: 2,137
Message 2 of 10

Re: Yoga 920 Display Brightness control functions not working

When I reversed the intel display drivers, it worked for couple of days. Now the brightness doesn't change with function keys.

 

If you tried to increase or decrease using buttons, it goes to default 20% brighness or so. After that buttons don't work. Screen does show brighness bar, but no change. You can use the mouse to drag the brighness up and down to make it work. 

 

Anybody else having this issue?

 

 

MirekT
What's DOS?
Posts: 2
Registered: ‎01-29-2018
Location: US
Views: 2,094
Message 3 of 10

Re: Yoga 920 Display Brightness control functions not working

Same thing here since yesterday Jan 28 2018. Didn't have time to tinker with it yet, but driver is supposedly up to date.
MirekT
What's DOS?
Posts: 2
Registered: ‎01-29-2018
Location: US
Views: 2,077
Message 4 of 10

Re: Yoga 920 Display Brightness control functions not working

I rolled back my monitor/adapter driver and the brigthenss issue resolved. 

Pleasance
What's DOS?
Posts: 1
Registered: ‎01-30-2018
Location: FR
Views: 2,071
Message 5 of 10

Re: Yoga 920 Display Brightness control functions not working

Hi,

 

Same problem here, it happens today. I have no idea what to do and, by looking from answer on the net, I have no drivers to uninstall. 

Amy_
What's DOS?
Posts: 1
Registered: ‎05-07-2018
Location: US
Views: 1,675
Message 6 of 10

Re: Yoga 920 Display Brightness control functions not working

How do you roll back your drivers? I am having this issue too. 

star99
Paper Tape
Posts: 6
Registered: ‎10-20-2018
Location: SG
Views: 1,010
Message 7 of 10

Re: Yoga 920 Display Brightness control functions not working

This seems to have worked for me: https://zitseng.com/archives/17388

 

Basically get the latest Intel UHD Graphics 620 drivers and then making sure Windows Update doesn't try to undo it.

Satti98
What's DOS?
Posts: 2
Registered: ‎04-12-2019
Location: IN
Views: 223
Message 8 of 10

Re: Yoga 920 Display Brightness control functions not working

I too have the same problem even now, in April 2019! To the Support at Lenovo, please fix it.

 

I have updated the driver but how do I ensure that Windows Update doesn't try to undo it?

star99
Paper Tape
Posts: 6
Registered: ‎10-20-2018
Location: SG
Views: 205
Message 9 of 10

Re: Yoga 920 Display Brightness control functions not working

Previous link tells you how.

Satti98
What's DOS?
Posts: 2
Registered: ‎04-12-2019
Location: IN
Views: 181
Message 10 of 10

Re: Yoga 920 Display Brightness control functions not working

Thanks

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