How to fix screen flickering on LG 5K Ultrafine display  

 

Eightarmedpet
(@eightarmedpet)
Prominent Member
Joined:2 years  ago
Posts: 809
April 12, 2018 10:41 am  

Bit of an edge case here, so not sure how many are effected, might link this thread in my sig for visibility.

For those who are unaware, the LG 5K Displays have a habit of flickering from picture to black screen in W10. For me it only happens on Desktop, so not while in game, so was only a minor annoyance, however I accidentally found the fix...

Switch to best performance as per these instructions...

"Adjust your visual effects settings under Start > type performance > Adjust the appearance and performance of Windows > Adjust for best performance > Apply > OK. Head to the Advanced tab of the same window and ensure that Adjust the best performance of: is set to Programs as well."

performance settings

edit: spoke too soon, appears to still have issues when playing youtube videos.

2017 13" MacBook Pro Touchbar + GTX1060@32Gbps-TB3 (AKiTiO Thunder3) + Win10
2017 13" MacBook Pro Touch Bar + GTX1070@32Gbps-TB3 (Sonnet Breakaway Box) + Win10
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LG 5K Ultrafine flickering issue fix


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theitsage
(@itsage)
Famed Member Admin
Joined:2 years  ago
Posts: 2689
April 12, 2018 12:45 pm  

@eightarmedpet Have you installed the latest Intel graphics drivers manually? There are more Energy settings which allows further tuning of the iGPU power consumption. On the 15" MBP, I need to disable the dGPU and attach the Intel iGPU to the internal display. When not connected to a power source, I would experience flickering. This was resolved when I turned off some power saving settings using Intel Graphics Control Panel.

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Eightarmedpet
(@eightarmedpet)
Prominent Member
Joined:2 years  ago
Posts: 809
April 16, 2018 11:55 am  

I haven't but I will look into it! Are there any concerns around rendering my screen useless (black) if I uninstall all drivers? Apologies if thats a daft question, you know I'm not the most tech of people on here... ;-D

2017 13" MacBook Pro Touchbar + GTX1060@32Gbps-TB3 (AKiTiO Thunder3) + Win10
2017 13" MacBook Pro Touch Bar + GTX1070@32Gbps-TB3 (Sonnet Breakaway Box) + Win10
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LG 5K Ultrafine flickering issue fix


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SE12897
(@se12897)
Trusted Member
Joined:1 year  ago
Posts: 56
May 6, 2018 1:09 pm  
Posted by: theitsage

@eightarmedpet Have you installed the latest Intel graphics drivers manually? There are more Energy settings which allows further tuning of the iGPU power consumption. On the 15" MBP, I need to disable the dGPU and attach the Intel iGPU to the internal display. When not connected to a power source, I would experience flickering. This was resolved when I turned off some power saving settings using Intel Graphics Control Panel.

maybe this is the panel self refresh power saving feature you are experiencing? I noticed this on my HP and it caused my to think my trackpad was lagging when in fact it was the display slowing down the refresh rate and causing this slight flickering


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