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A
Andrea5C80
Known Participant
January 16, 2021
Question

PS flickering on external monitor

  • January 16, 2021
  • 7 replies
  • 3390 views

Hello, I use a MBP 16" with i7 6 core processor, AMD Radeon Pro 5300M 4 GB and 16 GB of RAM. All my SW is up to date. I also use a Benq GW2480-B coonected over a cable by iVanky, USB C to HDMI, model LANVADA-C31. None of all other apps I used give this issue: Luminar 4, C1 express, Aurora HDR 2018, BR o LrC. I did not try with Gimp or Affinity Photo.

I tryed to connect the Mac to my TV, with the same cable, same issue. I doubt it is a the cable since the problem is relate only to the picture, not to the interface.

Here is a link to a video that is showing the problem: youtu.be/we_uBvQSlTk

I restore Mac OS completely: ko. I cleaned tro clean everythyng with cc cleaner tool and reinstall all again: ko. The Adobe support suggested to disable the GPU use in PS, but this is a problem for me since I need the liquify filter.
Any idea?

This topic has been closed for replies.

7 replies

A
Ahammad0101
Participant
November 27, 2021

I Think i found the problem. I use my laptop and external monitor. when they are both on at same time, the screen flickering happens on my internal monitor that has integrated amd graphics and the screen wont flicker on my benq secodary monitor with nvidia graphics . if i close my laptop lid, the external monitor graphics card becomes integrated amd graphics and then the screen flickers whien i use hardware accelerated features like pan zoom and other filters. the issue is with graphics card 

A
Andrea5C80Author
Known Participant
November 27, 2021

Dear Ahammad, thanks for your contribution. As far as I know external monitors are not graphic accelerated, are you sure yours is? I think the issue is related about having external monitors in general. Mac OS don't like them a lot. If you close the lid it is considered as one monitor and this solves the issue.

NB, colourmanagement
Community Expert
NB, colourmanagementCommunity Expert
Community Expert
September 13, 2022

I never had issues with external displays on mac, even on MacBook with the lid open. I suspect the cable. I've had success with Startech.

 

I hope this helps
neil barstow, colourmanagement net :: adobe forum volunteer:: co-author: 'getting colour right'
google me "neil barstow colourmanagement" for lots of free articles on colour management

KR Seals
Community Expert
KR SealsCommunity Expert
Community Expert
January 28, 2021

Glad you got the flickering taken care of. That was one of my first suggestions.

Start a new topic on the forum about the color issues. No one is going to see this under it's current title.

Ken Seals - Nikon Z 9, Z 8, 14mm-800mm. Computer Win 11 Pro, I7-14700K, 64GB, RTX3070TI. Travel machine: 2021 MacBook Pro M1 MAX 64GB. All Adobe apps.
A
Andrea5C80Author
Known Participant
January 27, 2021

I solved the issue by changing the cable, now it stopped flickering. I move to a Belik cable, no more USB-C to HDMI but USB-C to Display Port. It's more expensive, but worth it.
Not, an issue is still left. Whenever I start postproducing an imagine I do it with LrC. No problems there. As soon as I ask the program to continue modify the picture in PS, the same picture in PS looks terribly differing (saturation up). If I open the liquify too, it looks normal. If I open Luminar 4 as PS plug-in it looks normal. I need to chek how it looks with Camera Raw but, in any case, in PS with the new cable coming from LrC. Any idea?

KR Seals
Community Expert
KR SealsCommunity Expert
Community Expert
January 20, 2021

I'm not sure... I can't check it right now.

Ken Seals - Nikon Z 9, Z 8, 14mm-800mm. Computer Win 11 Pro, I7-14700K, 64GB, RTX3070TI. Travel machine: 2021 MacBook Pro M1 MAX 64GB. All Adobe apps.
KR Seals
Community Expert
KR SealsCommunity Expert
Community Expert
January 19, 2021

I use that DP adapter on my MBP 16" for the connection to my 24" external Dell monitor and it works just fine.

Ken Seals - Nikon Z 9, Z 8, 14mm-800mm. Computer Win 11 Pro, I7-14700K, 64GB, RTX3070TI. Travel machine: 2021 MacBook Pro M1 MAX 64GB. All Adobe apps.
A
Andrea5C80Author
Known Participant
January 19, 2021

Which adapter exactly?

KR Seals
Community Expert
KR SealsCommunity Expert
Community Expert
January 17, 2021

I would be very suspicious of the cable or the port on the MBP or monitor. Have you tried all of the USB-C ports? Same problem? I would try another cable before anything else. I'm using an old Dell external monitor with my MBP 16" through and adapter dongle. No problems like your.

Ken Seals - Nikon Z 9, Z 8, 14mm-800mm. Computer Win 11 Pro, I7-14700K, 64GB, RTX3070TI. Travel machine: 2021 MacBook Pro M1 MAX 64GB. All Adobe apps.
    A
    Andrea5C80Author
    Known Participant
    January 17, 2021

    Hello, I did not try with another cable though I did try to change the port to the second one on the same side of the Mac: KO.

    I doubted it was a cable problem since I thought if it was it should hit al programs and also PS interface, whereas it hits only the picture side and it's even intermittent.

    I am ready to buy another cable and try it out though, can you suggest anything? Thank you 

    A
    Andrea5C80Author
    Known Participant
    January 16, 2021

    I tried to change the external monitor settings in Mac OS as well, both color profile and frequency: KO

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