Color banding with Dell G7

[vinhtq115]

No. You have two PNLF devices in ioreg.

Turns out in config.plist, ACPI/AddPLNF was enabled. I have turned it off and now in IOREG, it only shows 1 PNLF. Is this correct now?

 

[RehabMan]

Turns out in config.plist, ACPI/AddPLNF was enabled. I have turned it off and now in IOREG, it only shows 1 PNLF. Is this correct now?

Looks ok.

 

[vinhtq115]

Looks ok.

Didn't spot that in the beginning so I ended up reinstalling Mojave. Color banding still happens. It also happens in Recovery mode too.

 

[RehabMan]

Didn't spot that in the beginning so I ended up reinstalling Mojave. Color banding still happens. It also happens in Recovery mode too.

Probably EDID issue.

 

[Kuque]

1. Replace it with an 8-bit screen?

2. Or try these parameters?

 

[vinhtq115]

1. Replace it with an 8-bit screen?

2. Or try these parameters?
View attachment 377566
View attachment 377567

Not sure if replacing the panel would work tho. Besides, my warranty hasn't expired yet so I wouldn't risk that.

Could you send me the config.plist which has those parameters? Also, do you experience the same color banding issue with your UHD 630 Mobile?

 

[Kuque]

Not sure if replacing the panel would work tho.

Can be solved.

Could you send me the config.plist

GFX0 / ATY@0

 

[vinhtq115]

Can be solved.


GFX0 / ATY@0

I added those 2 lines in config.plist and rebooted but macOS still report 30-bit. I'm not sure if I have done correctly.

 

[Kuque]

I added those 2 lines in config.plist and rebooted but macOS still report 30-bit. I'm not sure if I have done correctly.

Should be added to the port number.

 

[Kuque]

report 30-bit

Maybe you can use ResXtreme to alleviate the problem.
Adjust the color depth of the screen.