Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Replacement rMBP still has issue! Questions for those who don't have the ghosting!
- Thread starter theuserjohnny
- Start date
- Sort by reaction score
Ah, interesting; thank you. I was only able to find references to part # LTH133BT01A01 for 13" MacBook Air Samsung LCDs in my searches. Since those part numbers are roughly the same except for the first 3 characters, I wonder if they are actually the same part and if Samsung has recently changed their part # prefix for some reason?
-- Nathan
I think the IPS vs PLS question could be answered by putting one of these screens under a microscope. The subpixel arrangement must be slightly different.
EDIT: seems like Samsung is also a supplier of panels in the new iPad too?
EDIT: seems like Samsung is also a supplier of panels in the new iPad too?
Last edited:
Heres my samsung screen, its really hard to focus, almost as if the RGB sub pixels are on different layers (and its just a galaxy s2 camera).
Wow, how'd you manage to take that picture?
Looks like it is PLS then!Found this. PLS similar to the new iPad, it seems
Wow, how'd you manage to take that picture?
Just stuck my $5 pocket microscope between the screen and phone cam
I believe the problem is related to gpu. Simply speaking, the retina display is a passive device. It has an input interface and receives data to display from the gpu output interface.
If the folks, who are claiming that their rMBP has no lag/ghost, are neither Apple sales, Fanbois, nor are blurred by the text crispiness, then I could only conclude that not all gpus are overclocked... Also, I don't think the data bus between the gpu and display is the bottleneck...
The over clock is relevant for intensive graphical tasks yes, but the computer doesn't constantly use the 650M.
There are surely some reasons they overclocked the rMBP's gpu and not the cMBP's one... and one of these reasons is likely related to retina display...
I have just gone through THREE Retina MacBook Pros and finally just got my money back. ALL had LG screens.
The first had a dead pixel right in the middle of the screen, yet besides that, everything else seemed ok.
The second had very bad uneven brightness. The right side of the screen was noticeably darker than the left.
The third had uneven brightness, ghosting and image retention.
I finally gave up and just got my money back. I did get them all from Best Buy (yeah I know) so I dunno if Best Buy gets the worst Macs from Apple or what.
Now I am looking to just get a normal 15 MacBook Pro, does anyone know the safest configuration to get that has the best screens? As in Hi-res Glossy or Hi-res anti-glare?
The first had a dead pixel right in the middle of the screen, yet besides that, everything else seemed ok.
The second had very bad uneven brightness. The right side of the screen was noticeably darker than the left.
The third had uneven brightness, ghosting and image retention.
I finally gave up and just got my money back. I did get them all from Best Buy (yeah I know) so I dunno if Best Buy gets the worst Macs from Apple or what.
Now I am looking to just get a normal 15 MacBook Pro, does anyone know the safest configuration to get that has the best screens? As in Hi-res Glossy or Hi-res anti-glare?
Maybe because the rMBP has a much larger battery but the same battery life envelope as the cMBP and overclocking the cMBP would have given it an unacceptable battery life? Maybe the expense of the rMBP let them order higher binned 650Ms for the rMBPs?
I'm not the biggest fan of Apple's "planned obsolescence" practices, but if it was for devious marketing reasons they would have straight out said the rMBP had faster graphics.
On my first replacement due to ghosting/image retention problem..
This second one also has ghosting image problem...it is with LG display and slightly yellow tint...(this tint might be due to less brightness of retina display??)
Anyways, gonna go back to the store and ask for money back.
I really really really wanted to keep MBPr but I just can't justify $3000 for faulty screen. After all I bought this for retina screen.
For the people who have Samsung screens, which date did you purchase the MBPr?
I will probably try to get refund or get another replacement with newly shipped unit?
Such a waste of time on myself and Apple...
This second one also has ghosting image problem...it is with LG display and slightly yellow tint...(this tint might be due to less brightness of retina display??)
Anyways, gonna go back to the store and ask for money back.
I really really really wanted to keep MBPr but I just can't justify $3000 for faulty screen. After all I bought this for retina screen.
For the people who have Samsung screens, which date did you purchase the MBPr?
I will probably try to get refund or get another replacement with newly shipped unit?
Such a waste of time on myself and Apple...
On my first replacement due to ghosting/image retention problem..
This second one also has ghosting image problem...it is with LG display and slightly yellow tint...(this tint might be due to less brightness of retina display??)
Anyways, gonna go back to the store and ask for money back.
I really really really wanted to keep MBPr but I just can't justify $3000 for faulty screen. After all I bought this for retina screen.
For the people who have Samsung screens, which date did you purchase the MBPr?
I will probably try to get refund or get another replacement with newly shipped unit?
Such a waste of time on myself and Apple...
I feel your pain. I got my money back after three attempts myself. All three had faulty LG screens. The first was the base $2199 model, the second two were the higher end $2799 model. All had faulty screens.
What is the HD4k? Is it a device embedded in the retina display? The main function of the display is simply to switch on/off pixels and set their color. I don't think it has the ability or resources to do scaling and projection operations.
On the other hand, I believe the OS has always a logical view of 2880x1800, and depending on the display resolution, it does all the scaling/projection operations through the gpu. These operations are gpu intensive that's why overclocking the gpu makes sense...
Thanks for the clarification
Anyway, what I have said still apply: The gpu is used for projection/scaling operations.
I don't know what is the criteria or threshold that makes the OS switch from the integrated HD4k to GT650M gpu... But using gfxcardstatus application, you can observe that the lag is more noticeable if the HD4k is used...
Fortunate enough to have a perfect Samsung display -- sorry to hear others can't say the same..hope it all works out!
Last edited:
What about lag?
Set your gpu to HD4k with gfxCardStatus, open several applications (for instance 10 safari windows), and start playing around with mission control:
ctrl-arrow up: mission control
ctrl-arrow down: application windows
F9: show desktop
F10: dashboard
Also, define hot corners for these functions and start playing around with your mice.
If you don't observe lags, just launch more processes until you start to notice it, then count the number of apps you've launched and check out free and used memory with Activity Monitor application... Then repeat the same operations with discrete gpu...
I posted this in another thread, but this one is getting more traffic:
I think the LG display has an A-TW polarizer like older professional NEC monitors used to. Advantage is that IPS glow is dramatically reduced. Disadvantage is that it introduces some red/green hues that are particularly noticeable in the corners of the displays (NEC's FAQ on the subject mentions this).
Here are a couple pictures.
First just a direct on shot next to a 20" IPS display. You can see the black levels are fairly similar (the colors are off, but that's because the backlight in the 20" is... old).
Here's a minor angle - you see some glow appearing on the 20" (also since the rMBP is sitting farther away, it's actually at a steeper angle relative to the camera).
Then here's a steeper angle. Notice how the blacks are pretty much not black at all on the 20" display.
Here's an NEC 2490Wuxi compared to an HP LP2475W. Afaik, the panels are the same except the former has an A-TW polarizer.
But as I mentioned, the issue that the polarizer brings is red/green hues, particularly on black screens. This is something which my rMBP has, but now I'm inclined to think it's not a defect. Here's a picture of the effect on an LG display with an A-TW. My rMBP is very similar (though I'd say less pronounced)
I think the LG display has an A-TW polarizer like older professional NEC monitors used to. Advantage is that IPS glow is dramatically reduced. Disadvantage is that it introduces some red/green hues that are particularly noticeable in the corners of the displays (NEC's FAQ on the subject mentions this).
Here are a couple pictures.
First just a direct on shot next to a 20" IPS display. You can see the black levels are fairly similar (the colors are off, but that's because the backlight in the 20" is... old).
Here's a minor angle - you see some glow appearing on the 20" (also since the rMBP is sitting farther away, it's actually at a steeper angle relative to the camera).
Then here's a steeper angle. Notice how the blacks are pretty much not black at all on the 20" display.
Here's an NEC 2490Wuxi compared to an HP LP2475W. Afaik, the panels are the same except the former has an A-TW polarizer.
But as I mentioned, the issue that the polarizer brings is red/green hues, particularly on black screens. This is something which my rMBP has, but now I'm inclined to think it's not a defect. Here's a picture of the effect on an LG display with an A-TW. My rMBP is very similar (though I'd say less pronounced)
It lags a little bit with certain UI animations when running on the iGPU, but no worse than either of my prior two MacBook Pros did. And when I force it to run on the 650M, it's as smooth as can be. The very slight lag when using the integrated GPU doesn't bug me in the least.
----------
I see the EXACT same thing on my LG-paneled rMBP.