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How to tell if rMBP is recognizing my external display(PC Monitor) as TV instead monitor?

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bertone_in

macrumors newbie
Original poster
Dec 21, 2017
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Hello everyone! I've been browsing around different forums trying to find out solution for my fonts, some images and overall experience being ugly on rMBP external monitor (LG27MP55).

I saw some people saying that if rMBP recognizes external monitor as TV it could be the cause of aliased fonts, fuzziness etc.

I'm using HDMI to HDMI connection.

My question is, how can I tell if it is really recognizing it as TV? Thank you everyone in advance!
SCREENSHOT BELLOW!

https://prnt.sc/hrd1xb
 

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The MBP and monitor send information to each other and the Macbook should detect the display's model # using EDID. It also depends on whether you are mirroring the display, changing the external display's native resolution, etc.

You cannot make the MBP detect a "HDTV" as if it wasn't a "HDTV" unless you are able to alter the monitor's driver.
 
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Audit13 said:
The MBP and monitor send information to each other and the Macbook should detect the display's model # using EDID. It also depends on whether you are mirroring the display, changing the external display's native resolution, etc.

You cannot make the MBP detect a "HDTV" as if it wasn't a "HDTV" unless you are able to alter the monitor's driver.
Click to expand...

Hi and thanks for reply!

I'm sorry but I really don't understand you, yes, I am mirroring the display and I haven't changed external display's native resolution.
 
Have you tried selecting "best" option for the display?

You want the desktop to be displayed on both the Macbook and monitor? If yes, the image on the monitor and/or Macbook may not look very good.
 
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When you see screen resolutions displayed as "1080p", "1080i", etc. -- looks like the MBPro is "seeing" your display "as if it were a tv".

Using the HDMI connection probably has something to do with this.

Does the display have a displayport connection? If so, you could try "going into it" that way, to see if it makes a difference.

It -IS- possible to "force" the MacBook to see the display "as a computer display", but it takes some tinkering. The following is from my archives:
===================================================
Download the file "patch-edid.rb" from here:
http://embdev.net/topic/284710#3027030
(download link is in post at above URL)

Put the "patch-edid.rb" file into the downloads folder.

Launch terminal

Type : cd ~/Downloads
(hit return)

Type : ruby patch-edid.rb
(hit return)

Normally, a new folder appear on the Downloads folder with a name similar to (but may not be exactly the same) "DisplayVendorID-5a63"

Move this folder to /System/Library/Displays/Overrides (the system ask for the password)

Remove any and all other "overrides" folders that were already in that folder (you want only the file you just moved there)

Reboot
 
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Audit13 said:
Have you tried selecting "best" option for the display?

You want the desktop to be displayed on both the Macbook and monitor? If yes, the image on the monitor and/or Macbook may not look very good.
Click to expand...
Yes, I already tried "best" option for display and it is same.
And yes, I want the desktop to be displayed on both the MacBook and monitor, I tried without mirroring too but its still the same... :(
[doublepost=1514043932][/doublepost]
Fishrrman said:
When you see screen resolutions displayed as "1080p", "1080i", etc. -- looks like the MBPro is "seeing" your display "as if it were a tv".

Using the HDMI connection probably has something to do with this.

Does the display have a displayport connection? If so, you could try "going into it" that way, to see if it makes a difference.

It -IS- possible to "force" the MacBook to see the display "as a computer display", but it takes some tinkering. The following is from my archives:
===================================================
Download the file "patch-edid.rb" from here:
http://embdev.net/topic/284710#3027030
(download link is in post at above URL)

Put the "patch-edid.rb" file into the downloads folder.

Launch terminal

Type : cd ~/Downloads
(hit return)

Type : ruby patch-edid.rb
(hit return)

Normally, a new folder appear on the Downloads folder with a name similar to (but may not be exactly the same) "DisplayVendorID-5a63"

Move this folder to /System/Library/Displays/Overrides (the system ask for the password)

Remove any and all other "overrides" folders that were already in that folder (you want only the file you just moved there)

Reboot
Click to expand...
Unfortunately no, it does not have DisplayPort connection, maybe some mDP to HDMI cable would work?

I'll try this method with patch right now, thanks, I'll let you know if it works as soon as possible!
[doublepost=1514044278][/doublepost]I downloaded patch, executed it from terminal, new folder was made in Downloads folder as stated, but when I tried to move it to/System/Library/Displays/Overrides there wasn't "Overrides" folder, only "Contents", check SS below.
[doublepost=1514046880][/doublepost]it only shows resolutions from 640x480 up to 1600x900, 1080p, 1080i, 720p and 480p (I used the CMD + Click on Scaled button to make more resolutions appear too )
 

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OP wrote:
"I downloaded patch, executed it from terminal, new folder was made in Downloads folder as stated, but when I tried to move it to/System/Library/Displays/Overrides there wasn't "Overrides" folder, only "Contents", check SS below."

Oops, I found an error in the archived reference file I saved (and posted above).

Go back to the "contents" folder you mentioned above.

Click the downward "disclosure arrow" to view inside

Do you see "Resources"?
If so, go inside it

Do you see "Overrides" now?
If so, double-click to open it (full window, easier to work with)
THIS is where the folder that "got created in the downloads folder" earlier goes.

Try rebooting now.
If it works, go to the displays pref pane.
Your display should now report itself as:
"Display with forced RBG mode (EDID override)"

Sorry for the error.
I'll have to correct my archives!
 
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Hey! I done it following your steps from last message and it reports as stated.
Unfortunately, It's kinda better but far away from good. The fonts are still being rendered like when you connect external TV, not sharp enough and not anti aliased, overall quality 2/5.
 

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"Unfortunately, It's kinda better but far away from good. The fonts are still being rendered like when you connect external TV, not sharp enough and not anti aliased, overall quality 2/5."

Have you tried adjusting the displays "internal" settings?
Maybe something there will help.

I would also check the "General" pane in System Preferences.
What do you have (at the very bottom) for "use LCD font smoothing when available"?
 
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Hey!

Yes, I tried every possible combination, sharpnes/brightnes/contrast/ I mean everything!

use LCD font smoothing when available is checked, I tried unchecking it but it has no effect at all.
 
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