Become a MacRumors Supporter for $25/year with no ads, private forums, and more!

zhenya

macrumors 604
Jan 6, 2005
6,838
3,558
Does the patch not work if you have already upgraded to Sierra?

I bought a 4k monitor and hooked it up with the provided HDMI cable and the Apple Digital AV Adapter. I only have 4k at 30 Hz as an option - no options for hi dpi scaling. If I use a software solution, I can have 1080p hi dpi at 30 Hz.

I tried the patch (and disabled SIP first using the instructions on the 9to5 site) but it gives me multiple error messages when I run it in terminal (I gave it permission with chmod +x first).

I was hoping that Sierra would give me various hi dpi options (1440p would be perfect) without needing to patch anything. Is there something else I should try before returning the monitor?

(This is the monitor if that matters)

I think the HDMI port is what's limiting you to 30hz here.
 

Precursor

Cancelled
Sep 29, 2015
1,091
1,066
Istanbul
My theory is that there is some trickery with macOS 10.12.1 and the 21.5" UltraFine version (only) that allows for 4K @ 60Hz from a MacBook with no hacking.

I thought 27UD88 also worked 4k@60Hz with the USB-C cable that comes with it after the OS update
Plus, are we sure the new 21.5 inch is not TB3? If it is, it won't work with rMB at all
 

BeatCrazy

macrumors 68040
Original poster
Jul 20, 2011
3,026
1,796
I thought 27UD88 also worked 4k@60Hz with the USB-C cable that comes with it after the OS update

Interesting. So you think the 27UD88 works at 60Hz with the 10.12.1 update? Any more discussion around this? There is no reference on the official support page: https://support.apple.com/en-us/HT206587

Plus, are we sure the new 21.5 inch is not TB3? If it is, it won't work with rMB at all

Yes, we are sure of this. According the Apple support page, it specifically says it works with MacBook w/USB-C port.
 

bluewooster

macrumors member
Jul 18, 2007
86
22
I think the HDMI port is what's limiting you to 30hz here.
Do you mean that I should use an HDMI to DP cable or that I should use a dongle that accommodates DP (and avoid HDMI altogether)? I was using a 2.0 HDMI port on the monitor (and assuming the cable was as well).
 

zhenya

macrumors 604
Jan 6, 2005
6,838
3,558
Do you mean that I should use an HDMI to DP cable or that I should use a dongle that accommodates DP (and avoid HDMI altogether)? I was using a 2.0 HDMI port on the monitor (and assuming the cable was as well).

It's a limitation of the version of HDMI used in the adapter AFAIK. I think you need to go direct to DP.
 

Dunbar

macrumors 6502a
Jun 25, 2010
557
114
Los Angeles, CA
There is no trickery required with OSX Sierra. I just tested my 2015 Macbook on my LG27UD88 and it runs 4k@60Hz without the patch.

As far as 4K over HDMI it could either be A) your cable or B) your adapter that is limiting you to 30Hz. Over USB-C it isn't a problem. On my work Thinkpad running Windows 10 on the same 4K monitor it wouldn't do 4K with an HDMI cable. I had to buy a Displayport cable (this Thinkpad has a mini displayport port.)
 
  • Like
Reactions: jeremiah256

bluewooster

macrumors member
Jul 18, 2007
86
22
There is no trickery required with OSX Sierra. I just tested my 2015 Macbook on my LG27UD88 and it runs 4k@60Hz without the patch.

As far as 4K over HDMI it could either be A) your cable or B) your adapter that is limiting you to 30Hz. Over USB-C it isn't a problem. On my work Thinkpad running Windows 10 on the same 4K monitor it wouldn't do 4K with an HDMI cable. I had to buy a Displayport cable (this Thinkpad has a mini displayport port.)

I think you are right - I bought the Apple Digital AV adapter assuming it would work but their own website actually does state 4k@30Hz as maximum. Looks like I'm stuck with it now!

To be honest, the 30Hz doesn't bother me but I was really hoping for a 1440p HIDPI option - do you get this option over USB-C with your LG monitor?
 

el-John-o

macrumors 68000
Nov 29, 2010
1,532
688
Missouri
i haven't kept up, thanks!

it would be cool for someone to try the 21,5" with 12" combo

5-6 weeks wait, yikes

Are the Apple stores setting these displays up? (I haven't been since the announcement). If so, why not just bring your MacBook to the Apple Store and plug it in!
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
32,014
11,745
California
Are the Apple stores setting these displays up? (I haven't been since the announcement). If so, why not just bring your MacBook to the Apple Store and plug it in!
I went to my Apple Store yesterday and all they had from the new announcements was the non-Touch Bar base MacBook Pro and no displays.
 

el-John-o

macrumors 68000
Nov 29, 2010
1,532
688
Missouri
I went to my Apple Store yesterday and all they had from the new announcements was the non-Touch Bar base MacBook Pro and no displays.

Gotcha. My local Apple store got zero jet black iPhone 7 plus models on launch day, but they did have display models. So I was hoping that perhaps the new TouchBar models would be in. But, truthfully, Apple doesn't usually have products available ahead of the pre-order times. What's weird is that the touchbar models don't have a firm "launch date" like iPhones usually do. Just a vague "Ships in two or three weeks". For some reason I was thinking the displays were available now but not so.

I wonder if they are going to get rid of the Thunderbolt/Cinema Displays my local Apple Store currently uses for the Mac Mini and Mac Pro displays, and replace them with LG displays. (With Adapters... of course!)
 
  • Like
Reactions: Weaselboy

Weaselboy

Moderator
Staff member
Jan 23, 2005
32,014
11,745
California
Gotcha. My local Apple store got zero jet black iPhone 7 plus models on launch day, but they did have display models. So I was hoping that perhaps the new TouchBar models would be in. But, truthfully, Apple doesn't usually have products available ahead of the pre-order times. What's weird is that the touchbar models don't have a firm "launch date" like iPhones usually do. Just a vague "Ships in two or three weeks". For some reason I was thinking the displays were available now but not so.

Yeah... I was hoping the same.

I wonder if they are going to get rid of the Thunderbolt/Cinema Displays my local Apple Store currently uses for the Mac Mini and Mac Pro displays, and replace them with LG displays. (With Adapters... of course!)

They had a TBD on display attached to a Mac Pro, but I did not ask if they still had any in stock for sale.
 

bluewooster

macrumors member
Jul 18, 2007
86
22
I think you are right - I bought the Apple Digital AV adapter assuming it would work but their own website actually does state 4k@30Hz as maximum. Looks like I'm stuck with it now!

To be honest, the 30Hz doesn't bother me but I was really hoping for a 1440p HIDPI option - do you get this option over USB-C with your LG monitor?

Sorry to answer my own question but just in case anyone else is having problems with 4k from a 2015 rMB....
I went to Best Buy to return the ASUS monitor as I just couldn't get any scaled resolutions to work with it. While I was in the store, I hooked my computer up to a Samsung 4k monitor that was on display and it worked right away! I bought that and now have scaled HIDPI 1440p working very nicely. It is 30 Hz but that really doesn't bother me (I haven't noticed to be honest). I'm not sure why that other monitor wouldn't work - it was an HDMI 2.0 port and the cable (I assume) was as well.

(This is the monitor I bought)
 

garyleecn

macrumors 6502a
Jul 25, 2014
841
142
There is no trickery required with OSX Sierra. I just tested my 2015 Macbook on my LG27UD88 and it runs 4k@60Hz without the patch.

As far as 4K over HDMI it could either be A) your cable or B) your adapter that is limiting you to 30Hz. Over USB-C it isn't a problem. On my work Thinkpad running Windows 10 on the same 4K monitor it wouldn't do 4K with an HDMI cable. I had to buy a Displayport cable (this Thinkpad has a mini displayport port.)

how did you connect it to get 60hz?
did you use a adapter to use HDMI/DP port or are you just using usb-c connection.
and are you able to chain other usb hubs and get usb3 speed?


seriously thinking about getting one myself, but seems I need both 4k@60HZ and USB 3 connection..

thanks
 

Dunbar

macrumors 6502a
Jun 25, 2010
557
114
Los Angeles, CA
I have a 12" Macbook so I'm connecting it with a USB-C cable. It handles the video and powers the laptop which is nice since it only has one port :) I'm not sure if Thunderbolt 3 supports daisy chaining.
[doublepost=1478142641][/doublepost]
higher PPI? Also try using 1080 hi dpi mode in a 27" display and you'll see how ridiculously big everything will look.

I'm liking 2560x1440 more and more on my 27" 4k monitor. You can easily fit two web browsers side to side.
 

Precursor

Cancelled
Sep 29, 2015
1,091
1,066
Istanbul
how did you connect it to get 60hz?
did you use a adapter to use HDMI/DP port or are you just using usb-c connection.
and are you able to chain other usb hubs and get usb3 speed?


seriously thinking about getting one myself, but seems I need both 4k@60HZ and USB 3 connection..

thanks

You can get 4k@60Hz on 27UD88 through USB-C connection, you get 30Hz on HDMI connection.
 

BeatCrazy

macrumors 68040
Original poster
Jul 20, 2011
3,026
1,796
You can get 4k@60Hz on 27UD88 through USB-C connection, you get 30Hz on HDMI connection.

Do you need a hack for 4K @ 60Hz?

I thought the 27UD88 didn't have native USB-C input, are you using a converter to DP?
 

Precursor

Cancelled
Sep 29, 2015
1,091
1,066
Istanbul
Do you need a hack for 4K @ 60Hz?

I thought the 27UD88 didn't have native USB-C input, are you using a converter to DP?

27UD88 does have native USB-C input and charges the rMB at the same time. Works at 4k@60Hz without any hacks/mods with the latest version of MacOS.
 

BeatCrazy

macrumors 68040
Original poster
Jul 20, 2011
3,026
1,796
27UD88 does have native USB-C input and charges the rMB at the same time. Works at 4k@60Hz without any hacks/mods with the latest version of MacOS.
Wow. But before 10.12.1 the MacBook didn't natively support 4K @60Hz with this monitor, correct?

Now you've got me thinking that this monitor +10.12.1 could start to support the (likely) impossible, 4K @ 60Hz from something like the Late 2014 Mac mini, using TB2->DisplayPort adapter?
 

garyleecn

macrumors 6502a
Jul 25, 2014
841
142
You can get 4k@60Hz on 27UD88 through USB-C connection, you get 30Hz on HDMI connection.
so when you get 4k@60hz, do you still get usb 3? or it will be slowed down to usb 2?

wondering if you can do this,
macbook --usbc-- usb hub w/ passthrough --usbc-- monitor.
 

BeatCrazy

macrumors 68040
Original poster
Jul 20, 2011
3,026
1,796
so when you get 4k@60hz, do you still get usb 3? or it will be slowed down to usb 2?

wondering if you can do this,
macbook --usbc-- usb hub w/ passthrough --usbc-- monitor.
Always going to be slowed down to USB 2.0, unless you're using TB3.
 

kwandrews

macrumors 6502
Mar 7, 2012
317
108
Colorado, USA
I sorely miss my Thunderbolt display. Any ideas if this new LG can run at 60Ghz with the 2016 m5 at 2560x1440? I won't run at 30Ghz and don't want to hack it either.

I'm also considering the Acer H277HU (https://www.amazon.com/dp/B01B64O3M...TF8&colid=1V0HWO5CIWEG3&coliid=I2G20U7G34TS09) as it is USB-C and is native at 2560x1440 and I can use it with my old 2012 MacMini i7 quad core too. BUT, it is not 4k and that's the future and the new P3 on the LG is also VERY appealing. Thoughts?
 
Last edited:
  • Like
Reactions: Wackery

Dunbar

macrumors 6502a
Jun 25, 2010
557
114
Los Angeles, CA
Are you guys reading the responses in this thread? We have already confirmed that the 2015 and 2016 Macbook supports 4K@60Hz with OSX Sierra installed. That means it will run lower resolutions like 2560x1440 at 60Hz no problem.
 

xraydoc

macrumors demi-god
Oct 9, 2005
8,600
2,681
192.168.1.1
I've watched a couple YouTube videos that confirm 4K at 60Hz over direct USB-C to USB-C on at least one LG 4K monitor.

This may have just been the final nail in the 2016 MacBook Pro purchase reason for me. I'm now on the verge of ordering a 2016 MacBook m7 instead.

My wife has the midrange 2015 MacBook. The size and weight make it ideal for mobility. The performace on hers seems to better than my 2.4GHz i5 2013 MacBook Pro - perhaps the GeekBench scores are equivalent (or even slightly lower for the MacBook), but the UI definitely drops fewer frames on the MacBook as compared to the MBP.

I may never connect my MacBook to a 4K monitor, but just knowing its possible with the right monitor gives me peace of mind.
 
  • Like
Reactions: BeatCrazy

JohnnyGo

macrumors 6502a
Sep 9, 2009
931
607
I sorely miss my Thunderbolt display. Any ideas if this new LG can run at 60Ghz with the 2016 m5 at 2560x1440? I won't run at 30Ghz and don't want to hack it either.

I'm also considering the Acer H277HU (https://www.amazon.com/dp/B01B64O3M...TF8&colid=1V0HWO5CIWEG3&coliid=I2G20U7G34TS09) as it is USB-C and is native at 2560x1440 and I can use it with my old 2012 MacMini i7 quad core too. BUT, it is not 4k and that's the future and the new P3 on the LG is also VERY appealing. Thoughts?

At similar price (close to $500) I would go for the LG 4K without hesitation
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.