Mouse problems with display port 1.2 in MST (4K display)

With macOS Sierra, there is strange thing with 4K display connected via DisplayPort in DP 1.2 MST mode (required for 60Hz refresh rate).

As the screen is split into two sub screens in this mode - mouse behaved differently on every half of the screen. It seems that right side of the screen has mouse offset of around 50 pixels.

With standard DP 1.1 mode there is no such phenomenon.

My hardware is: MacBook Pro 15" Late 2013, display: DELL UP2414Q

Br,

Pawel.

MacBook Pro (Retina, 15-inch, Late 2013), macOS Sierra (10.12)

Posted on Sep 23, 2016 2:30 AM

99 replies

Feb 15, 2017 7:38 AM in response to Pawel Guraj

I have the same issue using a MacBook Pro (Retina, 15-inch, Mid 2014) and ASUS PQ321 4K display running 10.12.3.

Feb 23, 2017 5:51 AM in response to Pawel Guraj

Update: Latest Beta 10.12.4 (16E163f) - problem still exists 😠

pxlr

Level 1

4 points

May 19, 2017 12:32 AM in response to pxlr

deleted

sushiman

Level 1

19 points

Jun 4, 2017 1:27 PM in response to Pawel Guraj

I finally just "upgraded" to Sierra and now have this problem as well, running a Dell UP2414Q off a 2013 Retina MacBook Pro. It is driving me nuts. Argh!

sushiman

Level 1

19 points

Jun 4, 2017 2:53 PM in response to genamariaelena

Thanks. I also posted a customer feedback bug report today, linking to this discussion.

Jun 18, 2017 2:05 AM in response to sushiman

Quick update: no answer yet from Apple on my support case after sending diagnosis info.

Any one trying new macOS betas?

ctrip

Level 1

12 points

Jul 13, 2017 12:45 PM in response to genamariaelena

Has anyone tried High Sierra beta? Is the issue still there?

ctrip

Level 1

12 points

Sep 26, 2017 2:29 AM in response to tmoldenhauer

The problem persists in High Sierra. It doesn't happen until you put the computer to sleep. Going back to El Capitan 😟

joevt

Level 1

5 points

Oct 22, 2017 4:39 PM in response to genamariaelena

I haven't seen the issue since before High Sierra 17A405 and 378.10.10.10.15.117 (web drivers). I'm using High Sierra 17A405 and 378.10.10.10.15.120 (web drivers) now.

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Mouse problems with display port 1.2 in MST (4K display)