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flo.riano Author

Level 1

14 points

Mouse cursor lags with external monitor

hello,

i have just purchased a dell u2913wm monitor with a native resolution of 2560x1080. when connected to my macbook air (with mountain lion) using a mini displayport cable my cursor starts lagging on both screens. basically, when i move the mouse along a line on my desk the cursor results in a very erratic trajectory. this occurs when using a usb mouse and with the integrated trackpad. if the monitor is turned off or unplugged the mouse is smooth again. .

a similar problem was reported a few years ago but somehow the thread is just archived ( https://discussions.apple.com/thread/1965949?start=0&tstart=0 ).

also, i had trouble with the monitor that osx recognised it as ypbpr, so i had to force it to treat it as rgb device, because otherwise the image was unsharp.

on my macbook (mid 2010) running mavericks the cursor is smooth, so the monitor and the cable are apparently not faulty.

MacBook Air, OS X Mountain Lion (10.8.5)

Posted on Oct 24, 2013 12:23 PM

Top-ranking reply

R.Beck

Level 1

4 points

Posted on Nov 21, 2016 10:21 PM

SOLUTION HERE:

Unplug screen connector (In my case mini-dp to HDMI) on the mini-dp end and plug it in again.

I personally use both bluetooth keyboard and trackpad, running OSX Sierra on a MacBook Air early 2015.

This solved the cursor lag after sleep.

Note: The cursor lag is both for the onboard AND external trackpad.

View in context

208 replies

Mar 18, 2014 8:46 PM in response to flo.riano

Same problem here with my 27'' imac late 2009 and a brand new Dell U2713H...

The lagging mouse problem happen on each restart. So I have to toggle the DisplayPort 1.2 state on the Delll monitor. Then I'm able to work normally. No problem at all when I boot the imac with windows 7.

We know that on their web site : Dell recommends Windows.

But, please, give me a break !

hugh2323

Level 1

0 points

Mar 18, 2014 8:57 PM in response to claude117

You don't have to toggle the DisplayPort 1.2 state to temporarliy fix the issue. You will notice if you just go into the monitor menu, move up and down the menu items, and exit, it will fix it just the same.

Mar 18, 2014 9:30 PM in response to flo.riano

Thanks hugh2323, very strange behavior but, using this trick, it will be easier to live with that untill Apple or Dell found a solution ...

JovanRS

Level 1

4 points

Mar 19, 2014 1:52 AM in response to hugh2323

Have you connected power (charger) to macbook or are you using it on battery? I have not noticed problem while on charger (or sleep timeout is too long)

Apr 15, 2014 2:25 AM in response to flo.riano

I was working with Air late 2011 and U2713H and had no problems at all.

Bought recently a new MacBook Pro retina 13 late 2013 and was shocked with U2713H oversharpening and mouse laging. Overshapr was fixed with ruby script, but no luck to fix the mouse....

This is so sad people have to face problems because global producers want to force customers buy products only from them! 😠

Especially I don't like ACD because it doesn't give me all possible settups of U2713H, not even uniformity compensation 😕

Apr 16, 2014 8:41 AM in response to flo.riano

Ok, now it's getting even more frustraded.

Today I've tried my MacBook Pro retina 13 late2013 with NEC PA241w and EVERYTHING was OK!

Same cable thunderbolt=>displayport.
So it means that Apple just doesn't want to make it's products to work with Dell correctly.

Apr 16, 2014 12:00 PM in response to Alex Coderbit

Hello friends. Some new information.

About two weeks ago I sold my Dell 2713H Revision A00 (by reason of the cursor lags) and bought a monitor Dell U3014 (Revision A03, January 2014).

Lags cursor is disappeared!!!!!!!!!!!!

They are no more!!!! I am happy!!!!!!

I understand it all depends more on the revision of the monitor...

Apr 16, 2014 3:06 PM in response to Dmitry118

It means Dell fixed the problem ((

Would owners of 2713 get new firmwire?
not sure...

Apr 18, 2014 5:25 AM in response to flo.riano

I have the same problem with a Late 2013 Macbook pro Retina and 2 Dell U2413.

The mouse cursor is lagging and flickering each 2-3 seconds

2000$ the macbook pro + 1300$ two screens and I can't get a proper result :/

Apr 18, 2014 7:56 AM in response to flo.riano

Ok!
I found solutioin for my setup:

MacBook Pro retina 13 late'13 + Dell U2713H connected via HDMI + patch-edid.rb

Everything seems to work fine now, even after turning all devices on and off again.

If I connect thunderbolt => displaport mouse lags and freezes.

FWIW, neither Dell nor Apple agreed to except and fox this problem ((

Apr 18, 2014 9:17 AM in response to Alex Coderbit

Do you get the full resolution though? (so not limited to 1920x1080)

Apr 18, 2014 2:35 PM in response to lordeagle

2560 full and clear.
HDMI 1.4 support up to 4k resolution, though I'm using a standard hdmi cable ))

Dell0304

Level 1

0 points

Apr 21, 2014 11:55 PM in response to flo.riano

I have a 15" Late 2013 Retina MBP, with two 20" external displays. I am having the same mouse lag issue, but only when the monitors are off. At night the displays hurt my eyes so I would normally turn them off to reduce eye strain. Now I can't do that.

Hopefully Apple fixes this eventually, but it seems like it's been an issue for years so I don't think there's hope.

hugh2323

Level 1

0 points

Apr 22, 2014 3:33 AM in response to Alex Coderbit

Hi Alex,

Can you let us know the exact details of the HDMI adapter you are using, I wish to get one (as I am sure others do to).

Cheers,

Lloyd

Apr 22, 2014 7:28 AM in response to hugh2323

I'm using some sort of no-name cable, the only thing on it that says what it's about is: "High Speed HDMI with Ethernet"!

https://plus.google.com/photos/112261510256843343507/albums/6005122171913178753? authkey=CLvGhLHkgo-uygE

Mouse cursor lags with external monitor