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

hongkongs

Level 1

0 points

Posted on Nov 15, 2013 1:18 PM

I have the same config. 2013 11" Air 8G i7 HD5000 iGPU connected to

a Dell U2913WM over displayport since Sep.

The mouse skip every few seconds. and I was lucky enough to discover the same method as

flo.riano (switch between the "displayport 1.2" in the monitor's settings) so I can using my system *_^

I ask apple about the problem but haven't receive any response.

A few things to note:

1.If connect the monitor to my AIR using DVI converter have no problem.

2.I didn't force EDID to use RGB mode b4 I discover the switching trick. So it shouldn't be related

to the RGB mode issue.

3.It work on my machine if it's running bootcamp with Win7. So the Windows driver is ok.

So most probably a problem with the display system/driver in OSX.

4.My colleague's 2012 mac air connect to my monitor(Displayport) just fine.

5.A PC using ATI 7970 connect via display port have no problem too.

6.Although I believe a display driver update should fix the problem. I also notice EIZO release a firmware for

one of their monitor which seems to have the same problem. So it should be fixable with a monitor firmware update as well.

http://www.eizo.com/global/support/compatibility/fw1_01/index.html

7.This problem appear on different model of monitor from different manufactures, So it's not a problem

with paticular manufacture's problem

If anyone from apple is reading this, please put this in the bug list.

THIS IS A REAL BUG/ISSUE and not some isolated compatibility problem.

Goodluck to us~ 😝

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208 replies

svadj.ru

Level 1

0 points

Nov 1, 2014 7:13 AM in response to flo.riano

I have same issue with mbp 15 mid 2012, os x 10.10 and lg 29um55 connected via miniDP - DP cable. Connect via hdmi don't help and in addition max resolution limited to 1920x1080 instead of 2560x1080.

Two years ago, on os x 10.8, when i connected another full hd monitor via hdmi, mouse lags similarly.

loot

Level 1

8 points

Nov 3, 2014 2:49 AM in response to flo.riano

Same issue...never had this ever before...but a week after upgrading to 10.10 I now have this too..

Mid 2012 Macbook Air 11"

DELL monitor

Logitech USB mouse

nothing helps...will do a clean install of 10.10 next weekend...will report back...

Nov 11, 2014 1:10 PM in response to flo.riano

Same problem here but with a 27 Samsung monitor:

MacBook Air mid 2012

1.7 GHz i5

4 GB AM

intel HD graphics 4000

Samsung S27C350 Monitor

Apple really has to do something. Nearly 10 pages of complains should be enough...

slwry23

Level 1

4 points

Nov 18, 2014 9:34 AM in response to Fuentecito

Fuenticito, that is a great suggestion. I just submitted feedback and I will do so again every time I have the issue, which is several times a day. I created a text doc with the feedback link, and my feedback, which I'll keep open on my desktop to speed up the process. Note that you only get so many characters so be concise. Hopefully, If everyone does this Apple will not continue to ignore the issue.

zomby

Level 1

0 points

Dec 12, 2014 10:31 AM in response to flo.riano

I'm also having this problem with the U28D590 4k Samsung Monitor when using PIP/PBP. It's really annoying. I submitted feedback referencing this thread and I also reccomend everyone else does as well.

Toggling the display port version from 1.2 to 1.1 back to 1.2 only worked the first time I tried it. I turned the monitor off and on and now it doesn't seem to do anything.

This is not a mouse problem. It's a display problem.

zomby

Level 1

0 points

Dec 12, 2014 2:58 PM in response to einzelcode

Actually, after more experimentation, it might be a monitor issue. I'm getting the same behavior in windows also. I'm not sure what is causing the problem. Maybe it's just HDMI lag? The first monitor is connected via DP.

jgpack

Level 1

0 points

Dec 22, 2014 8:28 AM in response to zomby

I am having the same issue with my MacBook Pro (Retina, 13-inch, Late 2013) 2.6 GHz i5, 8GB Ram, Intel Iris 1536 MB graphics card, and a ViewSonic VG2236wm-LED external monitor connected through a DisplayPort > DVI adapter. I also just submitted this to the feedback link.

Jan 18, 2015 5:58 AM in response to James Sinnott

Same problem here with a MacBook Pro (Retina, 13-inch, Mid 2014), OS X Yosemite 10.10.1

At work I try to use a setup with a DELL U2412M and also tried with a Samsung Syncmaster 24" both connected via Thunderbolt -> MDP -> DVI

I reported the issue to Apple via their feedback form and linked to this thread. But I have little hope that this issue will be fixed once and for all in the near future.

Jan 31, 2015 12:20 AM in response to flo.riano

I have Retina MacBook Pro 13' and LG-34UM95-P ultra-wide display with Thunderbolt connector. My Logitech Anywhere MX is terrible, laggy, can not be used when an external display is connected. I use the Magic Trackpad with no problem, no lag, but I can't use all day, because it's pain in my hand. Yes I have tried a Magic Mouse, but it's not ergonomic. I hope to improve the lag, but I doubt it. If I switch to Windows, if mouse lag doesn't change. This is so horrible. I'm not an happy Apple user... Do you have any tips that will help me? Thanks!

Ratina MacBook Pro 13' late 2013, OS X Yosemite 10.10.2

LG-34UM95-P, 3440x1440, Thunderbolt connector

Jan 31, 2015 2:26 AM in response to riddler667

Restarted. MacBook open, but it's still laggy.

BT off, no change.

The display doesn't freeze, just mouse cursor is laggy.

No, this is an old Microsoft Intelli mouse, and a Logitech RX250. Both are s...t.

Trackpad works fine, but uncomfortable. I have a pain in my hand.

There are times when everything is going well, but soon coming mouse lag. I don't know why... This is not the mouse problem, Apple's software is not good. I have used Windows. Any mouse is perfect, no lag, no delay. I'm tired...

Jan 31, 2015 2:40 AM in response to TigerCat-hu

This is definitely an issue that appears when an external monitor is connected. And it is an OS X fault.. really annoying. Did you verify if it is only the mouse cursor or the whole screen that is freezing/lagging?

Jan 31, 2015 9:45 AM in response to riddler667

My Retina MacBook Pro 13' and LG 34UM95-P and Logitech mouse is very bad to use. If I buy a new MacMini or Mac Pro will not be a problem for LG Display and Logitech mouse? It's a lot of money and don't want to problem with lagy cursor again ...

Thank you very much for your support!

:-)

Feb 10, 2015 6:54 AM in response to flo.riano

I found this thread when searching Google about my own mouse skipping problems. I found a solution that seems to work on my setup, thought I'd share it here in case anyone else found value in it.

I have a MacBook Pro (Retina, 13-inch, Late 2012) with Intel HD 4000 1024 MB graphics and a 27" Apple Cinema Display. With a wired Logitech USB mouse plugged in either through the display or in the laptop's own USB ports I observed the skipping issue. Same for using a bluetooth Magic Mouse. Super wierd.

The way that I have resolved the issue is that I plugged the Thunderbolt cable into the port nearest the power adapter.

I realize this sounds a little weird, and I have no idea why it would work, but it does for me. Good luck.

Feb 24, 2015 1:10 PM in response to flo.riano

Well, mouse laging/ skipping also in my case. I use Mac book Pro Retina, Early 2015, 13', OSX 10.10.2, Dell U2410 for external monitor, Logitech M235 wireless mouse. With age old Typhoon wire mouse everithing works OK.... :-/

roman137

Level 1

0 points

Feb 27, 2015 3:18 AM in response to boromir38

The same for me:

Macbook Pro late 2011, 16gb, SSD + Apple Thunderbolt display 27 + latest Mac OS + Magic Mouse + Bluetooth keyboard

- mouse moving not perfect, that's slow down my work process.

No problem on iMac 27.

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Mouse cursor lags with external monitor