Mouse cursor lags with external monitor

I'm running 10.9.4 and Logitech Control Center 3.9.1 and also has the lags.

When I have no monitor connected, the mouse cursor is smooth without any problem, but when I connect my Dell U2713HM the mouse is laggy almost every 10s. In Logitech Control Center and Unifying SW I can see that mouse is active and when I see lag on the screen in the software shows mouse inactive..

Is there any new solution?

Turn off 'Enhanced' setting in the monitor's own display options. It's not going to make it perfect, but it fixes the jaggedness...

Hi, I have a very similar issue, although the problem only occurs when the external monitor is powered off (or displaying input from another source whilst still connected to my Macbook.)

I have a Late 2013 13" Retina Macbook Pro running the latest Mavericks (10.9.4) and I connect it to a BenQ GL2450H monitor using a HDMI cable via the Macbook's dedicated HDMI port. I also connect the monitor to a PC via the DVI input, and regularly switch the monitor between the two sources. This was working fine until very recently.

However, over the last few days (since the 10.9.4 update I think) if I turn the monitor off, or switch it to the PC, the mouse on my Macbook keeps freezing up (in fact, I think it's the display itself that is freezing, rather than the mouse which appears to 'jump' every time the display recovers.)

As soon as I switch the monitor back on / change the input source back to my Macbook, everything works perfectly again! Literally the second I hit the power switch in the monitor, the Macbook is restored to normal operation. If I power off again, the freezing starts once more. As far as I can tell, the Macbook is running perfectly normally otherwise, even when affected by the freezing issues. There are no processes eating up all my CPU / RAM. I've also tried resetting both the SMC and PRAM.

Has anyone else encountered this issue?

Thanks,

James.

Yep, I have exactly the same problem as you have!

I have connected 24" Samsung SyncMaster 2443 via HDMI-DVI and when I turn it off, my mouse is laggy and freezing constantly.

It's quite irritating

MBP Late 2013 Retina 15" latest OS X

It certainly is irritating 😠

Out of interest, are you 100% sure it's the mouse freezing and not the display freezing?

In my case, I think it's actually the display that freezes, and when it un-freezes, the mouse pointer will suddenly jump to its actual current position (given all the mouse movements I made during the freeze.)

Try this: have some animated content playing in a window (e.g. a video) and then turn off the external display. In my case, the video also freezes when the mouse 'freezes'. When I turn the display back on again, the video will suddenly jump forward, suggesting it was playing fine during the freeze, and it was just the display updates that were frozen.

Also - did you have this problem before you updated to 10.9.4?

Yes! You are right, in this situation the monitor is frozen

Thanks for testing that! Sounds like you have exactly the same issue as me.

When did this problem start for you? I'm pretty sure I only starting seeing issues after installing 10.9.4 a few days ago.

I'm not sure. I have my MBP just for 2 weeks now. When I connected my monitor at first, I just get strange lagging mouse cursor from my Logitech Performance MX . No change after update and than after few days it disappeared. Now I noticed the same problem as you have

Maybe Apple fixed your first issue in 10.9.4 but also caused the new issue!!

Thanks for your replies, it's useful to know someone else has the same issue.

Yes, that is very likely..

Anyway I hope that Apple will fix this bug soon. I don't want to wait for Yosemite and hope that everything will be working flawlessly..

I have reported the issue to Apple using this page:

https://www.apple.com/feedback/macosx.html

Hopefully someone will take it seriously!

I have the exact same problem as you describe, two monitors connected.

"Solutions" so far

Tried every possible solution. I'm only able to make the mouse stop lagging/freezing by disconnecting and having only one active monitor (or mirror) but as soon as I go more than one (dual or more, extended display) the problem comes back.

So it's obviously has something to do with the graphics card or drivers. I'm very scared this might be a hardware problem. 😢

Only temporary fix is to restart, but if you put it to sleep or change the display setup the problem will come back.

OS X or not?

10.9.4 did not fix this problem, just the same as it was in 10.9.3.

I don't know if this problem was on earlier OS X releases, since I just got these two monitors.I really hope this is software related...

Well, just experienced the mouse lag/freeze after a fresh restart. Had to restart again to make it go away.

Very frustrating!

Ok guys, this is really strange. I seem to have fixed the problem!(or at least mine)

This is my setup:

MBP Retina 13" - Late 2013

1x LG 24" (24MP76) bought 2 months ago

1x LG 24" (24MP76) bought a week ago, seems to have a newer firmware or revision

The HDMI->MiniDP cable was connected to the "older" display.

The HDMI->HDMI cable was connected to the new display.

By switching the HDMI->MiniDP cable to the "new" display, the problem disappeared. I'm unable to get the cursor lag again.

I've tried putting the computer to sleep, shut down the monitors, change display setup in System Preferences. Unable to get the cursor freeze/lag again!

Well, experiencing this too.

Setup:

OS X 10.9.4

Macbook Pro 15" Late 2013 with nVIDIA chip

miniDP to VGA adapter i just bought today

an LG W2452T as external monitor

I'm gonna test this with a Samsung and another Monitor by a dead brand i don't even know the name of anymore just to be sure it's not my monitor acting up. Although, i had it connected to a linux desktop some days ago.