Mouse cursor lags with external monitor

For those using HDMI

I wonder if the HDMI output on the rMBP is causing wireless interference? I have a Logitech MX with a USB receiver that doesn't play nice specifically when I use the USB port next to the HDMI output. If I move it to the other side of the rMBP I get no lag. I notice the airport card (which includes bluetooth receiver) is in this corner of the body as well so that might be the source of issue re BT mice -though I get no real lag with a keyboard

It might be coincidence (I don't know enough about how HDMI works) that lag is worse when the mouse is active on an external monitor, but I wonder if it could be the increased data transfer out of the HDMI port interfering with reception when actively using an external monitor?

Of course, this doesn't explain the thunderbolt phenomenon but I don't have a thunderbolt capable display to test.

Buying additional hardware is not the correct solution!

Mid 2012 Mac Air with Vizio monitor having same issue with internal trackpad.

Nothing works.

Why doesn't Apple step up to the plate and help out on these forums?

Would it be so hard on their shareholders?

Glad to see this thread. Have had problems for years with magic mouse bluetooth mouse lag on mid-2010 15 MBP in clamshell mode driving NEC 2490. Works fine w/o the ext display. I was about to buy a new external dispay but seems the problem is my mac/OSX. If I had the space I'd operate in non-clamshell but I don't.

Same problem here as a lot of people are having. iMac using magic mouse connected to external display via Displayport to HDMI adaptor. Everything is fine until I turn off the external display which results in the screen freezing / mouse lagging issue. I've tried the various tips mentioned here but no joy. If I let the iMac switch off the screen itself after a few mins of screen saver and power off the monitor when I return and log in again its fine. This is all well and good if I'm going away for a while but if I'm still using the system and don't want the extra screen on for hours when I'm not using it I have to disconnect and reconnect the Displayport cable when the external screen is off to return things to normal.

Maybe a short cut to switch off the main screen via a keystroke might be a work around for when powering off the external monitor but its far from ideal.

I'm using Yosemite 10.10.4

Fintan

/Edit - Right as a workaround for this issue I found pressing CMD-SHIFT-EJECT will turn off screen without powering off Mac, then switch off your external display and then hit space and you are back in action - but again seriously? having to do this is crazy.

Same problem. Late 2013 Retina MBP. Dell UZ2215H external monitor connected through Thunderbolt hub.

Problem does not occur when using the magic trackpad directly with the laptop.

Apple just replaced the wireless card on my laptop -- and it made no difference.

same here, every 5-7 seconds, the mouse (or more or less whole OS) hangs for a couple of seconds. My set up:

2015 13inch rMBP, El Capitan 10.11.3

Dell U2414H on HDMI, NTSC

The thing is it only hangs if the monitor is switched to an input other than the macbook...

I always use usb port on the opposite side of HDMI port and still have this issue from Mavericks. I have this issue with bluetooth mice, wireless mice, and also wired mice. I'm struggling with this issue since the moment I bought a monitor for my macbook. I have reported this issue several time, no response received. And also have no fix for it in these years. I'm really tired of these issues

PS. macbook 13 Retina (mid 2014)

Hi guys,

I'm having the same issue as most of you. Searching about it I got in this thread.

I have a MacBook Pro (Retina, 15-inch, Mid 2014) with GeForce GT 750M 2048 and a Samsung LU28E590 4K monitor. I tried a lot of solutions described here. If I work with the mac screen opened the issue goes away (I would prefer to work just with the monitor). My issue is with magic mouse one. I tried with a logitech and it happens too. I have a magic trackpad and it works fine.

I was wondering if with magic mouse 2 the problem goes away.

Anyone got a definitely solution?

I've also got this same problem in my new Macbook Pro 15'' 2015 model. I'm using an LG Full HD 24'' monitor. Yesterday when I first connected the monitor it happened for a while and then it seemed to have gone away. Now it seems to be doing the same again. I think if I plug and unplug the monitor it will sometimes go away and other times it will happen. I'm not sure if there's any actual pattern to it.

Same problem with an 26“ Ijyama monitor connected via HDMI to a 2014 15“ Retina MacBook Pro with Intel HD Graphics. Sometimes this setup works for several hours until the cursor suddenly starts freezing and jumping on external mouse and integrated trackpad. Additionally, the external screen turns black for a couple of seconds repeatedly. Unplugging the monitor solves this issue immediately, but plugging it back in will result in the MBP not recognizing the monitor anymore. A reboot does not help, and Windows via BootCamp does not recognize the display either. Same issue with other HDMI cables and other monitors. Only thing that helps is waiting til next day and waking the MBP while the monitor is plugged in. Then the setup will most likely work for 3-5 hours.

New EFI is out, but this problem is not solved 😟

I forgot to mention I had to apply a patch in order to fix the resolution in the first place. But the other problem is independent.

Oh... And if anyone have noticed any processes using more RAM or CPU after hooking up the new display, it could be helpful to leave a note on this to...

No, no white trail for me. All the rest is the same. Can you upload a screenshot with the trail to see what you mean?

Yes, I think it is clear that Apple won't fix the issue anytime soon. As to your question, I go directly from miniDP to DP and have the problem.