Mouse and keyboard keep disconnecting

This problem is REALLY a hardware design issue. The cause of these disconnections is the problem "USB 3.0 * Radio Frequency Interference on 2.4 GHz Devices". It is a well known problem, but I AFIRM that it is a hardware design problem because if you install an adapter (dongle usb bluetooth) this problem simply disappears. If a simple adapter shows that it is possible to bypass this interference, why can not the apple hardware? Apple is aware of this problem but will never recognize it!

• USB 3 devices can cause problems with Bluetooth and Wi-Fi
• Apple Support - Resolve Wi-Fi and Bluetooth issues caused by wireless interference

than be surprised.

as I already stated, all worked nicely with High Sierra and with Mojave the problem started immediately. I have nothimg connected different than before or changed. I have even removed a passive USB SDRAM dock to check any issues. there is only a printer connected with USB. that is it. I do not understand, why problems, which can be really easy drilled down to a software upgrade, invite everybody to suggest that it is a hardware issue? Everything worked nicely, a software update comes along and problems start. straightforward. Just that Apple does not respond to that. Please do a NVRAM reset. please do a SMC reset. please remove all electronic equipment from the room. please stand on your head and wink....please do everything so hat we can put the blame somewhere else than in the buggy software...

Mojave stinks and the user is the beast of burden.

Sorry people!

Found the discussion this was part of so maybe that will help you guys.

https://discussions.apple.com/thread/250069764?answerId=250462685022#250462685022

Had been dealing with the exact same thing you were and literally as soon as I deleted the Android File Transfer app, the problem stopped. Perhaps there is a similar app that is causing. I am on High Sierra, but many on this other discussion were on Mojave, so give it a look and maybe that discussion can help.

You can read on report in: https://discussions.apple.com/thread/250404950

If you have the same problem as me (meaning trying all resolution recommended, and still fail. Then it is my believe that this is a driver/software issues for the Bluetooth module (hardware use to connect to bluetooth devices).

My current solution is to get a Bluetooth dongle, I got a Asus branded for US$14.99. Have been using it for the last 3 hrs, and have not experience any connection drop.

Problems persists. Disconnects still occurring. Interestingly, the corded mouse's pointer still works, the mouse clicks don't.

Two lines of thought -

1. Does it seem to happen when Time Machine (in my case through the USB3 to an external Seagate HD) is active? A conflict there?
2. Replacing bluetooth keyboard/mouse with a corded keyboard and mouse - does this eliminate the non-response issue?

If it is the latter, then this will give a strong pointer to where the problem lies.

Oh my!!! Searching once I read your post, Logitech also admits there has been a change!!!

Their new mice are VERY specific about Mac OS version...

Mac: Mac OS® X 10.10 or later

How to check if your device is Bluetooth Smart Ready:

Mac

1. Click on the Apple icon at the top left corner of your screen
2. Select “About this Mac”
3. Click on “System Report”
4. Select “Bluetooth” in Hardware drop list
5. If you see “Yes” next to “Bluetooth Low Energy” then your device is Bluetooth Smart Ready.

Bluetooth gets scrambled easily. For example, if I leave the lid open on my DVD player, the mouse gets twitchy and restarts over and over. Closing the lid fixes the problem.

Now, the new Mac Mini has a much worse problem. The USB and the Bluetooth appear to be using the same power supply. Drawing current off the USB causes the Bluetooth chip to reset over and over. This is very noticeable if the USB device is a hard drive.

I made sure there is no interference and it seems to help, Though my printer didn't connect at some point. Had to power it down and it worked afterwards. Never had any of these issues with High Sierra.

It is getting worse. now, every time I wake up the mac, the pointer sits in the upper left corner and ONLY if I connect an USB mouse, all of a sudden it will also detect the MAC mouse. When I then log in, it will disconnect and connect the keyboard and mouse again.

I did NVRAM refresh, SMC refresh and nothing helped.

I would be extremely surprised if your problem is in your Mac What do you have connected to your Mac? What other electronics devices are nearby? All my Mac problems have ended up being either interference or power shortages. Not one single NVRAM reset, ever.

Yep. I'm in the same boat. Had to get a new iMac as old faithful - 8 years old - stopped displaying and it was replace not repair time. So, with the new one, as others have noted, mouse and keyboard disconnect with annoying frequency. So SMC reset, NVRAM reset, external Seagate drive (for Time Machine) taken off the USB port. Went to Apple store and had machine checked. All hardware showed normal - all green ticks. So we wiped the drive and reinstalled the latest version of all software as the 'genius' deduced it to be a firm/software issue. Because reconnection was occurring and all works okay after that, a hardware issue was ruled out. He said that if the hardware was faulty that (a) it would have shown up on their u-beaut diagnostics and (b) if a part had actually failed it really wouldn't magically fix itself. So home we went and restored from the back-up. Since then, I've been keeping a log of the disconnects and what was running at the time. Suspiciously, when the external hard drive is showing Time Machine activity (that's all it does and is used for), a disconnect is usually there.

So if it persists and can't be fixed, under Australian consumer laws, it is a case of a warranty issue for either replacement/repair or refund. That said, I'd be equally happy to go back to a corded keyboard/mouse as they seem to work consistently. In the case of the 'magic' devices - 'now you see, now you don't' seems to be a common outcome.

In the meantime I am using an 8 year old magic keyboard and a corded Swann mouse. I'll monitor all for at least three-four days and then, if no disconnects show, I'll know where the problem might lie and then bat it back to Apple for them to solve.

I am having the same problems(intermittent failure of Apple BT keyboard and mouse) too, probably since the update to 10.14.2 on dec 12 2018. I did not change the environment (WLAN repeater at channel 6 and DECT phone in the same room), which worked in the months before. Changing the WLAN channel to 11 did not help.

USB mouse and keyboard work. I can reconnect the BT keyboard and mouse via the BT menu - till the next failure. This is a bit awkward, as I always have the BT parts connected to fix the situation.

It would be nice from Apple to acknowledge, that there is a software problem and provide a fix asap please.

I'm working with a dedicated Apple Support person to isolate/analyse and hopefully fix the problem.

At the moment I am running the Mac in Safe Mode and there have been no issues. We tried running a test Administrator and that also worked. Things seem to go pear shaped when I sign in under my normal profile and the disconnects start up again.

I'm not a tech, but, this would seem to give clue where the Apple people should be looking for the conflicts that cause the disconnections to occur, i.e. my profile and what that runs in the background compared to running safe mode and what doesn't run in the background.

The support person I am working with has been very helpful and is quite committed to working out what is happening and why. He is a good representative of the organisation.

I do return to my initial non-solution/solution. I am quite happy for Mr&Mrs Apple to call their two errant children (Magic Keyboard and Magic Mouse) home and to send me a corded keyboard and mouse which, I do believe, will stop my problems. I know that it is not an elegant solution, but if it works and stops the annoyance I'll be happy while Apple sorts things out and sends out a patch/update to fix the issue.

So frustrating!!! I had no issues before the Mojave update. Now my mouse and keyboard disconnect at least 5 times a day. I'm just going to buy a wired mouse and keyboard. This will definitely be my last I-mac.