🌙 When MetaGrid can't connect to your machine through USB after computer restart/sleep

Support & Troubleshooting
1

We’re aware of an issue affecting MetaGrid Pro when connecting via USB after your computer wakes from Sleep mode, which may prevent detection. As a temporary workaround, please follow these steps:

  1. Quit MetaGrid Pro on your iPad.
  2. Unplug the USB cable connecting your iPad to the computer.
  3. Replug the USB cable back into your iPad.
  4. Restart MetaGrid Pro.

This should restore connectivity. We’re actively working on a fix and appreciate your patience. Thank you!

3

Hi Admin,

Any updates on this issue?

Having to unplug and reconnect three iPads repeatedly is frustrating.

The main problem:

  • Sometimes not all iPads connect—e.g., two connect, but the third doesn’t.
  • This forces me to disconnect everything and start over until all three connect successfully.
  • Occasionally, I have to quit and restart MetaServer while all iPads are connected to re-establish the connection.

It feels like a trial-and-error process, and it would be great if there was a more reliable way to ensure all iPads connect consistently.

Is there a fix or workaround for this?

Thanks!

4

I run 2 iPads with MGP and it is frustrating indeed. Every time I launch MGP or Metaserver the results are different. 1 iPad connects, 1 doesn’t OR 1 iPad finds a USB the other one doesn’t OR both find a Wi-Fi connection OR neither find any connection OR 1 finds Wi-Fi and the other finds USB . Quite maddening, as to get them to connect I must unplug/ plug 1 or both.
And then sometimes (very rarely) both just connect. Which makes it even more maddening because then I know how nice it would be if it just worked all the time.

5

Investigating on this as we speak on various test systems.

6

Often when launching Metaserver I get the blue bar ‘Connecting’ animation on both iPads followed by 1 iPad connecting and the other iPad says ‘Connection Failed’. Almost as if the connection of one iPad is disrupting the connection of the other.
Also, when launching Metaserver I get 1 iPad ‘Scanning’ while the other says ‘Connecting’.

7

Hi guys developers,

The same situation here via USB, in upcoming update 1.7.0 PLEASE make USB connections stable! ( Refreshing, unplugging, number of times , good application but drives me mad sometimes ).

3 Likes
8

I think I have a similar issue, but a worse issue. Things were working fine with the latest 1.6.165.25716 metagrid pro and 5.1.8 metaserver. Now I can’t connect through USB at all.

I put my main pc to sleep and it stopped seeing my USB machine. So I tried restarting both apps in both orders without success. Then I re-added the computer using the QR code and it sees the computer name but says “can’t find this computer on your network”. Manually re-adding doesn’t fix it.

So now I’m unable to connect via USB at all since putting my computer to sleep.

It does find it via wifi if I turn off usb, but USB is critical for me given security needs. I require a USB connection to be stable in different security environments.

It’s showing the USB network in the console only and won’t let me connect. I tried another port as well, but given it shows the connection in the console it appears something is wrong with the apps themselves.

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9

As mentioned a couple of time here on the forum:

USB connection after sleep / hibernation – explanation and workaround

After the Mac or iPad wakes from sleep or hibernation, an iPad connected to MetaGrid Pro via USB may no longer be visible in MetaServer and the connection cannot be re-established.

This happens because MetaGrid Pro uses Apple’s USB networking system. In some sleep / wake scenarios, macOS and iOS do not correctly re-initialize the USB network interface for the iPad. When this occurs, the operating system itself no longer exposes the iPad as a USB network device. Since the device is not visible at the OS level, MetaServer has nothing to connect to.

This is not a MetaGrid Pro configuration issue and it cannot be fixed from within the app alone. The USB connection must be re-initialized by the operating system.

What to do

In most cases, the connection can be restored with one of the following actions:

  • Quit MetaGrid Pro on the iPad and restart and MetaServer on the Mac, then unplug and reconnect the USB cable

  • If that is not sufficient, unplug the USB cable first, make sure the iPad is unlocked, then reconnect it and relaunch MetaServer and MetaGrid Pro

Often, simply unplugging and plugging the USB cable back in after waking the system from sleep is enough to restore the connection.

Also make sure you are not using long USB cables and unpowered USB hubs - these can make things difficult.

@aaronbrownsound email us at help@metagrid.app if you are sill experiencing issues.