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Bug with Aggregate Device [message #88391] Mon, 14 November 2022 05:04 Go to next message
MatthieuTibi is currently offline  MatthieuTibi
Messages: 58
Registered: July 2017
Location: Paris
Member
Hello,

I noticed a bug that happens since the last upgrade (MIOConsole 6.1.02 and MHlink Driver 3.0.18) and wasn't present before.

In my configuration I use an Aggregate Device, that uses only "MHLink[45707]", to remap the channel output of some applications. In my case it's Airfoil Satellite that uses that aggregated device, and it routes its output to 19/20 of MIO.

Anyway before the upgrade, everything was working immediately when the computer was booting (see first screenshot).

Now when the computer boots, the "MHLink[45707]" is grayed out, and the aggregate device doesn't work. (second screenshot)
I have to unchek and recheck the box, and it immediately works again.

Could you correct that bug, please ?
Thanks,
Matthieu
Re: Bug with Aggregate Device [message #88393 is a reply to message #88391] Mon, 14 November 2022 13:07 Go to previous messageGo to next message
bj is currently offline  bj
Messages: 609
Registered: July 2011
Senior Member
HI Matthieu,

I tried to reproduce this problem here and was unable to.

If I create an aggregate, and add the MHLink device as a member of the aggregate, the either:

(1) disconnect the device, and then reconnect it, or
(2) shutdown the computer and then restart it with the device connected

when I check the aggregate device, the MHLink device is Enabled, not greyed out, and all the channels are visible.

If I turn off the MIO, then the aggregate device looks like your "not working" screenshot.

I tested this on macOS 12.6 (Monterey).

Maybe you should try deleting the existing aggregate device and creating a new one.

In any case, I don't think this is an MH bug; it might be a macOS bug.

What version of macOS are you running?
Re: Bug with Aggregate Device [message #88394 is a reply to message #88393] Mon, 14 November 2022 13:33 Go to previous messageGo to next message
MatthieuTibi is currently offline  MatthieuTibi
Messages: 58
Registered: July 2017
Location: Paris
Member
Hello BJ,

Thanks for your answer !
I'm using Mac OS Big Sur 11.7.

I already tried to delete and create a new aggregate device, but I have the same result.
And I agree with you it may be a macOS bug...
Re: Bug with Aggregate Device [message #88395 is a reply to message #88394] Mon, 14 November 2022 14:07 Go to previous messageGo to next message
bj is currently offline  bj
Messages: 609
Registered: July 2011
Senior Member
Yeah - it might be a bug in macOS dealing with User-space drivers vs. kernel space drivers. At least it looks like they fixed it in Monterey. I'm sorry - I am npt sure that there is much we can do to change this behavior. It seems like you would either need to update your OS to get the bug fixes or roll back to the kernel driver to avoid the bug.
Re: Bug with Aggregate Device [message #88396 is a reply to message #88395] Mon, 14 November 2022 15:03 Go to previous messageGo to next message
MatthieuTibi is currently offline  MatthieuTibi
Messages: 58
Registered: July 2017
Location: Paris
Member
Ok... There is a 11.7.1 upgrade available, I'll start with that and let you know.
Re: Bug with Aggregate Device [message #88397 is a reply to message #88396] Tue, 15 November 2022 04:50 Go to previous message
MatthieuTibi is currently offline  MatthieuTibi
Messages: 58
Registered: July 2017
Location: Paris
Member
Hi,

The 11.7.1 update doesn't solve the problem.

As I don't want to upgrade to Monterey (I don't have much time to solve the other problems that may happen, even with other applications...), I made an Apple Script to automatically uncheck and recheck "MHLink[45707]" in the aggregate device when macOS starts. So with this workaround everything's fine.

Thanks for your help bj.
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