• pfox
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Topic: ARC USB controller goes offline

Just wondering if there's a solution or some hardward issue - a new RME ARC USB controller for Totalmix likes to go to sleep - that is - loses connection with Total mix at regular intervals...

The fix is to replug the usb at the back of the device.  As you could imagine, a little bothersome, especially when you really need fast access to volume and its not responding!

Drops out, as i say, at regular intervals, every couple of hours at best.

System Win10Pro 22H2
Totalmix 1.98 (2) win32
RME Hammerfall DSP v4.50

Thanks :-)

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP
  • waedi
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Re: ARC USB controller goes offline

For a test I would try with driver update to 462
and Totalmix 2.00 beta 17

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  • pfox
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Re: ARC USB controller goes offline

ok have given it a go will report back thanks

AAVIMT SAS-7K
Win 10 Pro 22H2
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Re: ARC USB controller goes offline

More details about the setup, please Try other usb ports, check power management settings for USB.

Regards
Daniel Fuchs
RME

RME Support's Website

  • pfox
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Re: ARC USB controller goes offline

Yeh, tried it all, power usb options, other ports, latsest driver, latest total mix, everythign latest.  ARC USB still regularly goes off line.  When it does, seems that the totalmix interface also stalls.  Replugging ARC usually gets it back online, sometimes I have to joggle with totalmix to get it to wake up.  Sometimes restart total mix.  etc

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP

6 Reply by pfox (edited by pfox 2026-03-25 04:50:17)

  • pfox
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Re: ARC USB controller goes offline

I've recently noticed it's related to sample rate changes.  Seems to drop out, not exclusively but definately usually, whenever sample rates are changed... any idea how this can be addressed?  Is it usally the case??  You see I change sample rates 10 tmes a day due to doing exclusively mastering.  It's a real bugger!

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP

7 Reply by MC

  • MC
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Re: ARC USB controller goes offline

Sample rate changes can sause CPU load peaks that interrupt for example USB communication.

You could try the latest TM FX 1.991 RC2 (or 2.0 RC 2) as they include some USB MIDI fixes for the ARC USB:

https://forum.rme-audio.de/viewtopic.ph … 72#p250072

Maybe your lucky and it helps. Otherwise see first line...

Regards
Matthias Carstens
RME

MC's Website

  • pfox
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Re: ARC USB controller goes offline

Thanks Matthias for your reply.  I've been running TM FX 2.0.  Is it worth rolling it back to 1.991?  Or is it same/same?
Interesting re cpu load spike resetting usb.  Will have to look into that.

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP

9 Reply by MC

  • MC
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Re: ARC USB controller goes offline

Former post talked about beta 17. So you are now on RC 2?

Regards
Matthias Carstens
RME

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  • pfox
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Re: ARC USB controller goes offline

ok I'll check it out, assumed as I only updated sevaral weeks ago.
It's beta 17, will look for RC2..........

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP

11 Reply by pfox (edited by pfox 2026-03-27 02:27:14)

  • pfox
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Re: ARC USB controller goes offline

Found it at https://www.rme-audio.de/downloads/tmfx_win_20rc2_2.zip
That was cryptic.  I'll post result.

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
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Re: ARC USB controller goes offline

Did that resolve the issue? I've been experiencing the same thing.

  • pfox
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Re: ARC USB controller goes offline

So far so good but early days, only installed Friday, now it's Monday.  Havent' had a chance to give it a good test at multiple sample rates.  I'll report back soon as I've confirmed this solution or otherwise.  Worth trying all the steps above tho as it's no loss.  Let me know if it works for you...

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP

14 Reply by pfox (edited by pfox 2026-03-30 13:22:22)

  • pfox
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Re: ARC USB controller goes offline

Didn't fix shit unfortunately.
I suppose I'll look into "CPU peaks that interrupt USB communication"...
Although Total Mix seems to stall at the same times, not sure if that's because of the ARC, never noticed it before so maybe... (just added ARC to the system recently)

AAVIMT SAS-7K
Win 10 Pro 22H2
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RME Hammerfall DSP
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Re: ARC USB controller goes offline

Bummer. Yeah, I had already tried the stuff above. The only thing that works for me is rebooting.

  • pfox
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Re: ARC USB controller goes offline

Damn.  I generally get away with replugging the ARC and toggling the master fader on Total mix, sometimes replugging again to get them working together again...  Worst case Totalmix freezes and needs to restart.  Never have to reboot whole system tho fortunately or I'd be sending the thing back for sure... 

Pretty hopless all round tho.  Must be some specific error they are not picking up on.  Is definately mostly associated with sample rate changes, most of the time but not exlusively.

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP
  • pfox
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Re: ARC USB controller goes offline

Basically it screws my workflow hard.  So annoying.  You pay good money for best tech and it still screws you

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP
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Re: ARC USB controller goes offline

Seems unlikely for the ARC itself to be the cause. Have you really tried all available USB ports? And another cable as well?

Regards
Daniel Fuchs
RME

RME Support's Website

  • waedi
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Re: ARC USB controller goes offline

pfox wrote:

Basically it screws my workflow hard.  So annoying.  You pay good money for best tech and it still screws you

Do you mean your computer with "best tech" ?
What is this ? AAVIMT SAS-7K
You may try a PCIe USB card

M1-Tahoe, Madiface Pro, Digiface USB, Babyface silver and blue
  • pfox
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Re: ARC USB controller goes offline

AAVIMT is a reputed audio PC builder in Melbourne Australia, supplied for many prominent studios in Australia.  Mine is the third one I've had from him, very excellent reliable systems.  It's getting on the older side by now but still runs well with everything else.  But I guess I'll put RME Hammerfall DSP talking to it's own ARC USB down to my computers fault.  And Totalmix crashing, stalling, losing contact with ARC USB contantly is all my computers fault.

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP

21 Reply by waedi (edited by waedi 2026-05-29 06:43:54)

  • waedi
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Re: ARC USB controller goes offline

Totalmix is crashing ?
Sure you use the newest version 2.02 ? https://rme-audio.de/downloads/tmfx_202_1991_win.zip

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  • pfox
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Re: ARC USB controller goes offline

Nil Difference...

AAVIMT SAS-7K
Win 10 Pro 22H2
Intel Core i7-7820X CPU @ 3.6GHz
RME Hammerfall DSP