[LAU] M-Audio Fast Track Pro: unreliable, distorted recording

Ketil Thorgersen ketil.thorgersen at gmail.com
Thu Aug 2 22:30:00 CEST 2018

Den 2018-08-02 22:09, skrev Tim:
> On 08/02/2018 05:29 AM, Ketil Thorgersen wrote:
>> So - dear clever people: Should I abandon the card or do you have 
>> some ideas for a possible solution for me?
>> All the best!
>> Ketil
> Hi list. Talk of intermittent distorted audio, clicks,
>  and pops is really sending up a /huge/ red flag for me.
> This is just a shot in the dark but have you tried running
>  with just one CPU core?
> Also, is the CPU clock throttling turned off, and are
>  certain CPU features such as the Intel Hyper Threading
>  turned off?
> Recall some months ago I had trouble with my PCI Delta1010
>  ice1712-based card. Same issues. Clicks, pops, and
>  after a while, distortion.
> After tough debugging it turns out I must run ONE core only.
> I can dig up the thread but basically that's it.
> Coincidentally, a few weeks later another poster asked the
>  very same question about another brand of ice1712 PCI card.
> I explained the solution, and he replied that it worked.
> It seems to me that if your device works at all sometimes,
>  it should work all the time.
> In my mind this screams out timing errors.
> Certain pointers are drifting with time, and not stable.
> In my case this was because of more than one CPU core.
> I tried affinity settings but it didn't seem to get anywhere.
> Only running one CPU worked.
> I think there's a small gnome taskbar thing that can set
>  the CPU frequencies and cores.
> Ralf helped with command lines to set the number of cores.
> I don't have those commands handy ATM.
> Tim.

Thank you!
Interesting! I will test more tomorrow and let you all know if I find a 
solution (or if I need help to find out e.g what the Gnome thing is called)
All the best!

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