[LAU] Ubuntu slowing down when using Ardour

Aurélien Leblond blablack at gmail.com
Sat Nov 17 21:17:17 UTC 2012


> My setup is as follows:

> > - Ardour3 Beta5
> > - Ubuntu 12.10 64bit
> > - Using the Radeon open driver (FGLRX creates a lot of xruns)
> >
> > Now, I am not trying to start a conversation "Should I use Compiz when
> > playing music" or "Ubuntu is crap, what else should I use?" :)
> > I like Ubuntu, I like Unity and I like Ardour3!
> >
> > I am just checking if other people are experiencing the same issue, if
> there
> > is a solution to this problem, what additional testing I should do or
>  what
> > additional information I should provide.
>

> Wonder if the CPU frequency scaling is causing this issue. I had an
> issue on a Dell machine at work where the box would run really slowly
> if it got the slightest bit hot from being pushed too hard (usually
> doing big Subversion commits or running sipp against a remote server).
> The governor would take it down to the lowest frequency level to help
> the machine cool down. This would even happen if I turned on the
> performance governor. It wasn't a Linux issue at all, because people
> who had the same hardware had the same problem on Windows.


The thing is, the CPU never really goes over 40% usage, the rest of the
machine is still working ok, only Unity/Compix are getting much slower.

After much testing, it seems to be only the Ubuntu Unity Dash getting
slower, and only after a crash of Ardour3...
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