[LAU] Ubuntu slowing down when using Ardour

>* > 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...*>>

Using Unity 2D or 3D? 2D is supposed to use less.

My suggestion: drop Unity, use XFCE instead.

Maybe it helps when you clean up the cache after Ardour crashes?

sudo sync; echo 3 | sudo tee /proc/sys/vm/drop_caches