[LAU] eee and supercollider3

[andy baxter]

andrea mariquelli wrote:
> Dear Linux fellows,
> Could I ask you something about ASUS EEE and Supercollider3? 
> i have tried to install supercollider on my 701 xandros advanced
> but something doesn't work, this is the screen of the console:
>  
> eeepc-user:/root> jackstart: cannot get realtime capabilities, current 
> capabilities are:
>             =ep cap_setpcap-ep
>      probably running under a kernel with capabilities disabled,
>      a suitable kernel would have printed something like "=eip"
>  
> back from read, ret = 1 errno == Success
>  jackstart: could not give capabilities: Operation not permitted
>  jackd 0.101.1
>  Copyright 2001-2005 Paul Davis and others.
>  jackd comes with ABSOLUTELY NO WARRANTY
>  This is free software, and you are welcome to redistribute it
>  under certain conditions; see the file COPYING for details
>  
> JACK compiled with System V SHM support.
>  `default' server already active
>  
> what's the meaning of this?
>  
> Thanks a lot!
> yours
> lorenzo, coventry, UK
>

You need a 'realtime' kernel. On debian based systems, these are kernel 
packages named something like 'linux-image-2.6.18-rt'. You can also 
compile your own but getting a prebuilt one is much easier.

See here:
http://tapas.affenbande.org/wordpress/?page_id=73
and here:
http://www.alsa-project.org/main/index.php/Low_latency_howto

for more info on what realtime scheduling is and how to set it up on a 
standard linux distro (may be harder in EEE-Xandros)

andy