Re: [LAU] eee and supercollider3

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
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Received on Wed Nov 26 16:15:03 2008