[PlanetCCRMA] Security issue for Jackd
nando at ccrma.Stanford.EDU
Mon May 19 14:30:48 PDT 2008
On Mon, 2008-05-19 at 14:06 -0700, Carr Wilkerson wrote:
> > > -------- Forwarded Message --------
> > > From: John S. Dey <jsdey at mindspring.com>
> > > To: Planet ccrma <planetccrma at ccrma.Stanford.EDU>
> > > Subject: Security issue for Jackd
> > > Date: Mon, 19 May 2008 13:44:40 -0400
> > >
> > > Hi,
> > >
> > > I installed FC9 on Thinkpad t60p. Installation, as reported by
> > > others, went flawlessly. I can run jackd from root but I cannot run
> > > it from user. Message from qjackctl: Cannot use real-time scheduling
> > > (FIFO at priority 10) ... I go into /etc/security/limits.conf and
> > > change jack priority to 90. I have rebooted and jackd still will not
> > > start with the identical message appearing. Any ideas? Thanks.
This was in the moderation queue and Carr forwarded it to me (so it has
not made it out yet :-)...
Anyway, the jack that installs on fc9 is the one from Fedora. It is not
set up to allow you access automatically, you have to be part of a
group. I was actually trying to determine where to go for fc9 wrt
jack... no best choice these days for a stable up to date jack.
Anyway, if you look at /etc/security/limits.conf you will probably see
## Automatically appended by jack-audio-connection-kit
@jackuser - rtprio 20
@jackuser - memlock 4194304
You have to be in the jackuser group...
Or you can change that to:
## Automatically appended by the Planet CCRMA jack-audio-connection-kit
* - rtprio 99
* - memlock 4194304
* - nice -10
and you should have realtime access as any user.
BTW, it is still too early to move to f9 for a complete Planet CCRMA
install. Only for brave testers...
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