Jack/Natty crashes on "Cannot create thread 1 Operation not permitted" error

[Mike Holstein]

On Mon, Dec 13, 2010 at 11:43 AM, Brian David <beejunk at gmail.com> wrote:

> On Sun, Dec 12, 2010 at 8:05 PM, Ronan Jouchet <ronan at jouchet.fr> wrote:
> > On 10-12-12 08:41 PM, Brian David wrote:
> >> On Sun, Dec 12, 2010 at 4:10 PM, Ronan Jouchet<ronan at jouchet.fr>
>  wrote:
> >>> Hi,
> >>>
> >>> I can't run Jack under Natty, it refuses to start and raises a "Cannot
> >>> create thread 1 Operation not permitted" error. Full log at
> >>> http://pastebin.com/B45WFr0F.
> >>> Help welcome... maybe I just forgot something stupid, maybe this is a
> >>> real issue.
> >>>
> >>> More info:
> >>>    Realtime setup done at installed time
> >>>    Realtime setup confirmed via the Ubustu Controls app (user in audio
> >>> group, memlock, rtprio)
> >>>    Kernels tested: generic, lowlatency
> >>>    Tested under normal user account and with sudo
> >>>    Gear: Edirol FA-66 through a TI PCMCIA card that used to work
> >>> flawlessly under Lucid and Maverick.
> >>>    Natty 20101212 x86
> >>>
> >>> Thanks for your help,
> >>>
> >>> --
> >>> Ronan
> >>>
> >>
> >> One issue I see right away is that you should not be using Ubuntu
> >> Studio Controls to adjust the realtime settings.  Unless things have
> >> changed (perhaps they have), Ubuntu Studio Controls edits
> >> /etc/security/limits.conf, which is the wrong file.  The file you will
> >> want to edit is /etc/security/limits.d/audio.conf.  Because you've
> >> used Ubuntu Studio Controls, there's a chance that you have settings
> >> in both limits.conf and audio.conf, and this can definitely cause
> >> issues.
> >>
> >> Make sure only one of those files has the realtime settings.  Hope that
> helps!
> >
> > Hi Brian,
> >
> > Indeed, both files exist and have different settings, I'm having a look
> > at this.
> >
> > Also, adi from #ffado mentioned several points nedding investigation,
> > I'll test them tomorrow and report here.
> >
> > Thanks for the hint!
> >
> > Ronan Jouchet
> >
>
> Just to clarify, you will want to remove only the realtime settings in
> limits.conf, and not the entire file.
>
>
> --
> -Brian David
>
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JACK runs using the ALSA driver, correct? this problem only happen when
using the firewire driver... ??


-- 
MH
http://www.myspace.com/mikeholstein

http://opensourcemusician.libsyn.com/
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