Subject: Re: [linux-audio-user] jackd fails to start: cannot create shm segment /jack-shm-registry (No such file or directory)
From: Jack O'Quin (joq_AT_io.com)
Date: Fri Apr 18 2003 - 19:10:08 EEST
"Ivica Bukvic" <ico_AT_fuse.net> writes:
> Well, the odd thing is that I have the exactly same setup on another
> machine with the same kernel rpm installed and that one has shm just
> fine.
>
> At any rate, according to Mdk there needs to be this kind of line added:
>
> none /tmp tmpfs defaults 0 0
I think your problem is that, for JACK, the mount point should be
/dev/shm. You can use tmpfs for the /tmp file system if you want, but
that does not satisfy JACK's requirement for POSIX openshm support.
> (supposedly tmpfs has replaced shmfs in the newer kernels)
Yes.
> Yet, I am not sure whether this thing has to be mounted explicitly or
> what. On the other machine everything is automatic, but this one is
> giving me all kinds of headaches. Should I maybe recompile the jack, now
> that I've added this thingy to my fstab? What about a reboot?
It does have to be mounted explicitly the first time. If you set up
/etc/fstab correctly, it will be remounted whenever you reboot.
-- Jack O'Quin Austin, Texas, USA
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