This is beyond me. Are you running devfs by any chance? I'm copying this message to the jackit-devel list. Maybe someone there knows what this problem is. "Ivica Bukvic" <ico@xxxxxxxx> writes: > /dev/shm exists right after install, but there is no entry in the > /etc/fstab. > > The funny thing about the /dev/shm dir is that you cannot remove or > modify even as root. It's default creation date is Dec.31 1969 until it > gets mounted, at which point it converts itself to the appropriate date. > > I had to manually add the below included line to fstab: > > none /dev/shm tmpfs defaults 0 0 > > and had to mount it manually in order for the jack's ./configure to > report that it has successfully found POSIX memory sharing. Yet, the > error persists when the newly compiled jackd is started: > > key for /tmp/jack/shm/jack-shm-registry is 0x6a0bdb99 > cannot create shm segment /jack-shm-registry (No such file or directory) > cannot create engine > > Should I simply revert to the older version of Jack until this stuff is > sorted out? > > BTW, configure does revert to the other style of shared memory stuff > (System V shm) if it does not find POSIX one, but even if I compile that > one, I still end up with the same error/results. > > Thanks for your help! > > Ico > > > > -----Original Message----- > > From: linux-audio-user-admin@xxxxxxxxxxxxxxxxxx > [mailto:linux-audio-user- > > admin@xxxxxxxxxxxxxxxxxx] On Behalf Of Jack O'Quin > > Sent: Friday, April 18, 2003 3:42 PM > > To: linux-audio-user@xxxxxxxxxxxxxxxxxx > > Subject: Re: [linux-audio-user] jackd fails to start: cannot create > shm > > segment /jack-shm-registry (No such file or directory) > > > > "Ivica Bukvic" <ico@xxxxxxxx> writes: > > > > > Hmm., I guess I was rejoicing prematurely... > > > > > > I added /dev/shm into fstab: > > > > > > none /dev/shm tmpfs defaults 0 0 > > > > > > recompiled CVS jack (configure finds shm stuff ok) > > > > > > started jack and the same thingy happens: > > > > > > jackd -d alsa -d hw:0 > > > jackd 0.68.0 > > > Copyright 2001-2003 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 > > > > > > key for /tmp/jack/shm/jack-shm-registry is 0x6a0bdb99 > > > cannot create shm segment /jack-shm-registry (No such file or > directory) > > > cannot create engine > > > > > > I guess I am back to square one. > > > > > > In addition, I forgot to mention one important issue with my other > > > machine (where Jack works), and that is that it was updated from > mdk9.0, > > > while this one was a clean install. After two clean installs on two > > > different machines, I noticed that neither had the shm entry in > fstab, > > > which obviously nullifies the possibility that it was a faulty > install > > > in the first place. > > > > Apparently, the POSIX shared memory implementation is not a standard > > part of most Linux distributions. That's a shame. > > > > > Again, any help is greatly appreciated! Sincerely, > > > > Does the directory /dev/shm exist? If not, "mkdir /dev/shm" (as > root). > > Then mount /dev/shm, and try starting jackd again. > > > > What does "grep shm /etc/fstab" say? > > > > Sorry this is such a hassle. -- Jack O'Quin Austin, Texas, USA