#69 Tuner doesn't start: mlockall failed: failed to lock memory: Cannot allocate memory

[Anonymous]

Getting this on startup, everthing works afterwards but tuner (and I really miss the tuner...)

[16:38:25]  system init  ***  mlockall failed:
[16:38:25]  system init  ***  failed to lock memory: Cannot allocate memory
[16:38:25]  Jack init  ***  The jack sample rate is 96000/sec
[16:38:25]  Jack init  ***  The jack buffer size is 512/frames ... 
[16:38:25]  PitchTracker  ***  error creating realtime thread - tuner not started

[brummer]

To use the tuner you need to run jackd with realtime privileges. If you run a debian based system you could run
sudo dpkg-reconfigure jackd or sudo dpkg-reconfigure jackd2
depending on your used jack version, and select 'yes' to enable realtime privileges.

[Anonymous]

Hi,
I am running jack in real time, see the attached screenshot...

[brummer]

The message usually indicate that you ain't use realtime and ain't has the right to use mlock. Could you run guitarix and post the output of the command:
ps -eLo pid,rtprio,cmd | grep guitarix

[Anonymous]

OK apparently to be able to use realtime Arch people now need to add themselves to realtime group. Now I get no more errors on startup - but still tuner doesn't work... But after deleting my ~/.config/guitarix (stupid me deleted instead of backing up my configs...) and figuring out tuner doesn't work but I also hear nothing I realized that tuner didn't work because the volume was too low (the set of plugins I used was amplifying it too much so I could hear it)...
Anyway thanks for help I'm back on track now!