[LAU] Allocating and setting up memory lock and real time group add terminal errors

[trahern culver]

hey all firstly when i go to add my self to the real time group with these commands  



groupadd realtime
usermod -a -G realtime sound-warrior  

i get these errors from terminal 



sound-warrior at the-megga-machine:~$ 
sound-warrior at the-megga-machine:~$ groupadd realtime
groupadd: cannot lock /etc/group; try again later.
sound-warrior at the-megga-machine:~$ usermod -a -G realtime sound-warrior 
usermod: group 'realtime' does not exist
sound-warrior at the-megga-machine:~$ 
 

does any one know what these errors mean and how to solve the problem? 

secondly how do you set up and use memory allocation and memory locking for audio work? 

Your help with this problem and question would be most welcome. 


Kind regards trahern.
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