sticky Re: Trouble launching WSJTX on Mac 64bit os 10.12.6 #macOS

Andy McMullin

Hi Michael,

Did you follow the instruction in the read me file about copying sysctl.conf to your system? It sets up the shared memory segments. Without it you cannot create them.

You can check that it worked OK by opening a terminal and typing:

sysctl -a | grep sysv.shm

and seeing shmmax is 14680064

I hope this helps

Andy, G8TQH

On 9 Sep 2020, at 01:55, Michael Rieger via <> wrote:

Hello everyone. I just joined this group today and have a question that hopefully can be answered. Please forgive me if this has already been covered; I tried to find documentation on this issue without any success. The download and install of the program went just fine. However when I try to launch the program I get 2 error messages about shared memory. I have attached screenshots below. Does anyone know why this is happening and a possible remedy for it?


Michael Rieger
KJ7BRM<Screen Shot 2020-09-08 at 5.34.51 PM.png><Screen Shot 2020-09-08 at 5.34.57 PM.png>

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