I'm running a tandem of Xvfb + x11vnc on a headless box. x11vnc runs as _x11 user.
This stack works pretty well for me until one of the processes restarts. When Xvfb restarts, it no longer enabled SHM extension. # Xvfb MIT-SHM extension disabled due to lack of kernel support When I check ipcs, I see a lot of shm segments: # ipcs | grep _x11 | grep wc -l 137 Both processes are dead at this stage, so I'm not sure why those shm segments are not collected? When I manually remove them using ipcrm -m <shmid>, I can restart Xvfb and it will happily enable SHM extension. x11vnc will also work as well. Is that an expected behaviour? How can I ensure shm segments are purged when processes are no longer running? Cheers, Chris
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