Public bug reported: (I submitted an Apport on this - but I don't know how to tie the two together, or where the Apport report went.)
When using Eclipse with VNC and VNC server running with a high resolution -geometry (e.g I used 3840x2000) I have regular X server crashes with Eclipse when Eclipse is fullscreen (SIGSEGV in Dispatch()). I tracked down the problem to being an alloca call that was much bigger than the current stack size in ProcShmGetImage in Xvnc/programs/Xserver/Xext/shm.c. In my case I was seeing the length variable requesting about 16MB. I suppose a fix is to change that particular ALLOCATE_LOCAL to a normal malloc (Xmalloc??) or to disable alloca use globally. My workaround was to change the stack size to something much bigger (ulimit -s 50000) ** Affects: tightvnc (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1910948 Title: SIGSEGV on large displays To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tightvnc/+bug/1910948/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs