Running a WebKit2/QML app on QNX shows this debug output: Creation of socket failed with errno: 241 This is from ProcessLauncherQt.cpp, where we currently have: #if defined(SOCK_SEQPACKET) && !defined(Q_OS_MACX) #define SOCKET_TYPE SOCK_SEQPACKET #else #define SOCKET_TYPE SOCK_DGRAM #endif Thus on QNX the SOCK_SEQPACKET socket type is passed to socketpair futher below. On QNX this is apparently not supported, as can be reproduced with this minimal test case: #include <sys/socket.h> #include <stdio.h> int main(int argc, char** argv) { int fds[2]; char c; if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, fds) == -1) { perror("socketpair"); return 1; } if (send(fds[0], "a", 1, 0) == -1) { perror("send"); return 1; } if (recv(fds[1], &c, 1, 0) == -1) { perror("recv"); return 1; } printf("%c\n", c); return 0; } The output on a Playbook (bbndk 2.0.1) is: socketpair: Protocol wrong type for socket Changing SOCK_SEQPACKET to SOCK_DGRAM in the example makes it work, i.e. the output will be "a". Thus I propose to use SOCK_DGRAM in ProcessLauncherQt.cpp as well, I'll publish a patch.