SIGUSR1 is used by X to signal kdm/xdm when it is ready to accept incoming connections. This worked in 0.0.17 when X was run by exec, but since it is now run by fork, kdm/xdm does not receive the SIGUUSR1 anymore.
Sorry, I do not understand the issue. Is this related to Xspice?
I'm closing this due inactivity: NEEDINFO since 2014-11-02
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