Came back after being away from the machine for an hour, X was locked up, and eating CPU time. strace of the X process: [ ... ] sigreturn() = ? (mask now [CHLD]) --- SIGVTALRM (Virtual timer expired) --- sigreturn() = ? (mask now [CHLD]) --- SIGVTALRM (Virtual timer expired) --- sigreturn() = ? (mask now [CHLD]) --- SIGVTALRM (Virtual timer expired) --- sigreturn() = ? (mask now [CHLD]) --- SIGVTALRM (Virtual timer expired) --- sigreturn() = ? (mask now [CHLD]) --- SIGVTALRM (Virtual timer expired) --- sigreturn() = ? (mask now [CHLD]) --- SIGVTALRM (Virtual timer expired) --- [ ... ] ... ad infinitum. Had to kill -9 it.
Was any screensaver running (if so , which one?)
Yes, it most probably was -- the machine was left alone for an extended period of time. I couldn't tell which particular screensaver was running.
*** This bug has been marked as a duplicate of 13054 ***