Created attachment 113260 [details] Call XResetScreenSaver with or without XGetScreenSaver $ gcc -lX11 reset.c $ xset s 5; ./a.out reset # does not working $ xset s 5; ./a.out get-reset # working Arch Linux libx11 1.6.2-2 Let me know if you need any information. Thanks.
Since XGetScreenSaver() needs a reply from the X server, it flushes the queue of requests to the X server. Since XResetScreenSaver() does not, it just puts its request in the queue and waits for someone else to flush the queue, such as the XGetScreenSaver() call on the next time through your loop. Try putting a XFlush() right after the XResetScreenSaver() call (before you sleep) and see if that changes it.
Thanks, I'll checkout.
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