The untrusted X11 authorization used by default only lasts 20 minutes (2 minutes in 3.8). Afterward 20 minutes of X11 inactivity, one gets the cryptic: Xlib: connection to "localhost:11.0" refused by server Xlib: Invalid MIT-MAGIC-COOKIE-1 key Error: Can't open display: localhost:11.0 Preferrably this should fixed, perhaps by generating a new key. At the very least, this behavior should be documented somewhere.
Created attachment 808 [details] Document timeout for untrusted X11 connections Good point. Here's a patch.
manpage fix applied. Thanks.
Change all RESOLVED bug to CLOSED with the exception of the ones fixed post-4.4.