01c1b5dec2
Using the wrong X11 connection breaks the libev event handling model:
xcb_flush() must be called immediately before handing control to libev.
Before this fix:
1. xcb_prepare_cb would read and flush conn
2. restore_xcb_prepare_cb would read and flush restore_conn,
BUT also inadvertantly call xcb_flush(conn), resulting in new
events being filled into the XCB event queue
3. libev waits for new events
4. after 1 minute, libev times out and the events are processed
Diagnosed using strace on testcases/complete-run.pl.
related to commit 0d8b6714e3
related to #3510
i3: A tiling window manager
i3 is a tiling window manager for X11.
For more information about i3, please see the project's website and online documentation.
For information about contributing to i3, please see CONTRIBUTING.md.