b27b5cd5f3
If we bail out initializing GBM glamor backend, the screen private for the GBM backend may remain, pointing at freed memory. To avoid that issue, make sure to clear up the screen's private for the GBM backend. Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1785 Signed-off-by: Michel Dänzer <michel@daenzer.net> Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1768>
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
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