compiz team mailing list archive

[Sam Spilsbury <smspillaz@xxxxxxxxx>]

Since bug 1049214 was marked as a dupe of this one, I'll continue the
discussion here.

The problem I was describing was not merely the usage of XSync, but the
way in which we use the synchronous parts of the X11 protocol.

Especially with moving windows you have a call to sendConfigureNotify
(required for ICCCM compliance). To avoid any race conditions with the
server regarding override redirect windows, we basically take a server
grab and query the server for all state relevant to us.

We might be able to be a little more lax than that - I'm pretty sure
that applications don't need the window stacking information. If that's
the case then we don't have to take a server grab at all.

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https://bugs.launchpad.net/bugs/1027211

Title:
  [nvidia] Moving or resizing windows freezes and stutters on nvidia
  (especially if some other window is redrawing).

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