Bug 18133 - Protocol visible side-effect on XCompositeRedirectWindow() and following XCompositeUnredirectWindow()
Summary: Protocol visible side-effect on XCompositeRedirectWindow() and following XCom...
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/General (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
URL: https://bugs.launchpad.net/ubuntu/+so...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-10-20 11:15 UTC by Michael Vogt
Modified: 2008-11-25 14:20 UTC (History)
0 users

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i915 platform:
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Attachments
Proposed fix (351 bytes, patch)
2008-10-20 11:15 UTC, Michael Vogt 		no flags Details | Splinter Review
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Description Michael Vogt 2008-10-20 11:15:53 UTC 
Created attachment 19765 [details] [review]
Proposed fix

The attached patch prevents a protocol visible side-effect (XVisibilityEvent) on XCompositeRedirectWindow() followed by a XCompositeUnredirectWindow(). 

This problem shows up in gnome-screensaver with compiz and "unredirect fullscreen windows" enable (ubuntu bug #278112). A VisibilityNotify event is generated (first with obscured and than with unobscured) when the window swithces from redirected to unredirected. 

This is similar in spirit to http://cgit.freedesktop.org/xorg/xserver/commit/?id=a6a7fadbb03ee99312dfb15ac478ab3c414c1c0b that fixes a break of the keyboard lock.
Comment 1 Timo Aaltonen 2008-11-25 14:20:54 UTC 
fixed as commit c8472a74441838e16d0d3414db1fa7fe996868a9!

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