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On 2011-05-04T05:43:35+00:00 Ugo Riboni wrote:
Created attachment 46321
Test program to help reproduce the bug
If the root window and all its subwindows are redirected to off-screen
storage by using XCompositeRedirectSubwindows with the update parameter
set to CompositeRedirectAutomatic, some windows fail to repaint
correctly in some conditions.
To reproduce this bug:
(1) ensure that windows are NOT currently redirected to off-screen storage
(2) run the attached test application, or run xcompmgr -a if you have it
installed.
(3) open any regular window, then open a menu window so that it overlaps with
it partially
(4) close the menu window and open it again in another position so that it will
not overlap with the regular window
(5) observe that the part of the regular window that was covered by the first
menu window is cleared and then it's not normally repainted anymore
I can reproduce reliably on a machine running Ubuntu Linux 11.04, which runs
X.org version 1.10.1, with Linux kernel 2.6.24-29-server x86_64
The window manager running is Metacity (with Metacity's own compositor
disabled).
The menu windows mentioned in steps 3 to 5 are those that appear when
right clicking on the desktop. I don't know what is special about them
in X11 terms, but there are no other windows that exhibit this behavior
that I could find.
I could reproduce this bug both on an Nvidia card and on a machine with
integrated Intel graphics.
Reply at: https://bugs.launchpad.net/unity-2d/+bug/775508/comments/4
On 2011-05-04T05:44:56+00:00 Ugo Riboni wrote:
Created attachment 46322
Screenshot of one of the windows showing the corrupt area
Reply at: https://bugs.launchpad.net/unity-2d/+bug/775508/comments/5
On 2011-05-04T06:19:34+00:00 Michel-daenzer wrote:
Sounds like bug 36699 / bug 22566 ...
(In reply to comment #2)
I could reproduce this bug both on an Nvidia card [...]
Using which driver?
Reply at: https://bugs.launchpad.net/unity-2d/+bug/775508/comments/6
On 2011-05-05T02:10:23+00:00 Alberto Milone wrote:
(In reply to comment #2)
Sounds like bug 36699 / bug 22566 ...
(In reply to comment #2)
I could reproduce this bug both on an Nvidia card [...]
Using which driver?
It can be reproduced with nvidia, fglrx and intel. I haven't tried to
reproduce it with radeon yet but, if it can help, I will.
Reply at: https://bugs.launchpad.net/unity-2d/+bug/775508/comments/9
On 2011-05-18T10:22:59+00:00 Alberto Milone wrote:
The issue seems to be caused only when override redirect windows (such
as GtkMenus) overlap a window, then the menu is destroyed and somehow
the area previously occupied by the menu is clipped (and the wallpaper
is visible) when a new menu (which doesn't overlap the same window) is
created. Moving the window makes the hole go away as miMoveWindow() does
a RegionCopy().
I guess something weird happens when the window is no longer marked as
overlapped. Maybe miMarkOverlappedWindows() doesn't play well with
override redirect windows in CompositeRedirectAutomatic mode.
Any ideas as to how I can further debug the issue?
Thanks
Reply at: https://bugs.launchpad.net/unity-2d/+bug/775508/comments/10
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https://bugs.launchpad.net/bugs/775508
Title:
Windows fail to repaint where popup windows appeared before
Status in Unity 2D:
Fix Released
Status in X.Org X server:
Confirmed
Status in “unity-2d” package in Ubuntu:
Fix Released
Status in “xorg-server” package in Ubuntu:
Triaged
Bug description:
To reproduce:
- Open a window
- Right click on the desktop to make a popup menu appear, and make it so that
the menu overlaps partially the window
- Left click on the desktop to make the menu disappear
- Right click again on the desktop but this time in a different position that
will not cause the menu to overlap the window
Result:
- The part of window that was originally covered by the first menu now
displays a hole in the shape of the menu (i.e. it shows the desktop
background instead of the window content).
Moving the window will cause it to repaint and fix the corrupted area.
This happens regardless of the capture_before_unmap option being enabled in
