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Bug#526257: marked as done (libqtgui4: major gfx mem corruption)

Your message dated Sun, 05 Dec 2010 22:41:35 +0100
with message-id <0MJYNz-1PNzQb0Vpr-002W9U@mrelayeu.kundenserver.de>
and subject line 
has caused the Debian Bug report #526257,
regarding libqtgui4: major gfx mem corruption
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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526257: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=526257
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
Package: libqtgui4
Version: 4.5.1-1
Severity: important

I have noticed display corruption with many KDE applications; including kontact and konqueror.  This 
corruption is shared with the virtualbox-ose-qt GUI, so I believe either QT or X is the common factor, 
not KDE.

Although I run mostly KDE applications, I also run iceweasel and have (so far) not noticed any 
corruption with that application.  Therefore I believe the problem lies within QT (and outwith X), 
although I wouldn't say this is conclusive.  I've also noticed the problem on three different machines, 
each with different graphics hardware; suggesting this isn't directly a hardware-related problem.

The display corruption does not appear straight away.  It appears to be triggered by something within 
the application.  I haven't been able to figure out precisely what triggers the problem, but it does 
not appear to be directly related to user input (mouse movement, keyboard, etc) but rather the 
application (attempting to) update its display in some way.

The display corruption is manifest as a rectangular region within a window with semi-random content.  
The corruption sometimes shows content from other or previous windows, albeit distorted or misaligned: 
successive horizontal lines appear shifted.  The affected region is usually located at the top-left 
corner of the window (including the menus), but does not include the window decoration.

Hiding the corrupted region (with another window) and revealing it again does not affect the corruption 
but triggering the application (or QT) to refresh the display cleans the redrawn area; for example, a 
mouse-hover over a toolbar or menu item will clear the corrupt as the application/QT will draw a 
highlighted version of the icon or menu item.

Minimising and maximising the window will clear some corruption in the menu and toolbars, but not 
elsewhere.  This behaviour (min-then-max clearing corruption) appears to be application specific, so I 
suspect it is another example of the application redrawing some content, causing that part of the 
corruption to go away.

-- System Information:
Debian Release: squeeze/sid
  APT prefers oldstable
  APT policy: (500, 'oldstable'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.29-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libqtgui4 depends on:
ii  fontconfig             2.6.0-3           generic font configuration library
ii  libaudio2              1.9.1-5           Network Audio System - shared libr
ii  libc6                  2.9-8             GNU C Library: Shared libraries
ii  libfontconfig1         2.6.0-3           generic font configuration library
ii  libfreetype6           2.3.9-4.1         FreeType 2 font engine, shared lib
ii  libgcc1                1:4.3.3-8         GCC support library
ii  libglib2.0-0           2.20.1-1          The GLib library of C routines
ii  libice6                2:1.0.5-1         X11 Inter-Client Exchange library
ii  libjpeg62              6b-14             The Independent JPEG Group's JPEG 
ii  libmng1                1.0.9-1           Multiple-image Network Graphics li
ii  libpng12-0             1.2.35-1          PNG library - runtime
ii  libqtcore4             4.5.1-1           Qt 4 core module
ii  libsm6                 2:1.1.0-2         X11 Session Management library
ii  libstdc++6             4.3.3-8           The GNU Standard C++ Library v3
ii  libtiff4               3.8.2-11          Tag Image File Format (TIFF) libra
ii  libx11-6               2:1.2.1-1         X11 client-side library
ii  libxext6               2:1.0.4-1         X11 miscellaneous extension librar
ii  libxrender1            1:0.9.4-2         X Rendering Extension client libra
ii  zlib1g                 1: compression library - runtime

Versions of packages libqtgui4 recommends:
ii  qt4-qtconfig                  4.5.1-1    Qt 4 configuration tool

libqtgui4 suggests no packages.

-- no debconf information

--- End Message ---
--- Begin Message ---
Version: 4:4.6.3-4

No response from the submitter for 4 weeks, closing.

--- End Message ---

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