Bug#537801: libqtgui4: mangled color maps

[Zack Weinberg <zackw@panix.com>]

On Tue, Jul 21, 2009 at 10:51 AM, Modestas Vainius<modestas@vainius.eu> wrote:
>> kcachegrind does not show the problem with 4.5.1 Qt libraries.  I
>> would have liked to try the other Qt-based application I use
>> frequently, virtualbox-ose-qt, but it has been recompiled against
>> 4.5.2 so apt-get insisted on deleting it.
>
> This might be related to KDE since kcachegrind is also a KDE app.

I tried with qtconfig and could not reproduce the bug with any version
of the Qt libraries.  Then I failed to reproduce the bug with
kcachegrind either.  So then I reinstalled virtualbox-ose-qt and
discovered that it displays correctly ... *until* I start up my
virtual machine (which has Windows XP inside).  At that point the
window for the virtual machine itself shows the bug, but the
virtualbox control panel window does not.  But if I then quit out of
virtualbox, every window drawn by a Qt app (tried both kcachegrind and
qtconfig) started after that point shows the bug until I restart the X
server.  After that, everything is back to normal.

Unfortunately I can't try this version of virtualbox against the older Qt.

zw