when maximizing a window by either clicking the maximize button or moving it to the top of the screen, the contents will appear black and can only be shown again by minimizing and then restoring the window while maximized or by resizing. Reproducible: Always kubuntu 12.10 x64
nvidia? *** This bug has been marked as a duplicate of bug 324823 ***
No, that's a different one. That one says that it happens when size is increased but NOT maximized. This one is only when it is maximized.
and the claim changed and doesn't match the posted window properties... a) is it an nvidia system? b) attach the output of "qdbus org.kde.kwin /KWin supportInformation"
I never changed my claim, I said it was for maximized windows all along. a) yes, $ qdbus org.kde.kwin /KWin supportInformation qdbus: could not find a Qt installation of ''
(In reply to comment #4) > I never changed my claim Not "you" - see bug #324823 comment #6 > a) yes we'll consider it a dupe unless better knowledge then. try toggling the maximize effect in "kcmshell4 kwincompositing" - if that impacts it, it's a dupe for sure. > qdbus: could not find a Qt installation of '' *sigh* - *ubuntu? Install qtchooser or (globally) "export QT_SELECT=4" export QT_SELECT=4 qdbus org.kde.kwin /KWin supportInformation *** This bug has been marked as a duplicate of bug 324823 ***
qtchooser was already installed and I get the same output, even with the export. "*sigh* - *ubuntu?" What do you have against ubuntu? And if not ubuntu, then what do you use/recommend?
check whether "qdbus" is installed (apparently it's now also in an extra package) - otherwise you'll have to hunt it on your disk (somewhere in /var or /usr/lib/qt4 maybe) i will not judge or advertise in this context, but for a distro esp. addressing noobs, ubuntu should review their package management (broken fglrx/nvidia installations in multiple regards; trunking files on updates, causing random defaults; ...; and this issue is quite specific to them as well)