Version: (using KDE 4.2.0) OS: Linux Installed from: Debian testing/unstable Packages (please look at the little screenshot) I have an ATI card, using fglrx 8.12.4 (latest driver from Debian sid). I noticed the bug since my update to final KDE 4.2. Before, I was using Debian sid with KDE 4.2 beta packages. I have activated desktop effects since KDE 4.1 and never see somethink like that. When the mouse cursor cover the pull-down menu, the transparency effect disappear.
Created attachment 30869 [details] screenshot of transparent menu
Hi and thanks It's a known issue and one that will be solved in 4.3 or later when a new api is available from kwin.
It isn't the menu which is transparent, but KWin rendering the window shadows over the menu. There may be duplicate bug reports for kwin, adding KWin developers to CC.
i recently sent a patch to the kwin mailing list that (should, does for me) fixes (traditional) shadows on the ARGB deco confusion. oxygen doesn't look broken as well. maybe someone wants to test? http://lists.kde.org/?l=kwin&m=124465888026022&w=2
*** This bug has been marked as a duplicate of bug 164084 ***