Created attachment 64461 [details] Black shadow around kicker Version: unspecified (using KDE 4.7.1) OS: Linux If I disable compositing at run-time, I get black borders around kicker menu, as well as around all panel/desktop widget popups. On the other hand, if I disable compositing at startup and restart KDE session, the borders are no longer painted black. Reproducible: Always Steps to Reproduce: Log in with a brand new KDE session (at least, with composite enabled). Then hit Alt+Shift+F12 to disable compositing, and open the K-Menu, or hover on any item in the taskbar that has a popup. Actual Results: It looks like in attached screenshots, black borders. Expected Results: The border should be redrawn appropriately. It does not depend on window manager – I switched to metacity and the effect was the same. Switching plasma theme does not seem to affect the problem – it is still there. This happens on two computers with the same KDE version (4.7.1) but different os versions and different hardware: Laptop, Kubuntu 11.04/Intel 945GM and desktop, Kubuntu 11.10 beta/Radeon9200 video card, R200 driver. Could it be related to bug 283414 ?
Still valid in kde 4.7.3
this is because KWindowSystem::compositingActive() is never getting updated; nor is its signal being emitted. this is a recent happening ...
*** Bug 283414 has been marked as a duplicate of this bug. ***
putting some debug output in KWindowSystem::x11Event, it doesn't seem damage events are being sent when compositing changes. perhaps the compositor atom isn't being set at all? also tested without the EffectsWatcher in Plasma::Theme, just in case, and it had no effect.
Still valid in kde 4.7.4
This is still in KDE 4.8.0.
Hmm, I didn't even know that this has ever worked. This bug is still present in 4.8.2.
even tough is the "opposite" is the same issue as this other bug: sometimes it doesn't nitice composite being enabled or disabled *** This bug has been marked as a duplicate of bug 261503 ***