SUMMARY KWin does not disable compositor even if there are windows with _NET_WM_BYPASS_COMPOSITOR set. STEPS TO REPRODUCE execute "xprop -f _NET_WM_BYPASS_COMPOSITOR 32c -set _NET_WM_BYPASS_COMPOSITOR 1" on an existing window, or use "mpv --x11-bypass-compositor=yes" OBSERVED RESULT KWin still has compositing enabled. EXPECTED RESULT KWin should disable compositing. SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.16.90 KDE Frameworks Version: 5.62.0 Qt Version: 5.13.1 ADDITIONAL INFORMATION Every time when trying to set _NET_WM_BYPASS_COMPOSITOR to 1 for a window, the following log appears: kwin_x11[<PID>]: QMetaMethod::invoke: Unable to handle unregistered datatype 'SuspendReason'
Git commit 3ba33e4b581f7d95effc481d47e553c392404e11 by David Edmundson. Committed on 26/09/2019 at 15:09. Pushed by davidedmundson into branch 'Plasma/5.17'. Use lambdas for queued invocation of composition suspending Summary: Qt's metaobject is rather sensitive with scope resolution. Foo::Bar and Bar don't always match to a Qt metaobject, even if they refer to the same thing to a compiler. Here we register X11Compositor::SuspendReason but Q_ARG uses SuspendReason and they don't match. This leads to a runtime failure where the method isn't invoked. Rather than fixing metaobject usage, port the whole thing to lambdas which does better compile time checking and is generally nicer to read. Test Plan: Ran xprop to block compositing. Compositing was blocked. Grepped source code for Q_ARG use Reviewers: #kwin, zzag Reviewed By: #kwin, zzag Subscribers: zzag, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D24244 M +9 -8 composite.cpp M +4 -2 composite.h M +4 -2 plugins/scenes/opengl/scene_opengl.cpp https://commits.kde.org/kwin/3ba33e4b581f7d95effc481d47e553c392404e11
*** Bug 412428 has been marked as a duplicate of this bug. ***