https://bugs.kde.org/show_bug.cgi?id=504424
Bug ID: 504424
Summary: Program running in xwayland from docker result in
kwin_wayland_drm: The main thread was hanging
temporarily!
Classification: Plasma
Product: kwin
Version First 6.3.4
Reported In:
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: xwayland
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Running a xwayland program (in this situation it is the program is SmartGit)
inside a docker container, results in mini freeze of the ui. The log indicate
the main thread is hanging.
maj 17 17:30:35 xx kwin_wayland_wrapper[1242]: kwin_wayland_drm: The main
thread was hanging temporarily!
maj 17 17:30:35 xx kwin_wayland_wrapper[1242]: kwin_wayland_drm: The main
thread was hanging temporarily!
maj 17 17:30:39 xx kwin_wayland_wrapper[1242]: kwin_wayland_drm: The main
thread was hanging temporarily!
maj 17 17:30:39 xx kwin_wayland_wrapper[1242]: kwin_wayland_drm: The main
thread was hanging temporarily!
maj 17 17:30:55 x kwin_wayland_wrapper[1242]: kwin_wayland_drm: The main thread
was hanging temporarily!
maj 17 17:32:01 xx kwin_wayland_wrapper[1242]: kwin_wayland_drm: The main
thread was hanging temporarily!
Also notice the
kf.windowsystem: static bool KX11Extras::mapViewport() may only be used on X11
It might be related to a combination of amd gpu and also that the system is
connected to VPN using openconnect.
STEPS TO REPRODUCE
Create a docker container with SmartGit based on Ubuntu 24.04.
(apt install -y libswt-gtk-4-java dbus-x11 and install
https://downloads.syntevo.com/downloads/smartgit/smartgit-24_1_2.deb)
Start it up with something like:
docker container run -t -i --privileged \
--device /dev/net/tun:/dev/net/tun \
--device /dev/dri:/dev/dri \
-h smartgit \
-v /tmp/.X11-unix:/tmp/.X11-unix \
-v /run/dbus/system_bus_socket:/run/dbus/system_bus_socket:ro \
-e DISPLAY=$DISPLAY \
-e WAYLAND_DISPLAY=$WAYLAND_DISPLAY \
-e GTK_THEME=Adwaita \
When starting smartgit inside the container it starts minifreeze the system.
Notice it was also described hear
https://forums.docker.com/t/xwayland-applications-mini-freeze/139182/4
I would expect that the SmartGit application run smooth, like if I start it
outside docker directly on plasma.
SOFTWARE/OS VERSIONS
from kinfo:
Operating System: Gentoo Linux 2.17
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.3
Kernel Version: 6.14.6-gentoo-FrostEyes (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 5950X 16-Core Processor
Memory: 125.7 GiB of RAM
Graphics Processor: AMD Radeon RX 570 Series
Extra information:
I tried to gdb -p /usr/bin/kwin_wayland $(pidof kwin_wayland) over SSH, and
then break when it hangs. It result it the following stack - don't know if it
relevant.
#0 0x00007f5f641f96a5 in ??? () at /usr/lib64/libc.so.6
#1 0x00007f5f641fc0f2 in pthread_cond_wait () at /usr/lib64/libc.so.6
#2 0x00007f5f6485a71b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib64/libQt6Core.so.6
#3 0x00007f5f647c022f in QFutureInterfaceBase::waitForFinished() () at
/usr/lib64/libQt6Core.so.6
#4 0x00007f5f6707f7f2 in ??? () at /usr/lib64/libkwin.so.6
#5 0x00007f5f6707f82d in ??? () at /usr/lib64/libkwin.so.6
#6 0x00007f5f6491ac9d in QObjectPrivate::deleteChildren() () at
/usr/lib64/libQt6Core.so.6
#7 0x00007f5f6493fa39 in QObject::~QObject() () at /usr/lib64/libQt6Core.so.6
#8 0x00007f5f6707e938 in ??? () at /usr/lib64/libkwin.so.6
#9 0x00007f5f6491ac9d in QObjectPrivate::deleteChildren() () at
/usr/lib64/libQt6Core.so.6
#10 0x00007f5f6493fa39 in QObject::~QObject() () at /usr/lib64/libQt6Core.so.6
#11 0x00007f5f6734999d in KWin::X11Window::~X11Window() () at
/usr/lib64/libkwin.so.6
#12 0x00007f5f673270bc in KWin::X11Window::windowEvent(xcb_generic_event_t*) ()
at /usr/lib64/libkwin.so.6
#13 0x00007f5f67327c3f in KWin::Workspace::workspaceEvent(xcb_generic_event_t*)
() at /usr/lib64/libkwin.so.6
#14 0x00007f5f6497909f in
QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long
long*) () at /usr/lib64/libQt6Core.so.6
#15 0x0000563c1368dffa in ??? ()
#16 0x00007f5f6495ee66 in ??? () at /usr/lib64/libQt6Core.so.6
#17 0x00007f5f64a05441 in QSocketNotifier::activated(QSocketDescriptor,
QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () at
/usr/lib64/libQt6Core.so.6
#18 0x00007f5f64a05c05 in QSocketNotifier::event(QEvent*) () at
/usr/lib64/libQt6Core.so.6
#19 0x00007f5f65bbf9e5 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib64/libQt6Widgets.so.6
#20 0x00007f5f6497a4b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib64/libQt6Core.so.6
#21 0x00007f5f64885556 in
QEventDispatcherUNIXPrivate::activateSocketNotifiers() () at
/usr/lib64/libQt6Core.so.6
#22 0x00007f5f64885a54 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt6Core.so.6
#23 0x00007f5f652b25d1 in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /usr/lib64/libQt6Gui.so.6
#24 0x00007f5f649a1da2 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt6Core.so.6
#25 0x00007f5f649a1f38 in QCoreApplication::exec() () at
/usr/lib64/libQt6Core.so.6
#26 0x0000563c136738ec in ??? ()
#27 0x00007f5f641913ee in ??? () at /usr/lib64/libc.so.6
#28 0x00007f5f641914a9 in __libc_start_main () at /usr/lib64/libc.so.6
#29 0x0000563c13675465 in ??? ()
Please let me know how I can debug it further?
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