Created attachment 119292 [details] Animation (gif file) SUMMARY When I drag windows to top, right or left edges of the screen, these windows hangs/freezes (5-10s) then they are maximized or tiled. STEPS TO REPRODUCE 1. Open any application (like Firefox, KSysGuard...) 2. Drag any window to top, left or right edges of the screen 3. Window hangs/freezes (5-10s) then maximized or tiled. OBSERVED RESULT Window hangs/freezes (5-10s) then maximized or tiled. EXPECTED RESULT Drag any window to top, left or right edges of the screen without experiencing hangs/freezes. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE neon 5.15 User Edition KDE Plasma Version: 5.15.4 KDE Frameworks Version: 5.56.0 Qt Version: 5.12.0 Kernel Version: 4.15.0-47-generic Graphics: Card-1: Intel Skylake GT2 [HD Graphics 520] Card-2: NVIDIA GM108M [GeForce 930M] Display Server: x11 (X.Org 1.19.6 ) drivers: modesetting,nvidia (unloaded: fbdev,vesa,nouveau) Resolution: 1366x768@60.32hz OpenGL: renderer: GeForce 930M/PCIe/SSE2 version: 4.6.0 NVIDIA 390.116 ADDITIONAL INFORMATION I also experienced window hangs/freezes before (just randomly) but now is serious, it happened every time I drag window to edges of screen.
Happening for me also. Similar specs. Running manjaro linux. Kde 5.15.4
it seems related to bug 406307
It also happens on my machine running KDE neon on a NVIDIA GTX 1050 Ti Max-Q. Changing to the Intel GPU using prime-select fixes the issue. So it is related to NVDIA.
*** Bug 406307 has been marked as a duplicate of this bug. ***
Update: The issue seems to be related with the screen configuration. On my laptop, a second screen is connected. When I unplug the screen, the freeze doesn't occur anymore. After reconnecting the screen cable, the freezes happen again. Disabling the screen in the system settings also helped. Here, even if I re-enable the screen, the issue does not happen again.
Update: - On my laptop (OpenGL renderer: NVIDIA), I cliked on System Settings > Display and Monitor > Compositor, change Rendering backend to "XRender", Log out and Log in again, the hang/freeze doesn't occur anymore. - Then, I tried changing Rendering backend to OpenGL 2.0 or OpenGL 3.1, then Log out and Log in, the hang/freeze happened again. Is it related to "Compositor Settings for Desktop Effects", "OpenGL" and "NVIDIA"?
I found I was able to cause this hang reliably, and that it could be fixed by setting the compositor to xrender, both OpenGL 2.0 and 3.1 have this bug. The trigger I had was alt-tabbing, and it seems to only trigger for some programs. It was very reliably triggered when alt-tabbing into and out of Terminator, and seems 100% reliable going from Chrome into Terminator. (Thought: could this be GTK related?) Potentially relevant settings?: compositor - animation speed one step above instant compositor - full screen repaints compositor - keep window thumbnails only for shown windows task switcher - "show selected window" is ticked task switcher - visualization is "Compact" software: KDE Neon, up to date. hardware (separate systems, same physical hard dive): Dell 5491 laptop, nvidia mx130 - Maxwell - very similar to original report. Thinkpad w530 laptop, nvidia k1000m - Kepler - architectural generation behind original report. I've tested these drivers from the third party drivers PPA for nvidia (ppa:graphics-drivers/ppa): 390 (available without ppa): exhibits bug 418: exhibits bug (This is my first post, please let me know if I need to include anything/read through some guidelines...)
Any updates on this bug's status? I suffer from this bug too and I originally opened Bug 406307 with similar report (which was marked as duplicate, though posted earlier). Setting Compositor Rendering backend to "Xrender" as others suggested doesn't fully fix the issue on my end. It just makes freezes occur somewhat less. I would say with "OpenGL" window dragging animations exhibit freezes 90% of the times (was far less frequent before the 5.15.4 update), and with "Xrender" it's only 10-15%, which is of course a lot better, but the bug is still there. Graphics: Card-1: Intel HD Graphics 530 bus-ID: 00:02.0 Card-2: NVIDIA GM107M [GeForce GTX 950M] bus-ID: 01:00.0 Display Server: X.Org 1.20.1 drivers: nvidia FAILED: modesetting Resolution: 1360x768@59.96hz, 1920x1080@60.00hz OpenGL: renderer: GeForce GTX 950M/PCIe/SSE2 version: 4.6.0 NVIDIA 390.116 Direct Render: Yes
Both the outline and tabbox are qml based so I guess this is a dup of 406180. Is there any chance you could get a backtrace when kwin is frozen? (you would need two computers for this)
I followed this guide https://community.kde.org/KWin/Debugging, here is stacktrace: [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560b85a9b7c4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 88 ../sysdeps/unix/sysv/linux/futex-internal.h: No such file or directory. (gdb) bt #0 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560b85a9b7c4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007fb85f6859f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x560b85a9b770, cond=0x560b85a9b798) at pthread_cond_wait.c:502 #2 0x00007fb85f6859f3 in __pthread_cond_wait (cond=0x560b85a9b798, mutex=0x560b85a9b770) at pthread_cond_wait.c:655 #3 0x00007fb863a29b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007fb863a29e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007fb85e81411d in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #6 0x00007fb85e816685 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #7 0x00007fb85e816d09 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007fb8641ceac5 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #9 0x00007fb85e875285 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #10 0x00007fb8649f183c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #11 0x00007fb8649f8dd0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #12 0x00007fb863bfb328 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #13 0x00007fb8641c44ca in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #14 0x00007fb8641c471d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #15 0x00007fb86419d14b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #16 0x00007fb84ed326a3 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #17 0x00007fb863bf964a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007fb863c02800 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #19 0x00007fb8669d2dbb in kdemain(int, char**) (argc=<optimized out>, argv=0x7fff0b9498e8) at ./main_x11.cpp:469 #20 0x00007fb8665fab97 in __libc_start_main (main= 0x560b83e89720 <main>, argc=1, argv=0x7fff0b9498e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0b9498d8) at ../csu/libc-start.c:310 #21 0x0000560b83e8975a in _start () (gdb) info thread Id Target Id Frame * 1 Thread 0x7fb866d8a880 (LWP 1800) "kwin_x11" 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560b85a9b7c4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 2 Thread 0x7fb84e01f700 (LWP 1832) "QXcbEventQueue" 0x00007fb8666edbf9 in __GI___poll (fds=0x7fb84e01ec38, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 3 Thread 0x7fb847fff700 (LWP 1858) "QDBusConnection" 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb8400124a8, nfds=4, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 4 Thread 0x7fb845287700 (LWP 1917) "QQmlThread" 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb83c000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 5 Thread 0x7fb82ffff700 (LWP 1921) "kwin_x11" 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb862c39fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 6 Thread 0x7fb837ddb700 (LWP 2110) "QSGRenderThread" 0x00007fb8666edbf9 in __GI___poll (fds=0x7fb837dda6b0, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29 7 Thread 0x7fb834901700 (LWP 4135) "QQmlThread" 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb828001af8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 8 Thread 0x7fb845ee7700 (LWP 4136) "QSGRenderThread" 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560b85dfb6b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 (gdb) thread 2 [Switching to thread 2 (Thread 0x7fb84e01f700 (LWP 1832))] #0 0x00007fb8666edbf9 in __GI___poll (fds=0x7fb84e01ec38, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 29 ../sysdeps/unix/sysv/linux/poll.c: No such file or directory. (gdb) bt #0 0x00007fb8666edbf9 in __GI___poll (fds=0x7fb84e01ec38, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007fb86375e747 in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007fb86376036a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007fb84ed3132a in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007fb863a22bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007fb85f67f6db in start_thread (arg=0x7fb84e01f700) at pthread_create.c:463 #6 0x00007fb8666fa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) thread 3 [Switching to thread 3 (Thread 0x7fb847fff700 (LWP 1858))] #0 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb8400124a8, nfds=4, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 39 ../sysdeps/unix/sysv/linux/ppoll.c: No such file or directory. (gdb) bt #0 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb8400124a8, nfds=4, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 #1 0x00007fb863c53e41 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007fb863c5554e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #3 0x00007fb863bf964a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007fb863a2141a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007fb85cf1b015 in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 #6 0x00007fb863a22bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007fb85f67f6db in start_thread (arg=0x7fb847fff700) at pthread_create.c:463 #8 0x00007fb8666fa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) thread 4 [Switching to thread 4 (Thread 0x7fb845287700 (LWP 1917))] #0 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb83c000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 39 in ../sysdeps/unix/sysv/linux/ppoll.c (gdb) bt #0 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb83c000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 #1 0x00007fb863c53e41 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007fb863c5554e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #3 0x00007fb863bf964a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007fb863a2141a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007fb85e0a02e5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #6 0x00007fb863a22bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007fb85f67f6db in start_thread (arg=0x7fb845287700) at pthread_create.c:463 #8 0x00007fb8666fa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) thread 5 [Switching to thread 5 (Thread 0x7fb82ffff700 (LWP 1921))] #0 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb862c39fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 88 ../sysdeps/unix/sysv/linux/futex-internal.h: No such file or directory. (gdb) bt #0 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb862c39fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007fb85f6859f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb862c39f68, cond=0x7fb862c39f90) at pthread_cond_wait.c:502 #2 0x00007fb85f6859f3 in __pthread_cond_wait (cond=0x7fb862c39f90, mutex=0x7fb862c39f68) at pthread_cond_wait.c:655 #3 0x00007fb862943844 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #4 0x00007fb862943889 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #5 0x00007fb85f67f6db in start_thread (arg=0x7fb82ffff700) at pthread_create.c:463 #6 0x00007fb8666fa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) thread 6 [Switching to thread 6 (Thread 0x7fb837ddb700 (LWP 2110))] #0 0x00007fb8666edbf9 in __GI___poll (fds=0x7fb837dda6b0, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29 29 ../sysdeps/unix/sysv/linux/poll.c: No such file or directory. (gdb) bt #0 0x00007fb8666edbf9 in __GI___poll (fds=0x7fb837dda6b0, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007fb837141315 in () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0 #2 0x00007fb8361855b8 in () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116 #3 0x00007fb836185d29 in () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116 #4 0x00007fb837137e72 in () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0 #5 0x00007fb8373d3ba2 in () at /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so #6 0x00007fb86420220f in QOpenGLContext::swapBuffers(QSurface*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #7 0x00007fb85e813589 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007fb85e817198 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #9 0x00007fb863a22bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #10 0x00007fb85f67f6db in start_thread (arg=0x7fb837ddb700) at pthread_create.c:463 #11 0x00007fb8666fa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) thread 7 [Switching to thread 7 (Thread 0x7fb834901700 (LWP 4135))] #0 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb828001af8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 39 ../sysdeps/unix/sysv/linux/ppoll.c: No such file or directory. (gdb) bt #0 0x00007fb8666edcf6 in __GI_ppoll (fds=0x7fb828001af8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 #1 0x00007fb863c53e41 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007fb863c5554e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #3 0x00007fb863bf964a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007fb863a2141a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007fb85e0a02e5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #6 0x00007fb863a22bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007fb85f67f6db in start_thread (arg=0x7fb834901700) at pthread_create.c:463 #8 0x00007fb8666fa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) thread 8 [Switching to thread 8 (Thread 0x7fb845ee7700 (LWP 4136))] #0 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560b85dfb6b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 88 ../sysdeps/unix/sysv/linux/futex-internal.h: No such file or directory. (gdb) bt #0 0x00007fb85f6859f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560b85dfb6b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007fb85f6859f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x560b85dfb660, cond=0x560b85dfb688) at pthread_cond_wait.c:502 #2 0x00007fb85f6859f3 in __pthread_cond_wait (cond=0x560b85dfb688, mutex=0x560b85dfb660) at pthread_cond_wait.c:655 #3 0x00007fb863a29b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007fb863a29e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007fb85e816da8 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #6 0x00007fb85e8171da in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #7 0x00007fb863a22bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007fb85f67f6db in start_thread (arg=0x7fb845ee7700) at pthread_create.c:463 #9 0x00007fb8666fa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
*** This bug has been marked as a duplicate of bug 406180 ***