Bug 484764

Summary:	KDE plasma DRI regression with vmwgfx
Product:	[Plasma] kwin	Reporter:	silverqx <silver.zachara>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	kde
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.27.11
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description silverqx 2024-03-30 16:06:24 UTC

Application: kwin_x11 (5.27.11)
 (Compiled from sources)
Qt Version: 5.15.12
Frameworks Version: 5.115.0
Operating System: Linux 6.8.2-gentoo x86_64
Windowing System: X11
Distribution: "Gentoo Linux"
DrKonqi: 5.27.11 [KCrashBackend]

-- Information about the crash:
Plasma stopped working with DRI enabled in vmware workstation, black screens or gray boxes, 10 sec lags before something is rendered and if rendered than it can render only half of the window, I never saw something like this last 5 years on Gentoo.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted

[KCrash Handler]
#4  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#5  0x00007fed02ec2f13 in __pthread_kill_internal (signo=6, threadid=<optimized out>) at pthread_kill.c:78
#6  0x00007fed02e71886 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#7  0x00007fed02e598b7 in __GI_abort () at abort.c:79
#8  0x00007fecfc93b02a in ?? () from /usr/lib64/dri/vmwgfx_dri.so
#9  0x00007fecfc93ee71 in ?? () from /usr/lib64/dri/vmwgfx_dri.so
#10 0x00007fecfc8f8d6d in ?? () from /usr/lib64/dri/vmwgfx_dri.so
#11 0x00007fecfc5158e0 in ?? () from /usr/lib64/dri/vmwgfx_dri.so
#12 0x00007fed0595748e in ?? () from /usr/lib64/libkwin.so.5
#13 0x00007fed040bab44 in ?? () from /usr/lib64/libQt5Core.so.5
#14 0x00007fed0591ffd8 in KWin::WorkspaceScene::prePaint(KWin::SceneDelegate*) () from /usr/lib64/libkwin.so.5
#15 0x00007fed05836263 in KWin::Compositor::prePaintPass(KWin::RenderLayer*) () from /usr/lib64/libkwin.so.5
#16 0x00007fed05839537 in KWin::Compositor::composite(KWin::RenderLoop*) () from /usr/lib64/libkwin.so.5
#17 0x00007fed0583b3fb in KWin::X11Compositor::composite(KWin::RenderLoop*) () from /usr/lib64/libkwin.so.5
#18 0x00007fed040bab44 in ?? () from /usr/lib64/libQt5Core.so.5
#19 0x00007fed057e79f6 in KWin::RenderLoop::frameRequested(KWin::RenderLoop*) () from /usr/lib64/libkwin.so.5
#20 0x00007fed05843787 in KWin::RenderLoopPrivate::dispatch() () from /usr/lib64/libkwin.so.5
#21 0x00007fed040bab44 in ?? () from /usr/lib64/libQt5Core.so.5
#22 0x00007fed040bf1be in QTimer::timeout(QTimer::QPrivateSignal) () from /usr/lib64/libQt5Core.so.5
#23 0x00007fed040b274b in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#24 0x00007fed037031f6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#25 0x00007fed04086798 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#26 0x00007fed040d9559 in QTimerInfoList::activateTimers() () from /usr/lib64/libQt5Core.so.5
#27 0x00007fed040d9e71 in ?? () from /usr/lib64/libQt5Core.so.5
#28 0x00007fed01b1d5c2 in ?? () from /usr/lib64/libglib-2.0.so.0
#29 0x00007fed01b20857 in ?? () from /usr/lib64/libglib-2.0.so.0
#30 0x00007fed01b20eb0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#31 0x00007fed040da21a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#32 0x00007fed040850db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#33 0x00007fed0408d671 in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#34 0x0000557db680f7d8 in ?? ()
#35 0x00007fed02e5b2e0 in __libc_start_call_main (main=main@entry=0x557db680f3f0, argc=argc@entry=1, argv=argv@entry=0x7fff0a9ad738) at ../sysdeps/nptl/libc_start_call_main.h:58
#36 0x00007fed02e5b399 in __libc_start_main_impl (main=0x557db680f3f0, argc=1, argv=0x7fff0a9ad738, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0a9ad728) at ../csu/libc-start.c:360
#37 0x0000557db6810d85 in ?? ()
[Inferior 1 (process 3234) detached]

Reported using DrKonqi

Comment 1 silverqx 2024-03-30 16:40:18 UTC

I'm going write some more info about the problem, the crash was posted using KDE crash handler but I don't know if it relates to the DRI problem, it happened to me a few minutes after I logged in.

The main problem is that DRI doesn't work, currently, I must have disabled 3D acceleration in vmware, then everything works normally. 

If I disable the composition in KDE settings, rendering starts working, but there are still problems.

Eg. if I write vblank_mode=0 glxgears and hit enter it waits 1-2 seconds until it executes, what is weird, this isn't happening with disabled 3D accel. I also tried to downgrade the libdrm and mesa (tried also to upgrade to unstable versions), but the behavior is the same. I was not able to solve this problem.

My gentoo was un-upgraded ~2-3 months and a few days ago I did an upgrade and after this upgrade, this problem started.

Comment 2 silverqx 2024-03-30 16:41:56 UTC

Also, I don't see anything weird in Xorg.0.conf or in the syslog messages, I'm on kernel 6.8.2.

Comment 3 David Edmundson 2024-05-02 13:54:46 UTC

This crash is happening deep inside the driver, please report there