https://bugs.kde.org/show_bug.cgi?id=456499
Bug ID: 456499
Summary: KWin Magic Lamp effect causing black screen (X11 +
Wayland)
Product: kwin
Version: 5.25.2
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-various
Assignee: kwin-bugs-n...@kde.org
Reporter: polarathene-sig...@hotmail.com
Target Milestone: ---
Using the Magic Lamp effect with windows of a certain area size causes the
display to be flooded with a black fill.
Recovery on Wayland may not be possible.
On X11 it is possible to recovery by disabling the compositor with
alt+shift+f12 in the guest. This would repaint the screen.
---
### Additional Details
Without recovering by toggling the compositor, the desktop remains interactive.
I was able to click the bottom-left of the display where the application
launcher button should be, and a white rectangle is drawn at the expected size
of the applet. In some cases other colours bleed through, but the screen is
mostly painted black.
The window may need to be large. I was able to consistently reproduce with
Konsole at "width x height" values of 1673x395, 1670x432, 912x822, 595x1230 or
larger. Slightly smaller height or width dimension than those example
dimensions worked correctly. At 1360x768 guest resolution, a maximized
system-settings window would reproduce the bug too.
These sizes were consistent at reproducing regardless of the set display
resolution (1080p and 1360x768 tested, as well as maximized VM guest display on
host 1440p monitor).
I tried with all other effects disabled, no change in behaviour. The problem
does not occur when the Magic Lamp effect is disabled. Adjusting the animation
duration from Default, did not seem to make a difference. Nor does it seem to
matter what toolkit is used for the window (GTK or Qt).
At one point, when using the effect on windows that did not trigger the issue,
the effect was degraded to what looked like maybe 6 sided geometry? The smooth
curved distortion of the effect was replaced with a single point bend, but I am
not sure how to reproduce that.
---
This was reproduced on Fedora 36, EndeavourOS, and openSUSE Tumbleweed.
All were tested as fresh VMware VM guest installs with 3D accel (driver
SVGA3D/vmwgfx) enabled.
Thus it may be a bug specifically affecting VMware hypervisor support, I have
not yet updated to reproduce on my host system (Manjaro with Nvidia proprietary
drivers). VMware has since the Workstation 16 series handled 3D accel guests
running on linux hosts via Vulkan host driver which may affect reproduction.
---
STEPS TO REPRODUCE
1. Enable the Magic Lamp effect.
2. Minimize (or the opposite restoring the minimized window) a window with a
large enough area size (eg maximized window).
3. Screen should be filled with black.
4. If not, one of the distros may need to be used with the free VMware
Workstation 16 Player hypervisor to reproduce in a VM with 3D accel enabled.
OBSERVED RESULT
Black screen, unable to recover in a Wayland session.
EXPECTED RESULT
For the effect to work consistently and without the black fill.
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20220706
KDE Plasma Version: 5.25.2
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5
Kernel Version: 5.18.9
Graphics Platform: X11
Graphics Processor: SVGA3D
Extra: xorg: 21.1.3, xwayland 22.1.2, mesa 22.1.2, vmwgfx 2.20.0
Operating System: EndeavourOS
KDE Plasma Version: 5.25.2
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5
Kernel Version: 5.18.9
Graphics Platform: X11
Graphics Processor: SVGA3D
Extra: xorg: 21.1.3, xwayland 22.1.2, mesa 22.1.2, vmwgfx 2.20.0
Operating System: Fedora 36
KDE Plasma Version: 5.25.2
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.3
Kernel Version: 5.18.9
Graphics Platform: X11
Graphics Processor: SVGA3D
Extra: xorg: 1.20.14, xwayland 22.1.2, mesa 22.1.2, vmwgfx 2.20.0
---
When recovering by toggling the kwin compositor via alt+shift+f12, `journalctl
-b0` outputs the following (openSUSE TW):
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: OpenGL vendor string:
VMware, Inc.
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: OpenGL renderer string:
SVGA3D; build: RELEASE; LLVM;
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: OpenGL version string:
4.1 (Compatibility Profile) Mesa 22.1.3
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: OpenGL shading language
version string: 4.10
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: Driver:
VMware (SVGA3D)
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: GPU class:
Unknown
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: OpenGL version:
4.1
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: GLSL version:
4.10
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: Mesa version:
22.1.3
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: X server version:
1.21.1
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: Linux kernel version:
5.18.9
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: Requires strict binding:
yes
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: GLSL shaders:
yes
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: Texture NPOT support:
yes
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: Virtual Machine:
yes
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]:
QObject::connect(KWin::InputMethod, KWin::EffectsHandlerImpl): invalid nullptr
parameter
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: ZoomConfig::instance
called after the first use - ignoring
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: SlideConfig::instance
called after the first use - ignoring
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: MagicLampConfig::instance
called after the first use - ignoring
Jul 09 18:00:02 localhost.localdomain kwin_x11[1519]: KscreenConfig::instance
called after the first use - ignoring
Jul 09 18:00:02 localhost.localdomain xdg-desktop-portal-kde[1877]:
xdp-kde-settings: Read called with parameters:
Jul 09 18:00:02 localhost.localdomain xdg-desktop-portal-kde[1877]:
xdp-kde-settings: group: "org.freedesktop.appearance"
Jul 09 18:00:02 localhost.localdomain xdg-desktop-portal-kde[1877]:
xdp-kde-settings: key: "color-scheme"
Fedora output similar logs, notable with the QXcbConnection lines. these are
related to toggling the compositor off, and then back on (timestamp groups). No
specific logs appear here or in `dmesg` output when the actual graphical error
occurs though:
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 2 (BadValue), sequence: 12683, resource id: 0, major code: 53
(CreatePixmap), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 12684, resource id: 27265202, major code: 55
(CreateGC), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 12685, resource id: 27265202, major code: 72
(PutImage), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 2 (BadValue), sequence: 12686, resource id: 0, major code: 53
(CreatePixmap), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 12687, resource id: 27265204, major code: 55
(CreateGC), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 12688, resource id: 27265204, major code: 72
(PutImage), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 2 (BadValue), sequence: 12689, resource id: 0, major code: 53
(CreatePixmap), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 12690, resource id: 27265206, major code: 55
(CreateGC), minor code: 0
Jul 09 18:04:49 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 12691, resource id: 27265206, major code: 72
(PutImage), minor code: 0
Jul 09 18:05:12 fedora kwin_x11[1349]: OpenGL vendor string:
VMware, Inc.
Jul 09 18:05:12 fedora kwin_x11[1349]: OpenGL renderer string:
SVGA3D; build: RELEASE; LLVM;
Jul 09 18:05:12 fedora kwin_x11[1349]: OpenGL version string:
4.1 (Compatibility Profile) Mesa 22.1.3
Jul 09 18:05:12 fedora kwin_x11[1349]: OpenGL shading language version string:
4.10
Jul 09 18:05:12 fedora kwin_x11[1349]: Driver:
VMware (SVGA3D)
Jul 09 18:05:12 fedora kwin_x11[1349]: GPU class:
Unknown
Jul 09 18:05:12 fedora kwin_x11[1349]: OpenGL version:
4.1
Jul 09 18:05:12 fedora kwin_x11[1349]: GLSL version:
4.10
Jul 09 18:05:12 fedora kwin_x11[1349]: Mesa version:
22.1.3
Jul 09 18:05:12 fedora kwin_x11[1349]: X server version:
1.20.14
Jul 09 18:05:12 fedora kwin_x11[1349]: Linux kernel version:
5.18.9
Jul 09 18:05:12 fedora kwin_x11[1349]: Requires strict binding:
yes
Jul 09 18:05:12 fedora kwin_x11[1349]: GLSL shaders:
yes
Jul 09 18:05:12 fedora kwin_x11[1349]: Texture NPOT support:
yes
Jul 09 18:05:12 fedora kwin_x11[1349]: Virtual Machine:
yes
Jul 09 18:05:12 fedora kwin_x11[1349]: QObject::connect(KWin::InputMethod,
KWin::EffectsHandlerImpl): invalid nullptr parameter
Jul 09 18:05:12 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 4 (BadPixmap), sequence: 13008, resource id: 27265202, major code: 54
(FreePixmap), minor code: 0
Jul 09 18:05:12 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 13 (BadGC), sequence: 13009, resource id: 27265203, major code: 60
(FreeGC), minor code: 0
Jul 09 18:05:12 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 4 (BadPixmap), sequence: 13010, resource id: 27265204, major code: 54
(FreePixmap), minor code: 0
Jul 09 18:05:12 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 13 (BadGC), sequence: 13011, resource id: 27265205, major code: 60
(FreeGC), minor code: 0
Jul 09 18:05:12 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 4 (BadPixmap), sequence: 13012, resource id: 27265206, major code: 54
(FreePixmap), minor code: 0
Jul 09 18:05:12 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 13 (BadGC), sequence: 13013, resource id: 27265207, major code: 60
(FreeGC), minor code: 0
Jul 09 18:07:40 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 2 (BadValue), sequence: 15123, resource id: 0, major code: 53
(CreatePixmap), minor code: 0
Jul 09 18:07:40 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 15124, resource id: 27265414, major code: 55
(CreateGC), minor code: 0
Jul 09 18:07:40 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 15125, resource id: 27265414, major code: 72
(PutImage), minor code: 0
Jul 09 18:07:40 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 2 (BadValue), sequence: 15126, resource id: 0, major code: 53
(CreatePixmap), minor code: 0
Jul 09 18:07:40 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 15127, resource id: 27265416, major code: 55
(CreateGC), minor code: 0
Jul 09 18:07:40 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 9 (BadDrawable), sequence: 15128, resource id: 27265416, major code: 72
(PutImage), minor code: 0
Jul 09 18:07:40 fedora plasmashell[1378]: qt.qpa.xcb: QXcbConnection: XCB
error: 2 (BadValue), sequence: 15129, resource id: 0, major code: 53
(CreatePixmap), minor code: 0
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