I’m on fedora 44 lxqt labwc wayland session. My screengrab keep segmentation fault since yesterday(Sep 5). Do anyone have the same problem?
Did you do an update just before this started happening?
Have you looked the details of the crash?
Have a look at coredumpctl -r -n 5 do you see you screengrab in listed?
If so you can do coredump dump to dump the latest crash.
What does it report?
@fkole ,
I wasted too much time on this question. If you are really in a sesssion
labwc:wlroots as fastfetch shows DE then use one of these commands for screenshots:
grim -g "$(slurp)"
grim -g "$(slurp)" - | swappy -f -
grim - | wl-copy
Thanks for the pointers.I did an update just before this. That update updated many Qt things from 6.11.1 to 6.11.2.
coredumpctl dump
PID: 3470 (screengrab)
UID: 1000 (fkole)
GID: 1000 (fkole)
Signal: 11 (SEGV)
Timestamp: Sun 2026-09-06 22:56:53 CST (26min ago)
Command Line: /usr/bin/screengrab
Executable: /usr/bin/screengrab
Control Group: /user.slice/user-1000.slice/session-2.scope
Unit: session-2.scope
Slice: user-1000.slice
Session: 2
Owner UID: 1000 (fkole)
Boot ID: 87dc2f66fe644210aa4076ded815a097
Machine ID: 4a4af946bdad408283f9e5cf74d57290
Hostname: fedora
Storage: /var/lib/systemd/coredump/core.screengrab.1000.87dc2f66fe644210aa4076ded815a097.3470.1788706613000000.zst (present)
Size on Disk: 2M
Package: screengrab/3.2.0-2.fc44
build-id: 7eeffae58df04150636b8707d61ff90390f6a32c
Message: Process 3470 (screengrab) of user 1000 dumped core.
Module libp11-kit.so.0 from rpm p11-kit-0.26.5-1.fc44.x86_64
Module libdconfsettings.so from rpm dconf-0.49.0-5.fc44.x86_64
Module libwebpmux.so.3 from rpm libwebp-1.6.0-3.fc44.x86_64
Module libwebpdemux.so.2 from rpm libwebp-1.6.0-3.fc44.x86_64
Module libqwebp.so from rpm qt6-qtimageformats-6.11.2-1.fc44.x86_64
Module libqwbmp.so from rpm qt6-qtimageformats-6.11.2-1.fc44.x86_64
Module libqtiff.so from rpm qt6-qtimageformats-6.11.2-1.fc44.x86_64
Module libmng.so.2 from rpm libmng-2.0.3-25.fc44.x86_64
Module libqmng.so from rpm qt6-qtimageformats-6.11.2-1.fc44.x86_64
Module libqicns.so from rpm qt6-qtimageformats-6.11.2-1.fc44.x86_64
Module libjbig.so.2.1 from rpm jbigkit-2.1-33.fc44.x86_64
Module libLerc.so.4 from rpm liblerc-4.0.0-10.fc44.x86_64
Module libwebp.so.7 from rpm libwebp-1.6.0-3.fc44.x86_64
Module libtiff.so.6 from rpm libtiff-4.7.2-1.fc44.x86_64
Module libqsvg.so from rpm qt6-qtsvg-6.11.2-1.fc44.x86_64
Module libqjpeg.so from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libqico.so from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libqgif.so from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module kimg_xcf.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_tim.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_tga.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_sct.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_rgb.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module liblcms2.so.2 from rpm lcms2-2.16-7.fc44.x86_64
Module libraw.so.25 from rpm LibRaw-0.22.2-1.fc44.x86_64
Module kimg_raw.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_ras.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_qoi.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_pxr.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_psd.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_pic.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_pfm.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_pcx.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module libKF6Archive.so.6 from rpm kf6-karchive-6.29.0-1.fc44.x86_64
Module kimg_kra.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_jxl.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_jp2.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_iff.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module libbrotlienc.so.1 from rpm brotli-1.2.0-3.fc44.x86_64
Module libsharpyuv.so.0 from rpm libwebp-1.6.0-3.fc44.x86_64
Module libopenh264.so.8 from rpm openh264-2.6.0-3.fc44.x86_64
Module libopenjph.so.0.25 from rpm openjph-0.25.3-3.fc44.x86_64
Module libopenjp2.so.7 from rpm openjpeg-2.5.4-3.fc44.x86_64
Module libheif.so.1 from rpm libheif-1.21.2-1.fc44.x86_64
Module kimg_heif.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_hdr.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_ff.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module libdeflate.so.0 from rpm libdeflate-1.26-1.fc44.x86_64
Module libOpenEXRCore-3_2.so.31 from rpm openexr-3.2.4-7.fc44.x86_64
Module libIlmThread-3_2.so.31 from rpm openexr-3.2.4-7.fc44.x86_64
Module libImath-3_1.so.29 from rpm imath-3.1.12-6.fc44.x86_64
Module libIex-3_2.so.31 from rpm openexr-3.2.4-7.fc44.x86_64
Module libOpenEXR-3_2.so.31 from rpm openexr-3.2.4-7.fc44.x86_64
Module kimg_exr.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module libQt6PrintSupport.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module kimg_eps.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_dds.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module libvmaf.so.3 from rpm vmaf-3.0.0-5.fc44.x86_64
Module libjpeg.so.62 from rpm libjpeg-turbo-3.1.3-1.fc44.x86_64
Module libaom.so.3 from rpm aom-3.13.3-1.fc44.x86_64
Module libSvtAv1Enc.so.3 from rpm svt-av1-3.1.2-2.fc44.x86_64
Module librav1e.so.0 from rpm rust-rav1e-0.8.1-3.fc44.x86_64
Module libdav1d.so.7 from rpm dav1d-1.5.3-1.fc44.x86_64
Module libyuv.so.0 from rpm libyuv-0-0.61.20260213git6067afd.fc44.x86_64
Module libavif.so.16 from rpm libavif-1.3.0-4.fc44.x86_64
Module kimg_avif.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module kimg_ani.so from rpm kf6-kimageformats-6.29.0-1.fc44.x86_64
Module libkvantum.so from rpm kvantum-1.1.6-1.fc44.x86_64
Module libdbusmenu-lxqt.so.0 from rpm libdbusmenu-lxqt-0.4.0-1.fc44.x86_64
Module libqtlxqt.so from rpm lxqt-qtplugin-2.4.0-2.fc44.x86_64
Module libxdg-shell.so from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libqwayland.so from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libudev.so.1 from rpm systemd-259.8-1.fc44.x86_64
Module libcbor.so.0.13 from rpm libcbor-0.13.0-2.fc44.x86_64
Module libcrypt.so.2 from rpm libxcrypt-4.5.2-3.fc44.x86_64
Module libfido2.so.1 from rpm libfido2-1.16.0-5.fc44.x86_64
Module libsasl2.so.3 from rpm cyrus-sasl-2.1.28-35.fc44.x86_64
Module libevent-2.1.so.7 from rpm libevent-2.1.12-17.fc44.x86_64
Module libunistring.so.5 from rpm libunistring-1.1-11.fc44.x86_64
Module libssl.so.3 from rpm openssl-3.5.8-1.fc44.x86_64
Module libpsl.so.5 from rpm libpsl-0.21.5-7.fc44.x86_64
Module libssh.so.4 from rpm libssh-0.12.2-1.fc44.x86_64
Module libidn2.so.0 from rpm libidn2-2.3.8-3.fc44.x86_64
Module libnghttp2.so.14 from rpm nghttp2-1.68.0-5.fc44.x86_64
Module libngtcp2.so.16 from rpm ngtcp2-1.22.1-1.fc44.x86_64
Module libngtcp2_crypto_ossl.so.0 from rpm ngtcp2-1.22.1-1.fc44.x86_64
Module libnghttp3.so.9 from rpm nghttp3-1.18.0-1.fc44.x86_64
Module liblzma.so.5 from rpm xz-5.8.2-2.fc44.x86_64
Module libblkid.so.1 from rpm util-linux-2.41.5-1.fc44.x86_64
Module libduktape.so.207 from rpm duktape-2.7.0-11.fc44.x86_64
Module libcurl.so.4 from rpm curl-8.18.0-9.fc44.x86_64
Module libicudata.so.77 from rpm icu-77.1-3.fc44.x86_64
Module libbz2.so.1 from rpm bzip2-1.0.8-23.fc44.x86_64
Module libgraphite2.so.3 from rpm graphite2-1.3.14-20.fc44.x86_64
Module libXext.so.6 from rpm libXext-1.3.6-5.fc44.x86_64
Module libxml2.so.2 from rpm libxml2-2.12.10-6.fc44.x86_64
Module libGLdispatch.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
Module libselinux.so.1 from rpm libselinux-3.11-1.fc44.x86_64
Module libmount.so.1 from rpm util-linux-2.41.5-1.fc44.x86_64
Module libgmodule-2.0.so.0 from rpm glib2-2.88.3-1.fc44.x86_64
Module libpcre2-8.so.0 from rpm pcre2-10.47-1.fc44.1.x86_64
Module libQt6Svg.so.6 from rpm qt6-qtsvg-6.11.2-1.fc44.x86_64
Module libpxbackend-1.0.so from rpm libproxy-0.5.12-2.fc44.x86_64
Module libbrotlicommon.so.1 from rpm brotli-1.2.0-3.fc44.x86_64
Module libkeyutils.so.1 from rpm keyutils-1.6.3-7.fc44.x86_64
Module libkrb5support.so.0 from rpm krb5-1.22.2-4.fc44.x86_64
Module libcom_err.so.2 from rpm e2fsprogs-1.47.3-4.fc44.x86_64
Module libk5crypto.so.3 from rpm krb5-1.22.2-4.fc44.x86_64
Module libkrb5.so.3 from rpm krb5-1.22.2-4.fc44.x86_64
Module libpcre2-16.so.0 from rpm pcre2-10.47-1.fc44.1.x86_64
Module libb2.so.1 from rpm libb2-0.98.1-15.fc44.x86_64
Module libdouble-conversion.so.3 from rpm double-conversion-3.4.0-3.fc44.x86_64
Module libsystemd.so.0 from rpm systemd-259.8-1.fc44.x86_64
Module libicuuc.so.77 from rpm icu-77.1-3.fc44.x86_64
Module libicui18n.so.77 from rpm icu-77.1-3.fc44.x86_64
Module libffi.so.8 from rpm libffi-3.5.2-2.fc44.x86_64
Module libdbus-1.so.3 from rpm dbus-1.16.2-1.fc44.x86_64
Module libfreetype.so.6 from rpm freetype-2.14.3-1.fc44.x86_64
Module libharfbuzz.so.0 from rpm harfbuzz-14.1.0-2.fc44.x86_64
Module libpng16.so.16 from rpm libpng-1.6.58-1.fc44.x86_64
Module libOpenGL.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
Module libGLX.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
Module libfontconfig.so.1 from rpm fontconfig-2.17.0-4.fc44.x86_64
Module libEGL.so.1 from rpm libglvnd-1.7.0-9.fc44.x86_64
Module libxkbcommon.so.0 from rpm libxkbcommon-1.13.1-2.fc44.x86_64
Module libwayland-cursor.so.0 from rpm wayland-1.25.0-1.fc44.x86_64
Module libgio-2.0.so.0 from rpm glib2-2.88.3-1.fc44.x86_64
Module libgobject-2.0.so.0 from rpm glib2-2.88.3-1.fc44.x86_64
Module libglib-2.0.so.0 from rpm glib2-2.88.3-1.fc44.x86_64
Module libQt6XdgIconLoader.so.4 from rpm libqtxdg-4.4.0-5.fc44.x86_64
Module libQt6Xml.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libcrypto.so.3 from rpm openssl-3.5.8-1.fc44.x86_64
Module libproxy.so.1 from rpm libproxy-0.5.12-2.fc44.x86_64
Module libz.so.1 from rpm zlib-ng-2.3.3-3.fc44.x86_64
Module libzstd.so.1 from rpm zstd-1.5.7-5.fc44.x86_64
Module libbrotlidec.so.1 from rpm brotli-1.2.0-3.fc44.x86_64
Module libgssapi_krb5.so.2 from rpm krb5-1.22.2-4.fc44.x86_64
Module libxcb-keysyms.so.1 from rpm xcb-util-keysyms-0.4.1-9.fc44.x86_64
Module libXfixes.so.3 from rpm libXfixes-6.0.1-7.fc44.x86_64
Module libxcb-res.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
Module libX11.so.6 from rpm libX11-1.8.13-1.fc44.x86_64
Module libXau.so.6 from rpm libXau-1.0.12-4.fc44.x86_64
Module libxcb.so.1 from rpm libxcb-1.17.0-7.fc44.x86_64
Module libQt6Core.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libwayland-client.so.0 from rpm wayland-1.25.0-1.fc44.x86_64
Module libQt6DBus.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libQt6Gui.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libQt6WaylandClient.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libQt6Widgets.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libQt6Xdg.so.4 from rpm libqtxdg-4.4.0-5.fc44.x86_64
Module libLayerShellQtInterface.so.6 from rpm layer-shell-qt-6.7.4-2.fc44.x86_64
Module libQt6Network.so.6 from rpm qt6-qtbase-6.11.2-2.fc44.x86_64
Module libKF6WindowSystem.so.6 from rpm kf6-kwindowsystem-6.29.0-1.fc44.x86_64
Module libxcb-xfixes.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
Module libX11-xcb.so.1 from rpm libX11-1.8.13-1.fc44.x86_64
Module screengrab from rpm screengrab-3.2.0-2.fc44.x86_64
Stack trace of thread 3470:
#0 0x00005639142f6a32 _ZN4LXQt7Wayland10ScreenShotC2EbP7QScreenRK5QRectP7QObject (screengrab + 0x33a32)
#1 0x00005639142d03f4 _ZN4Core10screenShotEbb (screengrab + 0xd3f4)
#2 0x00005639142c8e99 main (screengrab + 0x5e99)
#3 0x00007f0ed320a681 __libc_start_call_main (libc.so.6 + 0x3681)
#4 0x00007f0ed320a798 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3798)
#5 0x00005639142ca7f5 _start (screengrab + 0x77f5)
Stack trace of thread 3472:
#0 0x00007f0ed3282312 __syscall_cancel_arch (libc.so.6 + 0x7b312)
#1 0x00007f0ed327652c __internal_syscall_cancel (libc.so.6 + 0x6f52c)
#2 0x00007f0ed3276877 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f877)
#3 0x00007f0ed32790cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x720cc)
#4 0x00007f0ed3b1032b _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x31032b)
#5 0x00007f0ed549e3de _ZN15QtWaylandClient11EventThread3runEv (libQt6WaylandClient.so.6 + 0x243de)
#6 0x00007f0ed3b0788f _ZN14QThreadPrivate5startEPv (libQt6Core.so.6 + 0x30788f)
#7 0x00007f0ed3279c19 start_thread (libc.so.6 + 0x72c19)
#8 0x00007f0ed32fd5cc __clone3 (libc.so.6 + 0xf65cc)
Stack trace of thread 3474:
#0 0x00007f0ed3282312 __syscall_cancel_arch (libc.so.6 + 0x7b312)
#1 0x00007f0ed327652c __internal_syscall_cancel (libc.so.6 + 0x6f52c)
#2 0x00007f0ed3276574 __syscall_cancel (libc.so.6 + 0x6f574)
#3 0x00007f0ed32f0426 ppoll (libc.so.6 + 0xe9426)
#4 0x00007f0ed28e6125 g_main_context_iterate_unlocked.isra.0 (libglib-2.0.so.0 + 0x48125)
#5 0x00007f0ed28e61e3 g_main_context_iteration (libglib-2.0.so.0 + 0x481e3)
#6 0x00007f0ed28e6231 glib_worker_main (libglib-2.0.so.0 + 0x48231)
#7 0x00007f0ed291bc52 g_thread_proxy (libglib-2.0.so.0 + 0x7dc52)
#8 0x00007f0ed3279c19 start_thread (libc.so.6 + 0x72c19)
#9 0x00007f0ed32fd5cc __clone3 (libc.so.6 + 0xf65cc)
Stack trace of thread 3471:
#0 0x00007f0ed3282312 __syscall_cancel_arch (libc.so.6 + 0x7b312)
#1 0x00007f0ed327652c __internal_syscall_cancel (libc.so.6 + 0x6f52c)
#2 0x00007f0ed3276574 __syscall_cancel (libc.so.6 + 0x6f574)
#3 0x00007f0ed32f0426 ppoll (libc.so.6 + 0xe9426)
#4 0x00007f0ed28e6125 g_main_context_iterate_unlocked.isra.0 (libglib-2.0.so.0 + 0x48125)
#5 0x00007f0ed28e61e3 g_main_context_iteration (libglib-2.0.so.0 + 0x481e3)
#6 0x00007f0ed3c5defd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x45defd)
#7 0x00007f0ed391a78b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x11a78b)
#8 0x00007f0ed3a4b34a _ZN7QThread4execEv (libQt6Core.so.6 + 0x24b34a)
#9 0x00007f0ed4b3e5c4 _ZN22QDBusConnectionManager3runEv (libQt6DBus.so.6 + 0x255c4)
#10 0x00007f0ed3b0788f _ZN14QThreadPrivate5startEPv (libQt6Core.so.6 + 0x30788f)
#11 0x00007f0ed3279c19 start_thread (libc.so.6 + 0x72c19)
#12 0x00007f0ed32fd5cc __clone3 (libc.so.6 + 0xf65cc)
Stack trace of thread 3473:
#0 0x00007f0ed3282312 __syscall_cancel_arch (libc.so.6 + 0x7b312)
#1 0x00007f0ed327652c __internal_syscall_cancel (libc.so.6 + 0x6f52c)
#2 0x00007f0ed3276574 __syscall_cancel (libc.so.6 + 0x6f574)
#3 0x00007f0ed32efdfe __poll (libc.so.6 + 0xe8dfe)
#4 0x00007f0ed549e43b _ZN15QtWaylandClient11EventThread3runEv (libQt6WaylandClient.so.6 + 0x2443b)
#5 0x00007f0ed3b0788f _ZN14QThreadPrivate5startEPv (libQt6Core.so.6 + 0x30788f)
#6 0x00007f0ed3279c19 start_thread (libc.so.6 + 0x72c19)
#7 0x00007f0ed32fd5cc __clone3 (libc.so.6 + 0xf65cc)
ELF object binary architecture: AMD x86-64
My AI agent told that it’s because screengrab expect 6.11.1 shared objects but now they are 6.11.2. And Qt 6.11.2 added a wp_pointer_warp_v1 member to QWaylandDisplay::mGlobals, shifting mRegistryGlobals from offset 408 to 416.
I have filed a bugzilla.