Thread: Sigil crashes in UbutuStudio 26.04
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Old 05-01-2026, 07:57 AM   #20
philja
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Quote:
Originally Posted by KevinH View Post
One last thing to try, please modify your env-vars.txt file to enable more debug output as follows:

Code:
QTWEBENGINE_CHROMIUM_FLAGS="--enable-logging"
QT_LOGGING_RULES="qt.webenginecontext=true;qt.webengine.compositor=true"
Then try starting up Sigil from a terminal command line prompt.

If that doesn't show any debug info, then I am out of ideas.

Please let me know what you find.

As I do not have the same shared libraries as you do, your coredump will not be any use to me even though I have Linux.
OK - I edited env-vars.txt to have just your two lines above and launched Sigil from the
command line. It crashed as expected.

Here is what I saw in the terminal:

Spoiler:
$ AppImages/Sigil-2.7.6-x86_64.AppImage
/tmp/.mount_Sigil-FBBLGM/usr/share/sigil
/tmp/.mount_Sigil-FBBLGM/usr/lib:
Warning: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium.
[7098:7098:0501/134556.889694:INFO:zygote_host_impl_linux.cc(132)] No usable sandbox! If you are running on Ubuntu 23.10+ or another Linux distro that has disabled unprivileged user namespaces with AppArmor, see https://chromium.googlesource.com/ch...estrictions.md. Otherwise see https://chromium.googlesource.com/ch...development.md for more information on developing with the (older) SUID sandbox. If you want to live dangerously and need an immediate workaround, you can try using --no-sandbox.
[7098:7098:0501/134557.830782:WARNINGzone_platform_qt.cpp(218)] Failed to load keymap file, falling back to StubKeyboardLayoutEngine
[7098:7131:0501/134558.020791:WARNING:viz_main_impl.cc(85)] VizNullHypothesis is disabled (not a warning)
Warning: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: App info not found for 'sigil'")
Segmentation fault (core dumped) AppImages/Sigil-2.7.6-x86_64.AppImage


and this is what was in the crash report :

Spoiler:
PID: 7098 (sigil)
UID: 1000 (pnj)
GID: 1000 (pnj)
Signal: 11 (SEGV)
Timestamp: Fri 2026-05-01 13:46:11 CEST (7s ago)
Command Line: /tmp/.mount_Sigil-FBBLGM/usr/bin/sigil
Executable: /tmp/.mount_Sigil-FBBLGM/usr/bin/sigil
Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-org.kde.konsole-7056.scope/tab(7067).scope
Unit: user@1000.service
User Unit: app-org.kde.konsole-7056.scope
Slice: user-1000.slice
Owner UID: 1000 (pnj)
Boot ID: 56c3be01108145919c50b4826c9776dc
Machine ID: e148b6f0022d4180b9c68845ac1ca1a9
Hostname: hostname
Storage: /var/lib/systemd/coredump/core.sigil.1000.56c3be01108145919c50b4826c9776dc.7 098.1777635971000000.zst (present)
Size on Disk: 15.9M
Message: Process 7098 (sigil) of user 1000 dumped core.

Module /tmp/.mount_Sigil-FBBLGM/usr/bin/sigil without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/bin/sigil
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/site-packages/lxml/etree.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/site-packages/lxml/etree.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqwebp.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqwebp.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libjpeg.so.8 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libjpeg.so.8
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqwbmp.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqwbmp.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libdeflate.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libwebp.so.7 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libwebp.so.7
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libtiff.so.5 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libtiff.so.5
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqjpeg.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqjpeg.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqtiff.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqtiff.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqtga.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqtga.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqsvg.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqsvg.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqpdf.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqpdf.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/pyexpat.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/pyexpat.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_elementtree.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_elementtree.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libcrypto.so.3 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libcrypto.so.3
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqico.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqico.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqicns.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqicns.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqgif.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/imageformats/libqgif.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/iconengines/libqsvgicon.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/iconengines/libqsvgicon.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_random.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_random.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_zstd.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_zstd.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_lzma.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_lzma.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_bz2.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_bz2.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_ssl.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_ssl.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/math.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/math.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/unicodedata.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/unicodedata.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_blake2.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_blake2.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_hashlib.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_hashlib.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/zlib.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/zlib.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_struct.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_struct.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_socket.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_socket.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_bisect.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/_bisect.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/binascii.cpython-314-x86_64-linux-gnu.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/python3.14/lib-dynload/binascii.cpython-314-x86_64-linux-gnu.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libmd.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libmd.so.0
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxcb-sync.so.1 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxcb-sync.so.1
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxcb-shm.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxcb-xfixes.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxcb-xfixes.so.0
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxcb-randr.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxcb-randr.so.0
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/wayland-graphics-integration-client/libqt-plugin-wayland-egl.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/wayland-graphics-integration-client/libqt-plugin-wayland-egl.so
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/wayland-shell-integration/libxdg-shell.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/wayland-shell-integration/libxdg-shell.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libffi.so.8 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libffi.so.8
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libkeyutils.so.1 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libkeyutils.so.1
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libk5crypto.so.3 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libk5crypto.so.3
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libbrotlicommon.so.1 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libkrb5support.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libkrb5support.so.0
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libgssapi_krb5.so.2 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libgssapi_krb5.so.2
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libzstd.so.1 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libzstd.so.1
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libbrotlidec.so.1 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libpng16.so.16 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libpng16.so.16
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxkbfile.so.1 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxkbfile.so.1
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libnspr4.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libnspr4.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libplds4.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libplc4.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libplc4.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libnss3.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libnss3.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libgthread-2.0.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libsmime3.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libsmime3.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libnssutil3.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libnssutil3.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libXtst.so.6 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libXtst.so.6
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxkbcommon.so.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libxkbcommon.so.0
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libpython3.14.so.1.0 without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libpython3.14.so.1.0
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/platforms/libqwayland.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/plugins/platforms/libqwayland.so
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libhunspell.so without build-id.
Module /tmp/.mount_Sigil-FBBLGM/usr/lib/libhunspell.so
Module linux-vdso.so.1 from deb linux-7.0.0-14.14.amd64
Module libnss_mdns4_minimal.so.2 from deb nss-mdns-0.15.1-5.amd64
Module liblzma.so.5 from deb xz-utils-5.8.3-1.amd64
Module libVkLayer_MESA_device_select.so from deb mesa-26.0.3-1ubuntu1.amd64
Module libvulkan_lvp.so from deb mesa-26.0.3-1ubuntu1.amd64
Module libvulkan_intel.so from deb mesa-26.0.3-1ubuntu1.amd64
Module libvulkan_nouveau.so from deb mesa-26.0.3-1ubuntu1.amd64
Module libdisplay-info.so.3 from deb libdisplay-info-0.3.0-1.amd64
Module libvulkan.so.1 from deb vulkan-loader-1.4.341.0-1.amd64
Module libbsd.so.0 from deb libbsd-0.12.2-2build2.amd64
Module libtinfo.so.6 from deb ncurses-6.6+20251231-1.amd64
Module libpciaccess.so.0 from deb libpciaccess-0.18.1-1ubuntu4.amd64
Module libxml2.so.16 from deb libxml2-2.15.2+dfsg-0.1.amd64
Module libedit.so.2 from deb libedit-3.1-20251016-1.amd64
Module libdrm_intel.so.1 from deb libdrm-2.4.131-1.amd64
Module libdrm_amdgpu.so.1 from deb libdrm-2.4.131-1.amd64
Module libelf.so.1 from deb elfutils-0.194-4.amd64
Module libxshmfence.so.1 from deb libxshmfence-1.3.3-1build1.amd64
Module libsensors.so.5 from deb lm-sensors-1:3.6.2-2build1.amd64
Module libLLVM.so.21.1 from deb llvm-toolchain-21-1:21.1.8-6ubuntu1.amd64
Module libxcb-present.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libX11-xcb.so.1 from deb libx11-2:1.8.13-1.amd64
Module libgallium-26.0.3-1ubuntu1.so from deb mesa-26.0.3-1ubuntu1.amd64
Module libEGL_mesa.so.0 from deb mesa-26.0.3-1ubuntu1.amd64
Module libwayland-egl.so.1 from deb wayland-1.24.0-2.amd64
Module libgraphite2.so.3 from deb graphite2-1.3.14-11ubuntu1.amd64
Module libharfbuzz.so.0 from deb harfbuzz-12.3.2-2.amd64
Module libwayland-cursor.so.0 from deb wayland-1.24.0-2.amd64
Module libwayland-client.so.0 from deb wayland-1.24.0-2.amd64
Module libcom_err.so.2 from deb e2fsprogs-1.47.2-3ubuntu4.amd64
Module libpcre2-8.so.0 from deb pcre2-10.46-1build1.amd64
Module libatomic.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64
Module libdrm.so.2 from deb libdrm-2.4.131-1.amd64
Module libXdmcp.so.6 from deb libxdmcp-1:1.1.5-2.amd64
Module libXau.so.6 from deb libxau-1:1.0.11-1build2.amd64
Module libsystemd.so.0 from deb systemd-259.5-0ubuntu3.amd64
Module libXrender.so.1 from deb libxrender-1:0.9.12-1build1.amd64
Module libGLdispatch.so.0 from deb libglvnd-1.7.0-3.amd64
Module libglib-2.0.so.0 from deb glib2.0-2.88.0-1.amd64
Module libEGL.so.1 from deb libglvnd-1.7.0-3.amd64
Module libgbm.so.1 from deb mesa-26.0.3-1ubuntu1.amd64
Module libasound.so.2 from deb alsa-lib-1.2.15.3-1ubuntu1.amd64
Module libxcb.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libexpat.so.1 from deb expat-2.7.4-1.amd64
Module libfreetype.so.6 from deb freetype-2.14.2+dfsg-1.amd64
Module libfontconfig.so.1 from deb fontconfig-2.17.1-3ubuntu1.amd64
Module libdbus-1.so.3 from deb dbus-1.16.2-2ubuntu4.amd64
Module libXrandr.so.2 from deb libxrandr-2:1.5.4-1build1.amd64
Module libXfixes.so.3 from deb libxfixes-1:6.0.0-2build2.amd64
Module libXext.so.6 from deb libxext-2:1.3.4-1build3.amd64
Module libXdamage.so.1 from deb libxdamage-1:1.1.7-1.amd64
Module libXcomposite.so.1 from deb libxcomposite-1:0.4.6-1build1.amd64
Module libX11.so.6 from deb libx11-2:1.8.13-1.amd64
Module libxcb-dri3.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libz.so.1 from deb zlib-1:1.3.dfsg+really1.3.1-1ubuntu3.amd64
Module libGL.so.1 from deb libglvnd-1.7.0-3.amd64
Module libgcc_s.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64
Module libstdc++.so.6 from deb gcc-16-16-20260322-1ubuntu1.amd64
Module libOpenGL.so.0 from deb libglvnd-1.7.0-3.amd64
Module libGLX.so.0 from deb libglvnd-1.7.0-3.amd64
Stack trace of thread 7098:
#0 0x00007fd07de9246c n/a (libgallium-26.0.3-1ubuntu1.so + 0x129246c)
#1 0x00007fd07ce0639d n/a (libgallium-26.0.3-1ubuntu1.so + 0x20639d)
#2 0x00007fd07cdf1ea8 n/a (libgallium-26.0.3-1ubuntu1.so + 0x1f1ea8)
#3 0x00007fd07d0b819f n/a (libgallium-26.0.3-1ubuntu1.so + 0x4b819f)
#4 0x00007fd07d0b910f n/a (libgallium-26.0.3-1ubuntu1.so + 0x4b910f)
#5 0x00007fd0954aa405 n/a (/tmp/.mount_Sigil-FBBLGM/usr/lib/libQt6WebEngineCore.so.6 + 0xcaa405)
#6 0x00007fd09546943e n/a (/tmp/.mount_Sigil-FBBLGM/usr/lib/libQt6WebEngineCore.so.6 + 0xc6943e)
#7 0x00007fd091ed4948 n/a (/tmp/.mount_Sigil-FBBLGM/usr/lib/libQt6Quick.so.6 + 0x2d4948)
ELF object binary architecture: AMD x86-64


Hope you can see something useful there.
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