void-linux
Qt6 crash: undefined symbol: version Qt_6_PRIVATE_API
Is this a new report?
Yes
System Info
Void 6.1.94_1 x86_64 AuthenticAMD uptodate FFFFFF
Package(s) Affected
qt6-*-6.6.0_1,qt6-*-6.7.2_1
Does a report exist for this bug with the project's home (upstream) and/or another distro?
No response
Expected behaviour
Qt applications such as K3b or PCManFM-Qt should start without any error.
Actual behaviour
Qt applications launched from a window manager do not run, and running them from a terminal gives an error such as pcmanfm-qt: symbol lookup error: /usr/lib/libQt6WaylandClient.so.6: undefined symbol: _ZTIN16QNativeInterface7Private14QWaylandScreenE, version Qt_6_PRIVATE_API
It could potentially be linked to several of the qt6 package updates but for now this is what I get.
Steps to reproduce
- Update qt6
- Launch a Qt application
It seems to be more than just qt6-wayland. qt6-wayland, qt6-svg, qt6-webchannel, and qt6-websockets were updated to 6.7.2_1, and this is the error now:
pcmanfm-qt: symbol lookup error: /usr/lib/libLayerShellQtInterface.so.6: undefined symbol: _ZN15QtWaylandClient14QWaylandWindow12handleExposeERK7QRegion, version Qt_6_PRIVATE_API
ImportError: /usr/lib/python3.12/site-packages/PyQt6/QtCore.abi3.so: undefined symbol: _ZN14QReadWriteLock16destroyRecursiveEP21QReadWriteLockPrivate, version Qt_6_PRIVATE_API
all matching cases online suggest towards rebuilding all qt6 apps against upstream qt6
Plasma 6 also fails to start due to the Qt6 update
plasmashell: symbol lookup error: /usr/lib/libLayerShellQtInterface.so.6: undefined symbol: _ZN15QtWaylandClient14QWaylandWindow12handleExposeERK7QRegion, version Qt_6_PRIVATE_API
With the latest updates i can't connect into plasma 6 using sddm, it loops back to sddm after entering the password...
With the latest updates i can't connect into plasma 6 using sddm, it loops back to sddm after entering the password...
Don't know why all comments including this one are saying resolved. Particularly this one. This is still a prominent issue.
With the latest updates i can't connect into plasma 6 using sddm, it loops back to sddm after entering the password...
Don't know why all comments including this one are saying resolved. Particularly this one. This is still a prominent issue.
They're queued to be rebuilt. I need to hide them to keep track of which one was processed.
Dunno if it's necessary to individually mention apps, but rssguard is also affected.
telegram-desktop affected too, telegram-desktop: symbol lookup error: telegram-desktop: undefined symbol: _ZN14QReadWriteLock16destroyRecursiveEP21QReadWriteLockPrivate, version Qt_6_PRIVATE_API
PCManFM-Qt and other applications now work with the latest packages that have finished building. Will close.
Is this resolved ?
Unless you're going to test all packages that requires Qt6, or rebuild all of them, no!
The issue has reappeared today with corectrl
Given the following update:
qt6-core update 6.8.2_5 6.10.0_1 -
qt6-dbus update 6.8.2_5 6.10.0_1 -
qt6-gui update 6.8.2_5 6.10.0_1 -
qt6-network update 6.8.2_5 6.10.0_1 -
qt6-opengl-widgets update 6.8.2_5 6.10.0_1 -
qt6-sql update 6.8.2_5 6.10.0_1 -
qt6-widgets update 6.8.2_5 6.10.0_1 -
corectrl produces the following output when run from a terminal:
corectrl: symbol lookup error: /usr/lib/libQt6Qml.so.6: undefined symbol: _ZN14QObjectPrivateC2Ei, version Qt_6_PRIVATE_API
Fix is downgrading as follows:
sudo xdowngrade /var/cache/xbps/qt6-core-6.8.2_5.x86_64.xbps /var/cache/xbps/qt6-dbus-6.8.2_5.x86_64.xbps /var/cache/xbps/qt6-gui-6.8.2_5.x86_64.xbps /var/cache/xbps/qt6-network-6.8.2_5.x86_64.xbps /var/cache/xbps/qt6-opengl-widgets-6.8.2_5.x86_64.xbps /var/cache/xbps/qt6-sql-6.8.2_5.x86_64.xbps /var/cache/xbps/qt6-widgets-6.8.2_5.x86_64.xbps
Given how commits into void-packages as of writing this seem to have ceased two hours ago with no further rebuilds being listed, I can't pinpoint this to a partial upgrade due to server compile latency
There are also packages like qt6-svg-6.8.2_1 seemingly still stuck on version 6.8 with no updates to 6.10 in sight. Missing rebuilds?
May be related to this: https://github.com/void-linux/void-packages/issues/57727
EDIT: Fixed an error on xdowngrade line and clarified some things
EDIT Again: Reading https://github.com/void-linux/void-packages/commit/a7de2992fa82ad9dc12bbba241a5abe6b31e64e2 it appears packages like qt6-svg-6.8.2_1 do indeed have a scheduled update to 6.10, although this doesn't appear to have dropped still. Buildbot x86_64 at https://build.voidlinux.org/#/builders/7/builds/3928 reports to be busy building a version of Chromium right now.
In the meantime, libqt6shadertools-6.10.0_1 has appeared in my update list, was absent before.
Hopefully it's just the buildbot being overwhelmed
I was dropped to a tty and KDE didn't even start after updating the system.
In addition to packages listed in @TeusLollo reply, I had to downgrade following to get my KDE system up again:
qt6-core, qt6-dbus, qt6-gui, qt6-network, qt6-opengl-widget, qt6-sql, qt6-svg, qt6-widget, qt6-concurrent, qt6-plugin-sqlite, qt6-plugin-tls-openssl, qt6-plugin-tls-qcertonly, qt6-xml, qt6-plugin-networkinformation, qt6-printsupport
Downgraded all of them from 6.10.0_1, back to 6.8.2_5.
I don't know if this is due to server updates not yet delivered / synced but this resolved the problem for me.
Been having similar issues, LXQT and SDDM don't even start. Gonna try to downgrade the packages and see if that fixes anything.
