Public bug reported: Installed with:
``` sudo apt install heaptrack-gui ``` (But the launchpad UI doesn't seem to recognize it) This is what happens: ``` $ heaptrack_gui QSocketNotifier: Can only be used with threads started with QThread Must construct a QGuiApplication first. QObject::connect: Cannot connect (nullptr)::cursorRectangleChanged() to QIBusPlatformInputContext::cursorRectChanged() Segmentation fault ``` I suppose this is something to do with KDE/QT and XWayland (!?!?) -- the internet is plagued by this "QSocketNotifier" Can only be used with threads..." error, so it's not very helpful. I also tried: ``` $ LIBGL_ALWAYS_SOFTWARE=1 QT_QUICK_BACKEND=software QT_QPA_PLATFORM=xcb heaptrack_gui Segmentation fault ``` Finally, I installed the AppImage from https://download.kde.org/stable/heaptrack/1.5.0/heaptrack-v1.5.0-x86_64.AppImage. And that seems to work. System: Ubuntu 25.10 / XWayland. ProblemType: Bug DistroRelease: Ubuntu 25.10 Package: heaptrack 1.5.0+dfsg1-4ubuntu5 ProcVersionSignature: Ubuntu 6.17.0-7.7-generic 6.17.2 Uname: Linux 6.17.0-7-generic x86_64 ApportVersion: 2.33.1-0ubuntu3 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Dec 9 12:14:43 2025 InstallationDate: Installed on 2023-07-05 (888 days ago) InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418) SourcePackage: heaptrack UpgradeStatus: Upgraded to questing on 2025-10-10 (60 days ago) ** Affects: heaptrack (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug questing wayland-session ** Description changed: Installed with: ``` - sudo apt install heaptrack-ui + sudo apt install heaptrack-gui ``` (But the launchpad UI doesn't seem to recognize it) This is what happens: ``` $ heaptrack_gui QSocketNotifier: Can only be used with threads started with QThread Must construct a QGuiApplication first. QObject::connect: Cannot connect (nullptr)::cursorRectangleChanged() to QIBusPlatformInputContext::cursorRectChanged() Segmentation fault ``` I suppose this is something to do with KDE/QT and XWayland (!?!?) -- the internet is plagued by this "QSocketNotifier" Can only be used with threads..." error, so it's not very helpful. I also tried: ``` $ LIBGL_ALWAYS_SOFTWARE=1 QT_QUICK_BACKEND=software QT_QPA_PLATFORM=xcb heaptrack_gui Segmentation fault ``` Finally, I installed the AppImage from https://download.kde.org/stable/heaptrack/1.5.0/heaptrack-v1.5.0-x86_64.AppImage. And that seems to work. - System: Ubuntu 25.10 / XWayland. ProblemType: Bug DistroRelease: Ubuntu 25.10 Package: heaptrack 1.5.0+dfsg1-4ubuntu5 ProcVersionSignature: Ubuntu 6.17.0-7.7-generic 6.17.2 Uname: Linux 6.17.0-7-generic x86_64 ApportVersion: 2.33.1-0ubuntu3 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Dec 9 12:14:43 2025 InstallationDate: Installed on 2023-07-05 (888 days ago) InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418) SourcePackage: heaptrack UpgradeStatus: Upgraded to questing on 2025-10-10 (60 days ago) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2134463 Title: heaptrack-gui (heaptrack_gui) crashes at startup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/heaptrack/+bug/2134463/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
