I am running vanilla 64-bit Ubuntu 14.04 LTS in latest VirtualBox (5.1.12) under Windows 7. I have VB's latest Guest Additions installed. I have switched VB's Display Enable 3D Acceleration on. I have an NVidia GeForce GTS 450. The output from /usr/lib/nux/unity_support_test -p
is all "yes", FWIW.
All seems to be well, until I run Qt Creator (3.0.1). The screen comes up OK, with the window "furniture" borders and the central pane. But then I can interact with the window borders OK, but the main central pane stays fixed on the desktop (e.g. if I "minimize" Qt via the icon in the window border), no menus etc. are shown over it, and the whole thing is unusable.
Is this a VirtualBox, Ubuntu or Qt Creator issue? Does this happen to others of you? Any suggestions (other than switch 3D Acceleration off,which I have done for now, and then it works OK)?
I got the solution from https://dmitryfrank.com/blog/2015/0716_qt_creator_in_virtualbox_with_windows_guest_os
Reboot not needed:
Start qtcreator using:
in QT creator folder (i.e.
C:\Qt\Qt5.7.0\Tools\QtCreator\bin
). Then you can disable the welcome plugin without reboot.see also https://stackoverflow.com/questions/28325095/qt-creator-hangs-in-ubuntu-virtualbox
I also had the same problem, and deactivating either 3D or the Welcome screen was not an option for me. I just discovered by chance however that uninstalling the VBox-Guest-Additions works:
Tried this in Ubuntu16 with the latest version of qt-creator (4.2.2). I'm not sure if this is a Qt-Creator or VBox bug!
Try disabling Line Annotations in Text Editor settings. It worked for me.
I was having similar problems, but mostly when I open my code with lots of warnings scrolling through that code used to freeze the qt creator and also the Ubuntu VBox guest for an awful while.