SUMMARY Using VirtualBox (6.1.10, 6.1.14 and 6.1.16 tested) on Arch and Ubuntu based distros with Plasma 5.20 or newer, when trying to select image location and vm location the selection window freezes. Same behaviour on openSUSE Tumbleweed. STEPS TO REPRODUCE 1. Use Arch, Ubuntu or openSUSE with Plasma 5.20 or newer 2. Install VirtualBox 3. Start VirtualBox. Create vm. Select image or vm location. OBSERVED RESULT Selection window freezes. EXPECTED RESULT Window not freezing. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch, Ubuntu, openSUSE KDE Plasma Version: 5.20.0 - 5.20.2 KDE Frameworks Version: 5.75.0 Qt Version: 5.14 ADDITIONAL INFORMATION Bug found using different Linux distros and different kernels: Manjaro: Kernel 5.9.3, KDE 5.75.0, Plasma 5.20.2, VirtualBox 6.1.16 EndeavourOS: Kernel 5.9.6, KDE 5.75.0, Plasma 5.20.2, VirtualBox 6.1.16 KDE neon: Kernel 5.4.0, KDE 5.75.0, Plasma 5.20.2, VirtualBox 6.1.10 openSUSE: Kernel 5.9.1, KDE 5.75.0, Plasma 5.20.2, VirtualBox 6.1.14 On Debian (Kernel 5.6.0, Plasma 5.14.5) and (Kernel 5.7.0, Plasma 5.17.5) the bug does not exist.
As it's a freeze can you open VirtualBox in gdb and get a backtrace of the freeze please? Can you also unset KDE_SESSION_VERSION unset XDG_CURRENT_DESKTOP unset XDG_SESSION_DESKTOP and see if it's reproducible?
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!
The issue still exist, but it is NOT a freeze as reported, since the application is still operational. The problem occurs in some file dialogs, such as attaching a optical media to a VM, or change the target directory for snapshots. In these dialogs, mouse actions are not handled, that leads to the impression that the application hangs. In these circumstances, the focus has been set to the name field of the form and it is possible to type. The mouse pointer is visible and moving, but does not respond on any click. As a workaround, it is possible to change the focus using the TAB key, or the cursor/arrow keys to select an item. I am not sure, if it is a KDE issue, but I could not find any related report at the VirtualBox bugtracker. System-Information: ================== Operating System: Arch Linux KDE Plasma Version: 5.20.5 KDE Frameworks Version: 5.78.0 Qt Version: 5.15.2 Kernel Version: 5.10.6-arch1-1
Probably a VirtualBox bug. But just to be sure, I'd like to reproduce. The existing instructions are too unclear for my puny brain. Can someone write very clear, simple, Nate-friendly instructions? Thanks!
(In reply to Nate Graham from comment #5) > Probably a VirtualBox bug. But just to be sure, I'd like to reproduce. The > existing instructions are too unclear for my puny brain. Can someone write > very clear, simple, Nate-friendly instructions? Thanks! For example, open an existing VM, then call "Settings", and there the "Advanced" tab in the "General"section. In this tab, open the item "Snapshot Folder"and clock to "other" to change the folder. From now, you can't select any folder or any button with the mouse; just the keyboard still works. The same happen if you try to attach or change a ISO in the "Storage" section. After you clicked on the blue button for "Choose a a disk file..." you cannot select the ISO, or change to another folder, or select any item if the tool bar, or one of the buttons to open the file or cancel the dialog. If you still can't reproduce the behaviour, feel free to ask.
Thanks for those detailed instructions. When I follow them, the folder or file chooser dialogs work fine for me. I wonder if you would somehow be using non-KDE dialogs. Can you take a screenshot of what one of these non-moue-input-accepting dialogs looks like for you? Thanks!
Created attachment 136977 [details] file chooser dialog Sorry for the delay, here is the screenshot as requested. The mouse wheel for scrolling in the left bar (Places/Remote/Recent) does also not work, only the close button in the title bar react upon a mouse action.
Looks like it's the KDE one, thanks. Strange, I see the same thing and cannot reproduce the issue. Someone more experienced with performance tracing than I will need to debug further.
I found after some searches a related bug report now on the Oracle bug tracker: https://www.virtualbox.org/ticket/20222 There is also attached a "vbox-fix-file-picker.patch", but it seems only to be a workaround and not a real fix: https://bugs.mageia.org/show_bug.cgi?id=27433#c11
Based on the patch, if it works, then this is very much a VirtualBox bug. :) Thanks for tracking that down!
*** Bug 436478 has been marked as a duplicate of this bug. ***