Public bug reported: Repro:
* VirtualBox Version 5.2.8 r121009 (Qt5.6.2) * Windows 7 host * VirtualBox 3D Acceleration enabled, given 128MB video memory * VirtualBox guest additions installed. * Log in with either Ubuntu (Xorg) or GNOME (Xorg) (both are actually gnome-shell) * Open a File browser or a Terminal, or probably anything * Maximize the window (this part is also pretty slow) * Unmaximize the window Expected: * Maximize and unmaximize take a fraction of a second. System operates as normal afterwards. Actual * Maximize is already pretty slow - the first frame of the animation takes a few seconds to render and then freezes, then a few more seconds later the window is full screen. * Unmaximize just locks up gnome-shell for 30s or so. Eventually it repaints, but the shell is now completely unusable - no more repaints. I waited minutes and it still didn't come back to life. This happens 100% of the time. I *can* switch to another VT, and log in in text mode, and see that gnome-shell is occasionally showing activity at 40+%. I can switch back to GNOME and still see the frozen screen. NB: Unity works fine, as it did in 17.04. I suspect something that gnome-shell does with OpenGL that unity didn't do is triggering a software fallback or something. Is there any way to run a diagnostic to test / benchmark the OpenGL capabilities used by gnome-shell? Thanks, apologies in advance if I missed any critical information. Happy to provide more system details. ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1763401 Title: 17.10: gnome-shell regularly locks up in VirtualBox - unity is still fine To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1763401/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs