Virtualbox crashes when Windows 10 Guest enters Seamless mode

[dvasin]

I run Ubuntu 16.04, and I am trying to enable Seamless mode for a Windows 10 guest. I have Guest Addons installed in guest, but when I enable seamless mode, the VM aborts

[dvasin]

Log of session crash

[Frank Mehnert]

I guess the crash doesn't happen if you disable 3D?

[Gizmo]

Seeing similar issue on Fedora 23. Was running Windows 7 guest on VBox 5.0.26 and things were fine. Upgraded guest to Windows 10 and reinstalled VBox Guest Additions (the were removed by the upgrade). After that, things appeared to be fine, until I went to seamless mode and VM crashed. Mucked about with that for a while, with no success (machine runs in Full Screen or Windowed mode fine, go to seamless mode and it crashes). Uninstalled VBox 5.0.26, installed VBox 5.1.2.108956, installed VBox Guest Additions for 5.1.2, same results.

Turned off 3D acceleration, and now the machine runs without crashing when in seamless mode, however seamless mode is still useless because there is just garbage on the screen (a chunk of guest display here, a block of guest display there, with no guest display in between). For now I'm running in Windowed mode with 'Auto-resize guest display', which seems to work fine.

Please let me know if there is any additional information I can provide to help troubleshoot this.

[Gizmo]

I should also mention that I have a dual-headed display; my internal laptop display is 3200x1800, while my external monitor is 3840x2160. Both displays are made available to the guest from VBox. I tried disabling the 2nd display from the guest's display settings. I also tried turning off the 2nd monitor in VBox (so that it wasn't available to the guest). Neither setting made any difference.