VB crash on resuming from VB display put to sleep by guest

[meow9th]

Win 7 host, Xubuntu 12.04 guest

This crash is only 50% reproducible (based on 6 trials with the same settings).

What I did:

1. Set guest to sleep display after 1 minute (Settings -> Power Management)
2. Waited for guest to sleep display
3. Moved mouse after VB display went blank

After step 3, I would either experience a 'VB has crashed' error from host (related to MSVCR100.dll), or guest would resume with no problems.

Attached are Windows logs with the VB crashes and VB logs.

Possibly relevant settings:

• VM has 3 displays, always run in fullscreen mode
• 3D acceleration enabled

Additional notes:

I also played with the guest setting to switch the display off (instead of sleeping). Three trials yielded no crashes (although in one trial the guest display was screwed up; after redrawing it was fine).

I also briefly tested the host, having it sleep and turn off the display before the guest was set to do so. Only one trial each, no problem either time.

I think these crashes only started after I updated VB to 4.2.4. I have been using these settings for a very long time (a year?) and never had any problems until now.

My workaround is to set the guest to never sleeping or switching off the display.

[meow9th]

Windows event log

[meow9th]

Vbox.log

[meow9th]

Vbox.log.1

[meow9th]

VBox.log.2

[meow9th]

VBox.log.3

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.