Guests freeze on Windows host

[Jamie Tyndall]

Using an HP zBook 12th Gen Intel(R) Core(TM) i7-12800H 2.40 GHz with an embedded NVIDIA RTX A2000 8GB Laptop GPU. Host is running Windows 11 22H2 build 22621.1845. Guest is Windows 10 22H2 Build 19045.2846, 256mb video ram, 8gb memory, 8 processors.

The guest display will stop responding even though the VM will keep running. If I un-fullscreen (LeftCTRL+F) the VM, the display will begin responding and processing any keystrokes and mouse actions. When it locks up again, another fullscreen toggle will get it moving again.

Have tried downgrading the host and VM to 6.1.42 without any success. Freezes seem less frequent, but still occurring.

[Feuerfloh]

I've experiencing exactly the same issue; the VM freezes after some time. toggling to full screen and back will resume the VM for a while but then the next freeze will occur sooner or later.

I attached two log files - "..01" was recorded when Guest Additions V7.0.8 was installed; "...02" was recorded with a recent development version of Guest Additions. In both files you can find several entries like this:

VMMDev: vmmDevHeartbeatFlatlinedTimer: Guest seems to be unresponsive. Last heartbeat received 16 seconds ago

A guest running Windows is affected several times and more often the longer the VM runs. A Linux guest needs usually only one "fullscreen toggle" to resume operation.

[Feuerfloh]

Additional info: if the VM is frozen then the corresponding "VirtualBox" process on the host machine uses one (virtual) CPU core by 100% and there's no I/O activity at all.

[carsten schlote]

Same problem here (manjaro, VBox 7.0.8) with Win11, but fullscreen toggling doesn't fix it. The 'VirtualBoxVM' Process is using 100% of CPU time on all CPU cores assigned to the virtual machine. Without VBox Guest Tools installed the VM is running and the freeze happens only once. After installing the Guest Tools the freeze happens after < 1 min.

[carsten schlote]

Additional info: Problem started after update to win11 22H2.Before the update the VM was stable and did not freeze.

[carsten schlote]

Wenn switching from VBoxSVGA to VBoxVGA for the Win11 installation, the freeze problem is gone. Max display resolution is limited to FullHD, but otherweise the system is running.