Long continuing keypress freezes WindowsXp-Host

[Karsten Steingaß]

Hi,

If I press a key on the keyboard for a very long time the input devices and maybe the whole system freezes until the key is released.

I first encountered this while "walking" in a 3D video game, where this bug also results in a Network-Lag but it not only happens in games it also can be reproduced on the Desktop.

The guest OS here is Windows XP with SP3, with a 2 CPU host and guest.

Steps to reproduce:

1. Create new empty textfile
2. Press a character key
3. Move the mouse several times in a slow/normal speed from edge to edge (while the key is still pressed)

Expected results: Character is written to text file endlessly and mouse cursor moves over the screen.

Real result: Mouse and Screen freezes until the key press is released.

The mouse move only hastens the thing, it also happens without mouse but than it takes way longer. I normally manage to get two freezes before the character hits the border, sometimes only one.

If you need additional information , I'm glad to help as good as I can.

Bye, Karsten

[Technologov]

Updated to VBox 3.1.0

I am able to reproduce it here, according to your steps.

Host1: RHEL 5.3/x64, Core 2 P8600, VBox 3.1.0. (reproducible here)

Host2: Windows 7, x64, Core 2 Q6600, VBox 3.1.0. (non-reproducible here)

Guest: Windows XP.

It happens both with UP and SMP VM. (ACPI, ACPI SMP and even Standard PC HALs in XP)

Strangely enough, it does not happen on Windows Hosts !

-Technologov

[Technologov]

VBox log on RHEL 5 host.

[Frank Mehnert]

Confirmed using a Windows XP guest and on a Debian / Lenny host. Most probably a bug in the PS/2 mouse/keyboard emulation.