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Ticket Resolution Summary Owner Reporter
#6246 duplicate XP guest freezing for two to three seconds at a time Dave
Description

After installing VirtualBox 3.1.4 I have started to experience freezing of my XP guest for durations of one to two seconds at a time. The freezing most often occurs when quickly manipulating directories/files in Window's explorer. It also happens on regular occasion when quickly responding to system dialog boxes. The problem does not occur when I am working within an application so long as I don't bring up a system dialog box.

Example 1: If I open "MY Computer" and click on the "My Documents" link, the system will pause for a two or so seconds and then open the folder. If I then quickly move my mouse over the back button it will take a couple seconds before the back button changes appearance to indicate that my mouse is over-top the control. If I click before getting this visual feedback the system will ignore my mouse input.

Example 2: If I open Wordpad, type some text, and then close the application the system will bring up a dialog box asking me if I want to save changes to the document. If I quickly attempt to press NO the guest will freeze for a second or two and then the application will exit. If I allow the dialog box to remain on the screen for a few seconds before I click, the application will exit immediately as desired.

This freezing bug is definitely being caused by version VirtualBox 3.1.4. If I re-install 3.1.2 the problem goes away entirely and the system is very responsive to user input.

I have tried disabling Guest additions, disabling VT-x, disconnecting the Network, etc. None of these changes seem to have any effect on the freezing issue.

FYI: My host is running Fedora 12 64 bit on an Core i7 processor. The output of uname -r is :2.6.31.12-174.2.19.fc12.x86_64

#8429 fixed Windows XP Guest suddenly resets after starting Altium Designer => Fixed in 4.0.6 Dave
Description

This bug may be the same as #8191. I am reporting it as new as it occurring in VirtualBox 4.0.4 rather than 4.0.2.

When I start Altium Designer, the Windows XP Guest resets itself and reboots spontaneously. This is a new problem that started when I upgraded to VirtualBox 4.0.4. I have not tested previous Version 4 releases. Altium Designer has been working properly in the 3.2.X versions.

I have done the following tests: Please note that each test was done independently.

1) Disable 2D acceleration.
Result -> Guest still resets/reboots spontaneously.

2) Disable the Preview Window
Result -> Guest still resets/reboots spontaneously.

3) Change the Windows XP display properties from 32bit to 24bit
Result -> Guest works OK -- NO REBOOTS

4) Change the windows XP display properties/advanced/Hardware Acceleration to NONE
Result -> Guest works OK -- NO REBOOTS

When the guest reboots after one of these events, I get a dialog box from Windows XP indicating "The system has recovered from a serious error" and a minidump is created. I have attached a zip file of the minidump along with the usual VirtualBox log file.

#10203 obsolete Cursor disappears in Altium Designer 10 in the CAMtastic window Dave
Description

There is a bug in the Windows Guest addition driver that causes Altium's CAMtastic cross-hair cursor to disappear when it is moved into the black workspace of the CAMtastic window. I can make it work properly with the following workarounds.

Here are the details:

  1. If I disable mouse integration everything works fine (the cursor doesn't disappear)
  2. If right click on the desktop and set the Hardware acceleration slider to one step below full in the Troubleshoot tab of the display properties dialog I get the proper cursor operation even with Virtualbox's mouse integration active.

I think this may have something to do with an exclusive-or operation that is not working properly in the driver. I attempted to take a screen-capture of the CAMtastic window with the cursor failing and have had no success. The cursor is invisible in my screen-capture. What is really odd is if I do one of the aforementioned steps to get around the cursor bug, I can now capture the cursor with the KDE screen-capture tool. I have attached an image of the *WORKING* cursor. When it is failing the white part of the cross-hair entering the black workspace is missing (it is black like the background).

Again, this is by no means a showstopper now that I have found these workarounds. I am reporting it as the issue may turn out to be more serious in other situations.

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