virtualbox.org

Hi. Randomly the mouse cursor jumps to the top left corner of my guest screen rather frequently. At least one time every 2 minutes, but usually more like once every 45 seconds. This causes me to accidentally exit out of windows all the time, and therefore makes VirtualBox entirely unusable for me at this point.

I have tried this on both a Windows 7 RC as well as Ubuntu 9.04 guests with the same results.

My hardware:
Mobo: Gigabyte GA-P35-DQ6 Rev 1.1 Bios F6
CPU: Intel Core 2 Quad Q6600 2.4 ghz
RAM: 4gb running at 667mhz dual channel interleaved
GFX: evga nvidia 9500 gt 512 mb DVI / DVI
HDD: 2 320gb sata 7200 rpm, 1 200gb IDE 7200 rpm
DVD: IDE LITE-ON

My VirtualBox version: 3.0.2 r49928

I googled for this issue and found it registered as issue #644 and solved. Reading the doc suggested that I simply disable VT-x. I tried having this both disabled and enabled in both Win7 and Linux and the problem remained.

Any ideas anyone?

Also another random question...under "Number of processors" in the system tab, should I have 1 selected or 4 selected since I am running a Quad-Core? Does this mean number of cores or number of actual CPU's?


Thanks!
Jim.

I suppose you have installed the guest additions. This causes some people problems even though it is not supposed to.
Also make sure that you have not setup a USB filter for the mouse. It causes all kinds of problems as well as the keyboard if you set a filter for it.
You can select up to the number of processors/cores you have. So if it is quad core you can have 4, dual core 2.

Perryg wrote:I suppose you have installed the guest additions. This causes some people problems even though it is not supposed to.
Also make sure that you have not setup a USB filter for the mouse. It causes all kinds of problems as well as the keyboard if you set a filter for it.
You can select up to the number of processors/cores you have. So if it is quad core you can have 4, dual core 2.

Hey thanks a lot. Will it actually help if I set it to 4?

As for the mouse issues..I do not have a USB filter set up, and I do not have guest additions installed. And it is a USB mouse though if that means anything.


Thanks again,
Jim.

I got fed up with mouse issues and switched mine to a PS2 port. I do not have mouse problems at all now, not even the scroll wheel.
If you can support more processors it will improve the performance. But you need to see if it does for you or not.

Perryg wrote:I got fed up with mouse issues and switched mine to a PS2 port. I do not have mouse problems at all now, not even the scroll wheel.
If you can support more processors it will improve the performance. But you need to see if it does for you or not.

Ok thanks I will try that right now for the processors.

The only problem is that I don't have a PS/2 mouse :S

Perryg wrote:I got fed up with mouse issues and switched mine to a PS2 port.

How did you get a PS2 mouse working on a Mac?

Well I am not the all knowing about MACs, but my friend was having this problem with his Apple MacBook Pro Notebook. and he had a PS2 port. Moving the external mouse to the PS2 port fixed his problem.

Installing guest additions seemed to fix this problem entirely for me.

I have Mouse jumping around too.
HostOS is winxp. GuestOS is winxp or linux.
Installing guest addition seems to solve the problem most of the time.

My lastest try was last night:
virtual box 3.0.10
GuestOS is tinycore linux. (boot from livecd, therefore no guest addition)
I am rdp into my desktop to use the winxp hostos. So I don't know what kind of mouse is that. (rdp mouse?? )
The mouse cursor just lost control most of the time, especially when i move the cursor fast.
(again I do NOT have guest addition installed.) When I am moving the cursor, sometimes it moves and jump to a new location (wormhole theory !!), sometimes it stops at a invisible boundary/wall.

i have this problem in VirtualBox 3.0.04, 3.0.06, 3.0.08.....

just my humble user experience.....

Hi...

I see this topic is rather old (2009?), but it describes my situation well.

My HostOS is MacOSX, 10.6.8, 64GB ram, 4TB disk.
My GuestOS is Fedora17 x86_64 (KDE), 8 CPUs, 8GB ram, Guest Additions installed.
I'm using VirtualBox 4.1.20 r80170, with USB extension pack.

Everything works fine, except the mouse:

- If I grab a window and slide it around (in a big circle, for example), it will drag correctly, except for moments where the mouse and the window jump to the top-left corner for a second, and then jump back to where they belong on the path I was dragging them on.
- If I try to highlight text, sometimes it will work, but other times the mouse will again jump to the top-left corner, resulting in the highlighting of everything from the initial click-point to the top of the document, with accompanied scrolling to the top of the document.
- I've turned on the Mandelbrot set desktop background, which lets you pan (click-and-drag) and zoom (scroll wheel) the desktop (the root window), and sometimes when I'm using the scroll wheel inside a window, the mouse will jump to 0,0 and start sending scroll wheel events to the desktop. I have to click inside the window I'm working with to get scrolling to happen inside it again.
- Earlier I tried this with Fedora17 x86_64 (the default Gnome desktop), and the top-left corner is a 'hot-corner', which caused the main menu to pop up randomly. I turned off the hot-corner and the menu stopped popping up.
- I've tried this with mouse integration turned on and turned off, with no effect.

So, from my (limited) point of view, it appears that the mouse driver is intermittently telling the guest OS that the mouse is at (0,0) and then at the next data point it's giving the correct coordinates again.

This is irritating, and the only work-around right now is to drag or highlight carefully, if at all.

Please try and fix this quickly; I'm *this close* to having a really sweet Fedora17 setup, and the mouse is the only fly in the ointment.

I am having the same issue as described above. This is also with a guest running Fedora 17 x86_64 KDE, using VirtualBox 4.2.0 RC3, with guest additions installed. The mouse jumping to 0,0 is driving me crazy, and seems to happen more when the left mouse button is held down.

The host in my case is Windows 7 64 Enterprise, 8GB, 4 core.

The problem happens both when I use my synaptics touchpad or my mouse, and happens as well when my touchpad is disabled.

Given the above guest OS is the same as mine, I am somewhat suspicious that the issue may not be host related.

The problem has been confirmed as being an issue in the version of the x11 server in Fedora 17. Resolution is as follows (copied from fedora forums, sorry, I can't post links yet)

"Problem resolved by downgrading the xorg-x11-servers (xorg-x11-server-common xorg-x11-server-Xorg xorg-x11-server-Xephyr) from 1.12.3-1.fc17 to 1.12.0-2.fc17."

Edit: http://ask.fedoraproject.org/question/2 ... r-software