Windows 7 on Mac OSX Lion will only use 256 colors?

[sdjensen]

Hi,

I am experiencing a strange behavior VirtualBox on Mac OS X Lion.

For some reason I can only get my Windows 7 64-bit guest system to run with 256 colors? Have anyone else experienced this and how did you solve it?

Kind Regards,
Søren

[Perryg]

You install the guest additions (in the guest)

[sdjensen]

I have installed the guest additions - I also tried to reinstall them.

[Perryg]

Did you actually see them install? Were there any error messages?
Post the guest log file (as an attachment)

[sdjensen]

Yes, I saw them be installed - actually if I uninstall them it solves the problem, but then I can't set VirtualBox to use the full with of my screen

Where can I find the log?

[Perryg]

Click on Machine in the VirtualBox main manager then show log. Click on the save button in the lower right and (post as an attachment).
No need to send this if the guest additions are not installed though.

[sdjensen]

Well I tried to uninstall the additions - reboot - installed the additions again - reboot and now the colors are back to normal - I will post the log if this problem will return.

[repattila]

Hi All,

I have the exact same problem.

Guest additions are installed, actually it was working fine, until one time when switching from full screen back to windowed mode.

The log is attached.

Best regards,
Attila

[bradallen137]

We saw the same thing here on a new MacBook Pro with the Mac OS X 10.7.2, and VirtualBox 4.1.8 and a fresh Windows 7 install under VirtualBox.

Uninstalling the VirtualBox Guest Additions restored the normal color depth, then reinstalling the Guest Additions brought back the unwanted 256 color depth. It didn't seem to matter that plenty of RAM (2GB) and VRAM (128MB) were assigned. We tried turning on and off the 3D hardware acceleration (but left the 2D acceleration checkbox enabled).

What finally worked was simply resizing the window to force a redraw.