32 bit color error.

Discussions about using Linux guests in VirtualBox.

32 bit color error.

Postby Advice Pro » 25. Jul 2012, 17:29

In an Ubuntu guest, I got:

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Virtualbox - Information

The virtual machine window is optimized to work in 32 bit color
mode but the virtual display is currently set to 16 bit.
Please open the display properties dialog of the guest OS and
select a 32 bit color mode, if it is available, for best possible
performance of the virtual video subsystem.
Note. Some operating systems, like OS/2, may actually work in
32 bit mode but report it as 24 bit (16 million colors). You may try
to select a different color mode to see if this message disappears
or you can simply disable the message now if you are sure the
required color mode (32 bit) is not available in the guest OS.

I read that I can solve this by adding to xorg.conf:

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Section "Screen"
        Identifier    "Default Screen"
        Device        "VirtualBox graphics card"
        Monitor       "Generic Monitor"
        DefaultDepth  24
        SubSection "Display"
                Depth         24
                Modes         "1280x800" "1024x768" "800x600" "640x480"

Or is there a better solution?
Advice Pro
Posts: 118
Joined: 14. Aug 2011, 19:29
Primary OS: MS Windows 7
VBox Version: OSE other
Guest OSses: Lubuntu 14.04

Re: 32 bit color error.

Postby mpack » 25. Jul 2012, 18:10

The best solution is to tick the "don't show this message again" checkbox, and make sure you installed GAs into the VM.
Site Moderator
Posts: 19060
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows XP
VBox Version: PUEL
Guest OSses: Mostly XP

Re: 32 bit color error.

Postby Perryg » 25. Jul 2012, 18:27

Oh and unless you are running a very old (not supported any longer) version of Ubuntu the xorg.conf has been depricated. Making one will probably cause the guest to not work. You should be leery of using out dated information off the Internet.
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Posts: 30693
Joined: 6. Sep 2008, 22:55
Primary OS: Linux other
VBox Version: OSE self-compiled
Guest OSses: *NIX - Other

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