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[Resolved] WinXP guest stuck on 640x480x4-bit color
Posted: 30. Apr 2019, 19:59
by studanser
VirtualBox 6.0
Host: Windows 10 64-bit
Guest: Windows XP 32-bit
I was just using VirtualBox with an XP VM. The video was working find and then I clicked to move the guest window. I might have clicked on the edge to resize the window. In any case, the window did a redraw, suddenly resized and is now stuck at 640x480 4-bit.
I can choose 32-bit color but when I click Apply, it redraws and goes back to 4-bit, 640x480.
Nothing has changed in the VirtualBox Display settings that I can see. This is very frustrating.
Re: WinXP guest stuck on 640x480x4-bit color
Posted: 30. Apr 2019, 21:31
by socratis
I split your post from the "
XP: Stuck on 4-bit color and choppy performance". Don't you think that a thread
last updated on 2009-10-25 is dead enough? Let the zombies retire...
I need to see a
complete VBox.log, from a
complete VM run, where the problem occurs:
- Start the VM from cold-boot (not from a paused or saved state) / Observe problem / Shutdown the VM (force close it if you have to).
- With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
- Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.
I would also like to see the "recipe" of the VM, the ".vbox" file:
- Right-click on the VM in the VirtualBox Manager. Select "Show in Finder/Explorer/Whatever".
- ZIP the selected ".vbox" file and attach it to your response.

Re: WinXP guest stuck on 640x480x4-bit color
Posted: 21. May 2019, 18:30
by studanser
Yes, that makes sense not to reply to such an old thread. It is good to know not to do that. Thanks for moving my post.
Procedure:
Started VM from cold boot. Observed problem of 4-bit 640x480 resolution. Attempted to change to 32-bit 800x600. Accepted changes, however, video did not actually change and reverted back to 4-bit 640x480. Shut down VM (clean).
I have zipped the .log and .vbox files together.
Re: WinXP guest stuck on 640x480x4-bit color
Posted: 22. May 2019, 02:52
by socratis
<ExtraDataItem name="GUI/LastGuestSizeHint" value="917,646"/>
The last size hint shows a different size than the "I think I may have resized it by accident". That's not close to an accident, that was close to a proper window resizing, no?
00:00:02.703852 File system of 'D:\XP.vhd' is ntfs
00:00:02.704501 File system of 'D:\XP_Storage.vhd' is ntfs
That's two VHDs that you have attached there, not the default VDIs...
00:00:02.855261 VMSVGAEnabled <integer> = 0x0000000000000001 (1)
You have selected the VBoxSVGA as your GPU which is only available after VirtualBox 6.0.0...
00:00:07.464920 VMMDev: Guest Additions information report: Version 5.2.6 r120293 '5.2.6'
And I see that this VM has the older 5.2.6 Guest Additions (GAs) from 2018...
Based on the three points above, I would like to know how this VM came to exist:
- It uses the non-default VHD.
- It has the 6.0.x available GPU.
- But it has the 5.2.6 GAs installed.
So, can you explain the origins and the life of this VM?
Re: WinXP guest stuck on 640x480x4-bit color
Posted: 22. May 2019, 08:02
by studanser
socratis wrote:
00:00:07.464920 VMMDev: Guest Additions information report: Version 5.2.6 r120293 '5.2.6'
And I see that this VM has the older 5.2.6 Guest Additions (GAs) from 2018...
Based on the three points above, I would like to know how this VM came to exist:
- It uses the non-default VHD.
- It has the 6.0.x available GPU.
- But it has the 5.2.6 GAs installed.
So, can you explain the origins and the life of this VM?
- I chose to use VHD when I created the VM. I believe my thought at the time was that VHD might be useful if I wanted to attach the image to the Windows host. It seemed more portable.
- I am using 6.0.0 r127566. I didn't create the VM in another version - it was created in this installation. I don't have an answer for that except that it seems to be available in this particular build.
As for the guest utils... hmm, I thought I just chose the "Insert Guest Additions CD Image" from the Devices menu. If there's an unusually old version installed, then I wonder if that might be affecting things. It sounds like I should try upgrading.
Re: WinXP guest stuck on 640x480x4-bit color
Posted: 22. May 2019, 08:32
by studanser
Upgrading to Virtualbox 6.0.8 seems to have fixed the issue. I also installed the 6.0.8 guest utils (via the Device menu).
Thanks for your help, socratis.
Re: WinXP guest stuck on 640x480x4-bit color
Posted: 22. May 2019, 10:59
by socratis
Glad you got it going. Marking as [Resolved].
Re: [Resolved] WinXP guest stuck on 640x480x4-bit color
Posted: 21. Aug 2019, 23:17
by altronrain
Have same problem.
Host: Windows 10 x64
Guest: Windows XP SP 32bit
Virtualbox version 6.0.10 + same Extpack +same GA
Video driver: VboxSVGA (also checked VboxVGA)
Problem: After installation Win XP works fine, i can change some graphics modes.
After GA install and reboot guest system stuck at 4-bit 640x480 mode. Helps only additions delete.
As a reference. Also have Centos machine (host) with 6.0.8 Virtualbox+EP+GA
Same Windows XP SP3 32bit (created + installed)
Works fine after GA install
Re: [Resolved] WinXP guest stuck on 640x480x4-bit color
Posted: 22. Aug 2019, 07:39
by socratis
altronrain,
Since you didn't include any logs, my hunch tells me that your GPU drivers are being rejected due to hardening errors. We need to see a
ZIPPED VBoxHardening.log for the VM, after a complete run, see below.
We also need to see a
complete VBox.log, from a
complete VM run, where the problem occurs:
- Start the VM from cold-boot (not from a paused or saved state) / Observe problem / Shutdown the VM (force close it if you have to).
- With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
- Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

Re: [Resolved] WinXP guest stuck on 640x480x4-bit color
Posted: 23. Aug 2019, 15:08
by altronrain
Oh, sorry
Solved my problem completely deleting this VM.
Then I made clean VM with VboxVGA and installed guest OS + GA. Interesting, but this time all function well
Re: [Resolved] WinXP guest stuck on 640x480x4-bit color
Posted: 23. Aug 2019, 17:49
by socratis
Good to know. I can only leave this thread as [Resolved], since it wasn't your own thread to begin with...