Restore snapshot has wrong screen size

[xerces8foo]

VB: 6.0.4
Host: Windows 8.1 64 bit 16GB RAM
Guest: Windows 2012R2 64 bit, 8GB RAM
Guest Additions: installed

What I did was:
- start the VM, log into guest Windows
- take a snapshot
- use the VM for a while
- Power off, with"Restore last snapshot"
- start VM again

Result:
- VM starts but has screen size reset to 640x480

This happens every time with this VM, even with newer snapshots.

[mpack]

Known problem, already discussed in the "Discuss the 6.0.4 release" topic. Try installing the latest test build of the Guest Additions.

[xerces8foo]

I still see this (another host, another guest).

VB: 6.1.38
Host: Windows 10 Pro 21H2 64 bit, 32 GB RAM
Guest: Windows 10 Pro 21H2 64 bit, 8 GB RAM
Guest Additions: installed, version 6.1.38

If I start the VM to a snapshot that was taken while it was running, then the following happens:
- during loading it shows the VM screen (gray snapshot) in correct size
- then it makes the VM window very small (see screenshot)
- then it makes it 640x480

Screenshot of all 3 steps attached. Or not, I get this error: Sorry, the board attachment quota has been reached.
I will put them up later if/when the board recovers...

[scottgus1]

The forum is having trouble uploading things for now. You can zip the screenshots then post the zip file on a file-sharing site with "everyone can read" permissions. (Please don't use a picture sharing site.)

[xerces8foo]

I put them here: https://we.tl/t-x62ICgTndr

[xerces8foo]

Looks like this issue in the tracker: https://www.virtualbox.org/ticket/2942 "Save state -> Start/resume does not restore window size"

[scottgus1]

I'm sorry, Xerces, looks like we missed the post of the screenshots link and it has expired. The bugtracker ticket looks similar to what you're reporting but is very old. Can you please try using Upload Attachment again? It's working now. Also, please zip and upload the VM's .vbox file, after this behavior has occurred.

[xerces8foo]

the images attached

(the size limits are very...limiting)

[xerces8foo]

Also, please zip and upload the VM's .vbox file, after this behavior has occurred.

attached

[fth0]

While the VM is not running, try removing the guest size hints with

Code: Select all

cd "C:\Program Files\Oracle\VirtualBox"
VBoxManage setextradata "Win10 test" "GUI/LastGuestSizeHint" ""
VBoxManage setextradata "Win10 test" "GUI/LastGuestSizeHint1" ""

[xerces8foo]

Did that, started the VM again, no change, behaves as before: big window, very small window, then middle size window

[fth0]

Yet another idea: There is an undocumented setting that may or may not help:

Code: Select all

cd "C:\Program Files\Oracle\VirtualBox"
VBoxManage setextradata "Win10 test" "GUI/AutomountGuestScreens" "1"

Please provide a (zipped) VBox.log file from a VM run with this setting. To undo the setting:

Code: Select all

cd "C:\Program Files\Oracle\VirtualBox"
VBoxManage setextradata "Win10 test" "GUI/AutomountGuestScreens" ""

Edit:
Corrected the undo setting command for posterity.

[xerces8foo]

Are you sure the undo command is the same as the first one?

[scottgus1]

The undo command probably should be either:

VBoxManage setextradata "Win10 test" "GUI/AutomountGuestScreens"

or

VBoxManage setextradata "Win10 test" "GUI/AutomountGuestScreens" ""

[fth0]

Are you sure the undo command is the same as the first one?

Of course not. Thanks for asking!