Broken cross-compatibility between the VBox and Additions in 6.1.45 r157688 and 7.0.9 r157689

[boxer01]

The Issue: in or after forementioned versions, one couldn't run the VM in one version of VBox with Guest Additions from another VBox version (so no chance to run VM in VBox 7 with Additions from VBox 6.1 and vice verse).

This makes updating / changing version more difficult. Previously, one could just start the 6.1 VM with 6.1 Additions in VBox 7 and then just update the Additions. But now we have a black screen in this case. And the exception, if one try to run 7.0 VM with 7.0 Additions in VBox 6.1 to downgrade. The exception is:

GIM: HyperV: Guest indicates a fatal condition! P0=0x3b P1=0xc0000005 P2=0xfffff80530ce6a0a P3=0xffff810d5ae1a780 P4=0x0

.

Therefore, one have to go to the safe mode to update the Additions, which is more steps than we have before in such case.

I think we had such issues in the first Betas of 7.0, see the ​forum. As usual, I put my logs here, for both versions.

[boxer01]

Logs from VBox 6.1 and 7.0

[boxer01]

Do we need the same ticket with 6.1.44 version?

[boxer01]

Good news, partly. With the current 1577xx / 1578xx test builds, I get at least backward compatibility with 7.x additions under VBox 6.1.45. I still have these problems with 6.1.45 additions under VBox 7.0.9, so I have to cause the safe mode. Otherwise, the screen is dark, and I can't update the additions in both current 7.x versions (7.0.9 and 7.0.97)

BTW, the all links to the test build are ​gone

[boxer01]

Still here in 7.0.9-158223 and 6.1.45-158243.

The backward compatibility is here, I still can use 7.0 guest additions under the VBox 6.1.45. But if I try to downgrade the guest additions from 7.0.9 to 6.1.45 version - I still get the exception and VM reboot. It is a different exception now, but still this is troubling.

In case of 6.1 guest additions under VBox 7, there is still a black screen, so I have to cause the safe mode with crashing the VM.

I put my current logs for both versions.

[boxer01]

Log with crash on guest additions downgrade from 7.0.9-158223 to 6.1.45-158243

[boxer01]

Log with black screen in 7.0.9-158223

[boxer01]

Current versions (6.1.47-158685 and 7.0.11-158681). Downgrading Guest Additions from 7 to 6.1 in VBox 6.1 - reboot before the end of the process. Then everything works OK.

Starting the VM with Guest Additions 6.1 in VBox 7, can't resize the screen to full-screen. Only have 800x600 before installing Guest Additions from 7.0.

Afterward, everything was OK.

[boxer01]

Logs from 6.1.47-158685 and 7.0.11-158681

[boxer01]

Still here in 7.0.11-158811 and 6.1.47-158777. The backward compatibility is here, I still can use 7.0 guest additions under the VBox 6.1.

When downgrading to 6.1 - still restart before the end of installation. Then everything is OK. Starting VBox 7.0 with 6.1 additions - the black screen is here, as at the very beginning. After safe mode installation - reboot after the first restart after installation.

[boxer01]

Fresh logs from new versions

[boxer01]

Still here in 7.0.11-159210 and 6.1.47-159049.

[boxer01]

Still here in 7.0.11-159359.

[boxer01]

Still here in 7.0.11-159409.

[boxer01]

Still here in 7.0.12-159484 and 6.1.48-159471.

[Dmitrii Grigorev]

Hello Boxer. Thank you for the report.

I've tried to reproduce the issue using the following steps:

1. Start Windows 10 VM without GA using VBox 7.0.12, the VM was created with VBox 7.0.10.
2. Install 6.1.48 GA into the VM
3. Install 7.0.12 GA into the VM (over 6.1.48 GA)
4. Install 6.1.48 GA into the VM (over 7.0.12 GA)

All the four steps cause no problems.

The two differences could matter here:

1. I've created the VM using VBox 7.0.10
2. The "3D acceleration" is disabled in the VM

Could you provide more detailed steps to reproduce the issue?

With best regards, Dmitrii

[boxer01]

You forgot to change the VBox version, too. So here is my step-by-step explanation:

1. Install VBox 7.0.12 and create or load a VM; install GA 7.0.12 in it.
2. Remove VBox 7.0.12 and install 6.1.48 instead; load the same VM; downgrade the 7.0.12 GAs to the 6.1.48 GAs → at the end of the process, you have a direct VM reboot instead of the dialog asking for a reboot; but the GAs are properly installed. This direct reboot could be eliminated?
3. Now remove the VBox 6.1.48 and install the VBox 7.0.12 once again; load the same VM and see that there is a black screen; provoke the safe mode by resting the VM at least two times; from the safe mode, one can upgrade the GAs from 6.1.48 to 7.0.12 → the black screen and the need for a safe mode could be eliminated?

One can also do the 6.1.48 VBox part first and the 7.0.12 part second. This would change the sequence, but the results would remain the same.

[boxer01]

Still here in 7.0.13-159587 and 6.1.49-159590.

[boxer01]

Still here in 7.0.13-159676 and 6.1.49-159643.

[boxer01]

Still here in 7.0.13-160152 and 6.1.49-160139.

[boxer01]

Still here in 7.0.97-160458 and 6.1.49-160457.

[boxer01]

Happy New Year, everybody! ;-)

This is still an issue for versions 7.0.13-160845, 7.0.13-161031, 7.0.97-160850, 7.0.97-161032 and 6.1.49-160545 or 6.1.49-161009.

[boxer01]

Still here in 7.0.14-161095 and 6.1.50-161033.

[boxer01]

Still here in 7.0.15-161311 and 6.1.51-161130.

[boxer01]

Could be closed because 6.1.x is out of support.