Unsupported version of data unit

[caughran]

I am trying to reestablish my virtualbox on linux Mint, after some absence. (Tax time is coming.) When I try to start Windows 7 on vb 5.2.34_Ubuntu r133883 , which used to run well, it comes to a screeching halt, with the message

Failed to open a session for the virtual machine Win7.

Unsupported version 6 of data unit 'HWACCM' (instance #0, pass 0xffffffff) (VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Naively, one could conjecture that in version 5.etc., a build slipped in something from version 6.

The log: a whole lot of characters, then

Code: Select all

00:00:01.195210 Changing the VM state from 'CREATING' to 'CREATED'
00:00:01.222289 SharedFolders host service: Adding host mapping
00:00:01.222300     Host path '/back', map name 'back', writable, automount=true, create_symlinks=false, missing=false
00:00:01.228006 SharedFolders host service: Adding host mapping
00:00:01.228015     Host path '/home/jim', map name 'jim', writable, automount=true, create_symlinks=false, missing=false
00:00:01.235976 Changing the VM state from 'CREATED' to 'LOADING'
00:00:01.236297 SSM: File header: Format 2.0, VirtualBox Version 6.0.6 r129722, 64-bit host, cbGCPhys=8, cbGCPtr=8
00:00:01.238175 VUSB: Detached 'HidMouse' from port 1 on RootHub#1
00:00:01.238279 SSM: Saved state info:
00:00:01.238284 SSM:   Build Type: release
00:00:01.238288 SSM:   Host OS: linux.amd64
00:00:01.238291 SSM:   OSE: true
00:00:01.238299 SSM: LoadExec failed for 'HWACCM' instance #0 (version 6, pass 0xffffffff): VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION
00:00:01.238323 SSM: Unit at 0xcc, current position: offUnit=0x0 offUnitUser=0x0
00:00:01.238348 VMSetError: /build/virtualbox-p8NxA3/virtualbox-5.2.34-dfsg/src/VBox/VMM/VMMR3/SSM.cpp(8704) int ssmR3LoadExecV2(PVM, PSSMHANDLE); rc=VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION
00:00:01.238352 VMSetError: Unsupported version 6 of data unit 'HWACCM' (instance #0, pass 0xffffffff)
00:00:01.242851 SSM: Unit 'HWACCM' contents:
00:00:01.242860 0x00000000: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ................
00:00:01.242865 0x00000010: 00 00 00 00 00 00 00 00-                         ........
00:00:01.242868 SSM: offCur=0x18 fEndOfData=1 (rc=VINF_SUCCESS)
00:00:01.242934 Changing the VM state from 'LOADING' to 'LOAD_FAILURE'
00:00:01.242964 Changing the VM state from 'LOAD_FAILURE' to 'POWERING_OFF'
00:00:01.242970 ****************** Guest state at power off for VCpu 0 *******

and a bunch more characters, and then

Code: Select all

00:00:01.257146 E1000#0 Max TX Delay        : 0
00:00:01.312581 GIM: HyperV: Resetting MMIO2 regions and MSRs
00:00:01.315130 Changing the VM state from 'DESTROYING' to 'TERMINATED'
00:00:01.318402 Console: Machine state changed to 'Saved'
00:00:01.322721 ERROR [COM]: aRC=NS_ERROR_FAILURE (0x80004005) aIID={872da645-4a9b-1727-bee2-5585105b9eed} aComponent={ConsoleWrap} aText={Unsupported version 6 of data unit 'HWACCM' (instance #0, pass 0xffffffff) (VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION)}, preserve=false aResultDetail=0
00:00:01.322824 Power up failed (vrc=VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION, rc=NS_ERROR_FAILURE (0X80004005))
00:00:01.824489 GUI: UIMachineViewNormal::adjustGuestScreenSize: Adjust guest-screen size if necessary.
00:00:01.824511 GUI: Aborting startup due to power up progress issue detected...

I saw your cautions about the ubuntu version of vbox; it would save me some effort if you could diagnose the problem here. But if I have to change versions and run again, I can.

Thank you.

[scottgus1]

When you post a log, please zip and post the guest's complete vbox.log, using the forum's Upload Attachment tab.

The line I was looking for based on googling:

VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION site:forums.virtualbox.org

is not in the log segments you posted.

Code: Select all

00:00:01.238279 SSM: Saved state info:

If this is an indication, your guest was save-stated when you last shut it off, and something has changed on the host PC enough to make the saved state no longer fit. Right-click the guest in the main Virtualbox window and choose Discard Saved State.

[caughran]

Thanks! The saved state suggestion worked wonderfully.

As for the log, I'm sorry. I thought that reducing the size of the post might make it easier to get through. But it won't, of course, if something needed is lost.