virtualbox.org

Hi.
I am on Kubuntu 18.04, and until yesterday using vbox 5.2.??? Latest updated version. One of my vm's refused to upgrade and upon further research I needed to upgrade to vbox version 6.1
I did so. I have completed this twice. First I removed vbox,

apt remove virtualbox virtaulbox-*

then installed via cmd

apt install virtualbox-6.1

All of my VM's Crashed with usb errors. After disable, run, reinstall extension pack, windowsXP works fine.
All linux VM's keep aborting, and if they do actual manage to run, I do not have a menu taskbar. The screen is trashed as in I have windows extending outside of the actual desktop window.
I have attempted to reinstall extension packs, but to no avail. I am attempting to reinstall the actual linux VM with a 'fresh copy'
Any help will be appreciated.
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Cant add screen grabs
thanks
Fred

The incomplete log provided shows that no extension pack is installed. And since the extension pack provides USB2/USB3 support, naturally all VMs will fail if they are configured to use USB2 or USB3.

Also please don't say "crash with a USB error". A crash is an unexpected/unintended abort, say caused by an illegal instruction. An error message reporting a bad configuration is not a crash - it is very much the intended outcome.

So. After much attempting random stuff, I finally managed to get one of my linux VM's running correctly. I had to install the lxqt desktop.
I think the original problems occurred when I removed all the 'virtualbox' stuff as in , then purged, then autoremove

I am still having two issues with the linux VM's.
Issue 1 is this new error message during boot Second issue, is something to do with graphics. All my VM's were created under virtualbox V5, and used the default graphics controller of vboxVGA
When I look into the settings tab, I have that little icon claiming I have Invalid settings detected. It only disappears when I select 'VMSVGA'
Is this a new thing, or is something actually wrong ?

Sorry about the crashed usb. It did occur, and I did, well I thought I fixed it, by installing the newer or correct version of extension pack. It was after this installation that problems started to occur.

And yes.
I frequently get the VM's failing to boot/load. They end with the VM closed and "aborted" in the VM list.
Thanks
Fred

The two "error messages" are common in Linux guests, I get them too, and the guest boots fine. The messages come from the guest OS itself, not Virtualbox.

3D acceleration with the VboxVGA virtual video card had a security hole big enough to launch a SpaceX rocket through, so the devs made two new video cards in 6.0.x for free Virtualbox beta-testers (us): VboxSVGA for Windows guests, and VMSVGA for Linux guests. 6.0.x had a warning that 3D & VboxVGA would be removed in 6.1.x, and a suggestion to try the new cards. 6.1.x carried out the removal of 3D from VboxVGA.

VboxVGA is still available in 6.1.x, but no 3D acceleraion is available for this card. VboxSVGA has 3D acceleration for Windows 7 guests & later. VMSVGA also has 3D acceleration: I don't know if there is an old-Linux-version limit like Windows has.