VMware Tools doesn't support Unity if either: a) the guest window manager is Compiz, or b) the guest desktop environment is Ubuntu's Unity.
If neither condition is met, you can enter Unity without trouble.
Well I've tryed with the Unity2D desktop while having 3D acceleration disabled, it's running metacity without compiz or the default Ubuntu Unity (there's still a unity-2d-shell running) and I still have the same error message,
Does that mean both the regular Ubuntu Unity and Ubuntu Unity2D break VMwareTools Unity mode, so I can't have it working out of the box with a fresh install ? And is it going to stay that way for upcoming Workstation 9? (I already see some of your google ads announcing it since I'm running Windows8, can't wait)
“Does that mean both the regular Ubuntu Unity and Ubuntu Unity2D break VMwareTools Unity mode?" —— I guess so. I didn't try Ubuntu's Unity2D before, but I'm sure that gnome desktop works well in VMware Unity Mode in Ubuntu 12.04 guest.
Well I just installed gnome3 manualy from the PPA and now Unity mode is working.
So none of the two WM installed by default with Ubuntu 12.04 are Vmware Unity compatible, good to know for later cases .
Thanks for your answers, and looking forward to the finished product.
I'm glad to know the good news.
I had VMware Unity under Windows 7 x64 working fine with WMware Workstation 8, and Ubuntu Unity 2D shell. Now, after upgrading to Workstation 9, it fails as per the original post. It does work under Gnome, but I really prefer Ubuntu Unity shell when working outside of WMware Unity. Could this be fixed, please? Why Workstation 8 could do this, and 9 can't?
Also this double meaning of the "Unity" word is pretty confusing, but I guess it's too late to change it to something else either in Ubuntu or WMware...