Virtualbox Vm machine does dot start

[Michael Widmann]

i configured a sles 11SP 3 server (64Bit) with Virtualbox 4.3.20 and the vbox addition and all patches. I can install virtualbox, but i could not start any virtual machine (same Machines will run under Windows as host system). The hardware configuration is: AMD 6344 Opteron with IOMMU enabled and Virtualisation enabled. The vbox.log shows this entry:

00:00:00.614300 ERROR [COM]: aRC=VBOX_E_IPRT_ERROR (0x80bb0005) aIID={480b372c-c0b5-4c23-9bd7-dcbb85b1594c} aComponent={Display} aText={Could not take a screenshot (VERR_NOT_SUPPORTED)}, preserve=false.

if i disable hardware virtualisation in virtualbox, it works. But that entry limits the guest os to 32bit systems. SLES 11SP3 recognizes the virtualisation flag (cat/prog/cpuinfo),. i don´t know, we it runs on another server with the same installation and the same hardware...and with virtualisation enabled

[Michael Widmann]

vbox. log