mpack wrote:Your question concerns the guest OS, not the host - unless you are saying that the host has the black screen?
So the actual subject matter is: black screen on RedHat guest. I'll move the topic to "Linux Guests".
Unfortunately the log is truncated before it says anything interesting (*), except: 64MB is not enough graphics RAM when you enable 3D acceleration. You have plenty of RAM, so I would max out this parameter.
Likewise I'd give 2 CPU cores to the guest.
(*) do not capture logs while the VM is still running and the log file is therefore still being written to.
Then, if the problem continues, please provide a complete zipped log.
Thank you mpack,
I have tried with blow settings:
1. Centos 7.9, Centos 8.4 and Ubuntu 20.04 ISO image
2. enable or disable EFI boot
3. enable or disable 3D acceleration
4. enable or disable nested virtualization
5. with 4 Core, 8192MB RAM and 128mb graphics RAM
All I got is a black preview screen(even the virtualbox logo didn't show) and lines in log:
Code: Select all
ERROR [COM]: aRC=VBOX_E_VM_ERROR (0x80bb0003) aIID={4680b2de-8690-11e9-b83d-5719e53cf1de} aComponent={DisplayWrap} aText={Could not take a screenshot (VERR_NOT_SUPPORTED)}, preserve=false aResultDetail=-37
IMO, this is due to some misconfigure of my guest settings or host environment.
I started the VM for about 4min and shutted it down.This is the whole