Hi Max Nikulin, Thank you for your suggestions. I haven't got any conclusive evidence yet to prove that Debian had already stopped running or not. All I know is just that the screen of the virtual machine went black and the virtual machine didn't response to ACPI shutdown signal. I'll try to use logs and remote connection later to find out if Debian is really stopped.
I didn't install VirtualBox guset Additions because it doesn't seem as stable and easy-to-use as on Windows guests. Best Regards Richard ------------------ Origin ------------------ FROM: "Max Nikulin" <maniku...@gmail.com>; TIME: 2024,9,27(Fri) 9:43am TO: "debian-user"<debian-user@lists.debian.org>; SUBJECT: Re: Re?? Is there any way to STD in Debian? On 26/09/2024 21:36, YOYO wrote: > The Debian 12 is running in VirtulBox 7.0.20. And I only assigned 2048 > MB RAM to it. [...] > All I can do is to fouce power-off and re-start it, just to found all running tasks gone. Have you read logs from the previous boot ("journalctl -b -1" as root)? Are you sure that Debian was not running? I would arrange port forwarding and would try to connect to VM using ssh to confirm that it is not a GUI issue. I have no idea if some stuff like virtualbox guest additions might be involved.