[WorksForMe] Ubuntu not working

[Wingo]

Good evening.
I am forced to ask for help since my virtual machine is not doing what it's supposed to do anymore.
Basically, I started ubuntu (16.04 LTS) as always, and it always got me the "fatal error" guru thing.
So I did like last time (yes it already happened once), I uninstalled the machine (didn't really have any important file) and reinstalled, and everything worked fine.
This time, tho, it just stayed on the black screen with the little line ticking.
Since the update message popped on I decided to update to 5.2.8, but that didn't fix anything.
So, anybody knows how to solve this little issue?
Also, let me know if you can help me improve the virtual machine performances since it was kinda slow (i need to code with c for the university, it's not like I need it to go perfectly but it would be better).
I don't know if it is useful information but I am using an HP Spectre X360 with 8th gen i7 intel core. If there is any need for more specs i'll just comment them.
Thanks for any help in advance

[socratis]

We're going to need to see a VM log from a complete VM run:

• Start the VM from cold-boot (not from a paused or saved state) / Observe error / Shutdown the VM (force close it if you have to).
• With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
• Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

[Wingo]

here you go

[andyp73]

Hmmm, I see nothing in the log file that suggests a guru meditation having taken place.

00:00:05.123861 HM: HMR3Init: Falling back to raw-mode: VT-x is disabled in the BIOS for all CPU modes

You are running Windows 10 Version 1709 so as well as checking that VT-x is enabled in the system BIOS make sure that Hyper-V hasn't got hold of it. With this version of Windows 10 just unchecking it in Windows Features isn't enough there are some commands you also need to run.

-Andy.

[sleewok]

I just updated to 5.2.8 as well. Ubuntu boots fine and I am able to login. However, after a few minutes the screen goes black. I am able to switch into the console so there is something going on with the video. I did not have this issue with the previous test build.

[ChipMcK]

check out Re: 5.2.6. to 5.2.8, after the upgrade, the host boots, but does not react to any mouse or kb inputs

[Wingo]

Hmmm, I see nothing in the log file that suggests a guru meditation having taken place.

00:00:05.123861 HM: HMR3Init: Falling back to raw-mode: VT-x is disabled in the BIOS for all CPU modes

You are running Windows 10 Version 1709 so as well as checking that VT-x is enabled in the system BIOS make sure that Hyper-V hasn't got hold of it. With this version of Windows 10 just unchecking it in Windows Features isn't enough there are some commands you also need to run.

-Andy.

it seems weird because I already used VirtualBox for almost two months and didn't really have any problem, neither I had to do anything with the bios whatsoever. anyways I guess the logs do not show any guru message because after the update and all the screen just stays black.

[Wingo]

Ok guys I seriously don't know what happened, but everything is working fine now. actually, even better than before!! ubuntu know is super smooth and reactive, I cant figure out what happened I swear!!! thanks for all the help I guess

[socratis]

Glad you got it going. Marking as [WorksForMe].