Page 1 of 1

Ubuntu VM black screen with single underscore on startup

Posted: 22. Feb 2021, 04:48
by Mathias1548
Hi, I've been using this VM (Virtualbox 6.1.18, ubuntu 64 bit) for a couple weeks now and it's been working fine. However, when i tried to start it up yesterday, the VM would just get stuck on a black screen with a single underscore.
I have tried to look through other forum posts with similar issues and have tried the following:
- Disable 3d acceleration (it wasn't on in the first place)
- Check if hyper-V is active (I couldn't find the lines "{timestamp} HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
{timestamp} NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work..." in my log so I don't think this is the issue)
but nothing has helped so far, I have attached my last log and i hope someone could assist me.

Thank you.

Re: Ubuntu VM black screen with single underscore on startup

Posted: 22. Feb 2021, 13:42
by mpack
00:00:05.834919 Host RAM: 8080MB (7.8GB) total, 1259MB available
...
00:00:06.133738 RamSize <integer> = 0x0000000080000000 (2 147 483 648, 2 048 MB)
00:00:06.134378 VRamSize <integer> = 0x0000000008000000 (134 217 728, 128 MB)
Well, you seem to have the RAM allocation side down pat. Now you only need to take care of the provision side! :twisted:

Re: Ubuntu VM black screen with single underscore on startup

Posted: 22. Feb 2021, 15:09
by Mathias1548
Ah, that makes sense. Sorry to bother with such a simple mistake.

Re: Ubuntu VM black screen with single underscore on startup

Posted: 22. Feb 2021, 17:46
by scottgus1
FWIW it seems reasonable that an 8GB host should run a 2GB VM. It's just that you had lots of other stuff running that used up the available RAM before the VM was started. Easy thing to do...