Black Screen/Blinking Cursor on Ubuntu Start

[bhuvi]

Hello, I have got the same issue tried doing the steps but the problem persists.
I tried increasing the video memory, changed the graphic controller to new one(didn't work), and resized th vdrive.
And I'm not able to attach the log file here, may I know how to do that. It would be grateful if you could help me as I have an work to be done urgently. Thank you.

[scottgus1]

Be sure you undo this:

changed the graphic controller to new one(didn't work),

Good troubleshooting step here, too bad it didn't help:

increasing the video memory

Ubuntu is known to go blackscreen if there is not enough free disk space to start the desktop environment. This happens in real PCs too. The solution is to log on text-only and delete stuff until the desktop environment can start. Web-search how to fix this in an Ubuntu PC and apply the steps to the VM. How to Resize a Drive can show you how to increase the Virtualbox drive file, and offer suggestions on resizing the partitions inside the VM.

resized th vdrive.

Did you do both steps?

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I'm not able to attach the log file here

Start the VM from full normal shutdown, not save-state. Run until you see the problem happen, then shut down the VM from within the VM's OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.

Right-click the VM in the main Virtualbox window's VM list, choose Show in Explorer/Finder/File Manager. In the "Logs" subfolder, zip the VM's "vbox.log", and post the zip file, using the forum's Attachments tab. (Configure your host OS to show all extensions so you can find the "vbox.log", not "vbox.log.1", etc.)

[bhuvi]

To resize the vdrive I was able to do the step one 1, to do step 2 it's not clear how to do that. And In my VM I can't see my mouse cursor.
I've attached the log file.Thank you for replying.

[scottgus1]

The log is incomplete. The VM window was not closed before the log was taken:

shut down the VM from within the VM's OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.

Following instructions is important.

The log shows normal boot of the Linux OS and Guest Additions starting. I don't see actual problems of running the Linux OS in this incomplete log.

to do step 2 it's not clear how to do that.

You'll have to exercise some reading comprehension to figure out how to solve problems. And you'll have to describe exactly what you did to try to carry out step 2, and where you're having trouble.

[bhuvi]

Sorry for the late reply. I did download the gparted file and mounted it to the vm in storage. Still the problem persists. I have attached the log taken after shutdowning the vm.

[scottgus1]

I did download the gparted file and mounted it to the vm in storage. -> (X) <- Still the problem persists.

There's more to it that simply sticking Gparted into the CD drive. What did you do during the "X"?

[bhuvi]

After mounting it, I'd restarted the vm and it open gparted ui,selected the vdrive and resized and applied the changes and the vm was rebooted. I'm new to virtualbox, so I have this doubts, do I have to do "insert the guest addition cd image". If so does the installed gparted file has to be in virtualbox folder in system.

[scottgus1]

After mounting it, I'd restarted the vm and it open gparted ui,selected the vdrive and resized and applied the changes and the vm was rebooted.

That sounds accurate to me. I'm no Gparted guru, though, so I don't know if anything else needs to be done. If you reboot into Gparted, does the extra space show as part of the OS's usable partitions?

does the installed gparted file has to be in virtualbox folder in system.

Once you get the disk and paritions resized, you don't need to keep Gparted in the VM's CD drive anymore.

do I have to do "insert the guest addition cd image".

No. Guest Additions are already installed, if I read the log correctly.

Once you confirm that Gparted shows a larger partition in the VM for the Linux OS to use, does the Linux OS boot to the desktop?

[mpack]

Today seems to be my day for wild guesses. On this one I would guess that the wrong partition was resized. Say: the swap partition.

[RomuloCS]

Hello everyone.
I have similar problem that I cannot solve. I had resized the partition but still the VM with Ubuntu cannot start and show the blinking underscore. I am attaching the log file in case someone of you can help me.
I will really appreciate any idea on it.

All the best,

[ElVirtuoso]

Hello everyone.
I have similar problem that I cannot solve. I had resized the partition but still the VM with Ubuntu cannot start and show the blinking underscore. I am attaching the log file in case someone of you can help me.
I will really appreciate any idea on it.

All the best,

Hello,

Would you happen to have solved your problem? I am running into the same issue.

Thank you