I have a dual boot laptop with Windows 10 and Ubuntu 18.04. They have been working fine for some time now. Last night I had left the laptop on all night to download some big files. Now it is stuck at this black screen which appears after the loading screen.

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I tried to shutdown and boot into recovery mode. I couldn't find any errors, but I also don't know what to look for.

Edit: I have a Dell Inspiron 15, i3 3rd gen, 4gb ram, dual boot with windows 10 and Ubuntu 18.04, no gpu. This happened after the laptop shutdown due to low power. I have been using Ubuntu for some time. The same screen came a few times before during boot up but passed soon enough. I tried the nomodeset setting but it didn't work.

  • After rebooting does it always stop here? When booting into recovery, what happened? – ElefantPhace Nov 9 at 4:19
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    Thanks for the comments and answers. The problem turned out to be a filled up partition. The big file was a little too big. I made some space by going into recovery mode and it worked like a charm. – Kushagra Gupta Nov 9 at 16:43

You have Android Studio installed on your computer, so your computer probably has a discrete GPU and is using the appropriate graphics drivers for it. Booting with the nomodeset kernel option is worth a try.

Install Synaptic package manager.

sudo apt install synaptic 

Undo the most recent software update: Is there a way to undo software updates?

If booting with the nomodeset kernel option doesn't work try booting to an earlier kernel version.

  1. Immediately after the BIOS/UEFI splash screen during boot, with BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu. (If you see the Ubuntu logo, you've missed the point where you can enter the GRUB menu.) With UEFI press (perhaps several times) the Esc key to get to the GRUB menu. Sometimes the manufacturer's splash screen is a part of the Windows bootloader, so when you power up the machine it goes straight to the GRUB screen, and then pressing Shift is unnecessary.

  2. From the GRUB screen select Advanced options for Ubuntu and press Enter.

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  3. A new purple screen will appear showing a list of kernels, which includes options of booting the kernels normally or in recovery mode. Recovery mode offers a menu of recovery options including the option of dropping to a root shell prompt.

    enter image description here

  4. From the Recovery Menu use the arrow keys to select clean and press the Tab key to put the focus on <OK> and press Enter twice.

  5. The problem turned out to be a filled up partition. The big file was a little too big. Kushagra Gupta made some additional disk space by going into recovery mode and it worked like a charm.

  • Can you tell me what can I do after getting to a root shell? I don't really know about these things. – Kushagra Gupta Nov 9 at 13:25
  • The purpose of the root shell is to run commands the same as in a terminal if you can't get into the GUI desktop environment to run the same commands the normal way. For example if the latest kernel can't boot and the earlier kernels can boot you can uninstall the latest kernel version. – karel Nov 9 at 13:34

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