Score:0

Ubuntu suddenly goes Black Screen

cn flag

I am currently using Ubuntu 22.04. But yesterday my os started to randomly go black screen. When that happens I have no longer access to my computer anyway but forced-shutdown by start button. Why could that happens and how to fix it?

Thanks for answers.

Rishon JR avatar
pl flag
Does CTRL+ ALT+ F3 Take you to a tty3 session?
bimal avatar
cn flag
No nothing happens when screen goes black.
Rishon JR avatar
pl flag
Try booting into an install media and click on try ubuntu instead of install ubuntu. then mount the drive using disks and see the `<DEVICE_ID>/var/log/boot.log` . paste the output in your question(by editing it).
bimal avatar
cn flag
I found the file but it has approximately 6700 lines. Should I paste it anyway or what should I do/
Rishon JR avatar
pl flag
Copy and paste into a new paste on [pastebin](http://pastebin.com/) and share the link so I can try to find what's wrong. I'll try my best to solve your problem.
Rishon JR avatar
pl flag
There is also a [boot repair tool](https://sourceforge.net/projects/boot-repair-cd/) which boots of your USB and repairs your disk.
bimal avatar
cn flag
[pastebinlink](https://pastebin.com/yxSzk1Un) .I also thank you for your attention.
Rishon JR avatar
pl flag
What's your graphics card? The log says that it failed to find your graphics card.
bimal avatar
cn flag
GeForce GTX 1650 Ti Mobile. I have installed a driver from additional drivers.
Rishon JR avatar
pl flag
I am terribly sorry for the late response, but I hope my answer helps.
Score:0
pl flag

Solution 1:

  • Boot from the Installation media and select Try Ubuntu
  • Mount your ubuntu disk using the Disks app
  • Enable safe graphics
sudo apt install vim
sudo vim /etc/default/grub

Then add nomodeset at the end of the GRUB_CMDLINE_LINUX_DEFAULT like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"

Press the Shift + : then release. The Type wq then press Enter and then run sudo update-grub

  • Reboot into the Current Ubuntu Installation and Reinstall the Driver
  • Do sudo vim /etc/default/grub, remove nomodeset, then sudo update-grub and reboot.

Solution 2 (If the first method doesn't work):

  • Download the boot repair live cd ISO and then flash into a USB
  • Boot into it and once you boot, there should be a screen.
  • Click on recommended repair and follow the steps if any.
  • After it finished, reboot and your done.

Final Resort(If none of them works):

  • Back up your data using file backup app and once it opens one of the buttons it should say "create my first backup" and that's the button you want to press.
  • Reinstall ubuntu using the live Ubuntu Reinstall media.
  • Restore your backup by following the last part of this guide.

I hope this helps.

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