2.2 - bootup error

guide linux

after performing a system for Ubuntu 24.04 update, system fails to boot properly and displays the error message:

Oh no! Something is wrong. A problem has occurred and the system can't recover. Please contact a system administrator.

attempts to access a terminal via ctrl + alt + f3 do not work. the esc or shift key during boot briefly shows something but no longer works. if you have important files on the system the following guide is for you

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lets walk you through this :3

step 1: boot into a live environment

since the system cannot boot properly, use a live usb to access the files and troubleshoot the issue

1. create a bootable usb with a linux distro using rufus (windows) or dd (linux/macos). or use the one you used initially to install ubuntu on to your system if you still have it
2. insert the usb into the pc and boot from it
3. select the option to “try ubuntu” (or your respective distro’s live mode)

step 2: mount the root filesystem

once inside the live session:

4. open a terminal

5. identify the root partition using:

   lsblk

6. mount the partition (assuming it’s /dev/sda2, adjust as needed):

   sudo mount /dev/sda2 /mnt

7. bind system directories:

   for i in /dev /proc /sys /run; do sudo mount --bind "$i" /mnt$i; done

step 3: chroot into the system

8. enter the installed system using:

   sudo chroot /mnt

9. update package sources:

   apt update

step 4: fix broken packages

10. try auto-fixing broken dependencies:

apt --fix-broken install

11. if the display manager is failing, reinstall it:

apt reinstall gdm3

(for kde, use sddm, and for xfce, use lightdm)

step 5: reinstall display drivers

if a driver issue caused the failure:

12. check for installed drivers:

ubuntu-drivers devices

13. install recommended drivers:

ubuntu-drivers install

step 6: update initramfs and grub

14. regenerate the initramfs:

update-initramfs -u -k all

15. update grub:

update-grub

step 7: reboot the system

16. exit the chroot environment and unmount everything:

exit
for i in /dev /proc /sys /run; do sudo umount /mnt$i; done
sudo umount /mnt

17. then remove the live usb and reboot:

sudo reboot

extras if the issue persists, check logs using:

journalctl -xb

or try an alternative session by running:

startx

my situation: my pc was not able to translate dns, couldn’t retrieve packages from official servers. pc was not able to update properly so got the error while doing a system update. terminal would not pop up even when pressing ctrl + alt + f3.

after chrooting into my system with the live boot, i was able to configure the dns settings. packages were then retrieved to fix missing mesa and nvidia packages

if your case is similar, check this out

if none of the above work, consider:

• contacting their official support
• joining their official discord and asking for help
• asking for help on r/Ubuntu
• backing up files and reinstalling the system
• crying cus i wasted your time :( </3