Stuck in a restart loop after fresh Ubuntu 20.04.3 LTS installation

Question

I'm stuck in a restart loop after installing Ubuntu. I tried everything I could but it didn't help. I also tried reinstalling.

After restarting the screen flickers once displaying:

[136.270728] sd-umoun[5824]: Failed to unmount /oldroot: Device or resource busy
[136.271541] sd-umoun[5825]: Failed to unmount /oldroot/dev/pts: Device or resource busy
[136.272356] sd-umoun[5826]: Failed to unmount /oldroot/dev: Device or resource busy
[136.274237] shutdown[1]: Could not detach loopback /dev/loop0: Device or resource busy
[136.275094] shutdown[1]: Failed to finalize file systems, loop devices, ignoring

Then it displays Reset System in the corner and starts to loop.

Device:

Lenovo ideapad slim 1
RAM 4gb
250 gb ssd
intel N4020 1.1GHz
Windows 10 Home preinstalled

I'm a newbie and i followed the exact steps for installation from ubuntu official website. — thisisdayal, Nov 26 '21 at 08:24
i've same laptop with celeron. did you try to change to UEFI boot? — abu-ahmed al-khatiri, Nov 26 '21 at 10:55
This may not help, but when I personally installed Ubuntu, I enabled UEFI, and chose the UEFI option on the boot menu. — TheKodeToad, Nov 26 '21 at 11:11
i have seen these warnings during installation [https://askubuntu.com/questions/832524/possible-missing-frmware-lib-firmware-i915] will this be the problem? — thisisdayal, Nov 26 '21 at 13:02

score 1 · Accepted Answer · answered May 18 '22 at 20:20

1

Had the same issue, changed boot mode from "UEFI Hybrid" mode in the BIOS to the "UEFI Native" mode. The restarts stopped happening and the system booted normally.

This was on a HP Elitebook 820 G1.

answered May 18 '22 at 20:20

Owl

546

Stuck in a restart loop after fresh Ubuntu 20.04.3 LTS installation

1 Answers1

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