How to fix ACPI error when booting Kubuntu 18.04?

Question

ubuntu

Hello.
Yesterday, out of the blue, the Kubuntu system stopped loading.
As it was, I saw that the Apache server had fallen, tried to restart it, nifiga, without even really looking at the Apache and system logs, sent the system to reboot. After reboot I see this message:

ACPI Error: [DSSP] Namespace lookup failure, AE_NOT_FOUND (20170831/psargs-364)

Before that, I did nothing with the system. I did not install updates, although notifications came.

Before writing here I rummaged through the net. I tried booting from a flash drive and adding parameters to /etc/default/grub, it did not help.
I would be very grateful if there is a solution.
UPD. I forgot to say, updating the BIOS to the latest version did not help.

Answer 1

Didn't install updates

As far as I remember, security updates are still enabled, otherwise it's just not clear where the problem comes from.
You need to enable the kernel logs and initramfs, for this you need to press F4 in the grub bootloader, find the line with the vmlinuz kernel parameters and remove quiet, and press ESC to boot. The last lines of the log can say a lot.
A similar situation happened to me, twice, the system did not boot, did not see the disks ... digging around, I assumed that a sequential update without rebooting (uptime happens up to six months) something broke in the initramfs and some necessary modules were not loaded, once I managed to save the situation , replacing vmlinuz and initramfs by taking them from livecd of the same version (it turns out to be old) this is not a panacea, consider it almost like a recovery, since, for example, proprietary drivers or other modules like virtualbox or kvm will not work, but you can pick it up from a working system or do backup of databases and files. Unfortunately, when this happened the second time, copying from livecd did not help, there was no time to figure it out then, I reinstalled the system.
If livecd also does not boot, then it looks like a hardware problem. In the BIOS, you can turn off ACPI, or rather play around with the settings to disable something, transfer something to another mode (for example, normal sleep mode will turn off)

Answer 2

RPman Thanks for your reply. Before trying your solution, I decided to check the root partition for errors using fsck , to my surprise, the utility found errors, fixed them, and after rebooting the system booted. I did not get to your method, but thanks anyway.