I woke up today, pressed power button and got this screen. enter image description here I did some research and uninstalled nvidia drivers, which caused pkcs errors to go away. More research, and enabling secure boot caused uefi thing to go away. So it looks like this now. enter image description here I have no clue what's going on, I just migrated to Linux from Windows a week ago and I am upset it bricked itself.

I can type startx and go to desktop as root but internet does not work and I don't really know what to do. (startx would not boot to desktop before I removed nvidia drivers which was version 390 by the way). I am using kubuntu 18.04.1.

Some help would be nice.

(specs: Asus z170i pro gaming, i5-6400, evga gtx 1060)

up vote 2 down vote accepted

From what I can glean, the kernel is finding a known bug, since it cites the errata and asks you to modify microcode with a newer version.

I would need to know more from kernel and about your hardware and software configs.

What device is that? Sound card? Power interface, I had some problems a while ago with my Lenovo.

This might relate: Ubuntu 17.10 [Firmware Bug]: TSC_DEADLINE

Consensus looks to indicate you need to load new microcode:


I see, this looks akin to your issue:

ACPI Errors - Ubuntu 16.04/17.04 can not be installed

Looks like you can get grub to hang in there longer and allow more ACPI errors and still boot.

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_rev_override=5"

  • Is this an answer? – George Udosen Dec 6 at 18:06
  • You tell me. Was there a question in it? – user900446 Dec 6 at 18:08
  • i remember removing intel-microcode package because it caused a problem with something else but that was a week ago and it worked fine for a week. maybe an update that depended on it got installed and it bricked it self. – Kyuunex Dec 6 at 18:09
  • Sounds right. Thanks for that askubuntu.com/users/464666/kyuunex – user900446 Dec 6 at 18:09
  • installing iucode-tool and intel-microcode made that firmware bug message disappear but other messages are still there. – Kyuunex Dec 6 at 18:24

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