Sorry for my bad English, I've a problem during the boot of Ubuntu 18.04 Bionic Beaver.

When I boot the first option of the grub "Ubuntu", a black screen appears and

says: [ 0.004000] 1.55 No iqr handler for vector 
      [ 0.004000] 2.55 No iqr handler for vector
      [ 0.004000] 3.55 No iqr handler for vector 

Or something like that and takes a long time to start the OS, then I can perfectly use it, my laptop is a Lenovo G50-45. I have had problems with the privative drivers, really I'm a newbie in Linux, but this problem makes me annoying.

If you have a link in this forum o another please share me the results or if you know how to resolve it, IDK please.

  • Hi Rulo! Welcome to AskUbuntu! This looks like a kernel issue to me. Can you please upgrade (or downgrade) your kernel and see if it happens in a particular kernel version or try a mainline kernel to see if it's a kernel issue or a patch issue. Aug 22, 2018 at 3:32
  • I've tried downgrading, I dont know if i done it well, I've restarted my lapton, and in advanced options I put a older version, appears 4.15.033 and I put 4.15.032 generic, and nothing happened. The error continues appearing, and other error with my Bluetooth... I start to get scared. :'c Aug 22, 2018 at 4:25

1 Answer 1


Now based on the situation for another user here please try this following steps:

  1. Open a terminal after your system boot with the key combinations of Ctrl + Alt + t. then
  2. Type sudo nano /etc/default/grub to open this file,
  3. Change the GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=nomsi,noaer", after editing do:
    • Type Ctrl + o and then Enter followed by Ctrl + x: This will save and close the editor
  4. Then run sudo update-grub, and reboot
  • Nothing happenes, It still jumping that error. I tried putting my iso in a virtualbox and works well. So IDK what to do :c Aug 22, 2018 at 4:11

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