This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1776563

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: bionic

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https://bugs.launchpad.net/bugs/1776563

Title:
  Acer Aspire A315 (Ryzen5/Radeon/FHD) Ubuntu 18.04 kernel cant load

Status in amd:
  New
Status in bugzilla package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in xserver-xorg-video-amdgpu package in Ubuntu:
  New

Bug description:
  CPU: Ryzen 5 2500U
  VGA: Radeon 535
  Notebook: Acer Aspire A315
  I've just bought a new AMD Ryzen/Radeon notebook (Acer Aspire 3) and I wanted 
to install an Ubuntu/Kubuntu 18.04 on it. I checked the bios settings and uefi 
was the only boot option, so there is no legacy mode what I had used with my 
old computer before. I downloaded the normal iso image and made an usb boot 
pendrive using mkusb. The boot was okay, I got an uefi type menu but after 
starting the kernel it paniced(?) instantly. 
  Error messages: ACPI Error [MAC0] Namespace lookup failure 
  ACPI ERROR 1 table load failures, 13 successful 
  BUG: soft lockup CPU#0 stuck for 22s
  ...
  ...
  EFI VGA framebuffer device
  clocksource tsc mask
  Switching to colour framebuffer device
  [28.040001] ...
  ...
  ...

  I've tried to boot the same pendrive on my girlfriend's Acer
  Travelmate with uefi and worked well.

  I searched and I found that the problem is maybe in connection with
  uefi framebuffer but I am not sure.

  Ubuntu 16.04 can be loaded with nomodeset and noacpi parameters but
  for 18.04 none of them are working. I tried 4.16,4.17 kernels too
  (replaced on live usb) but without any success. The result is totally
  equivalent.

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