Comment 415 for bug 1776563

Hi Bounces,
We're very sorry about it and it is a known issue. We'll be fixing it after some of our patches are backported.

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Software Engineer, MLSE
AMD, Advanced Micro Devices
Phone: +86-13761283909
Adam Yang

________________________________
From: <email address hidden> <email address hidden> on behalf of mazahakaforever <email address hidden>
Sent: Friday, April 5, 2019 4:25:15 PM
To: Yang, Adam
Subject: [Bug 1776563]

Even with my tricks i cannot boot into 5.0.5 Manjaro kernel. Downgrading
to 5.0.2 make my laptop booting without issues

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

Title:
  Acer Aspire A315 IOAPIC failure on Ubuntu 18.04, kernel hangs, can't
  load, kernel freeze (AMD Ryzen 5/Radeon/Raven) / AMDGPU Hybrid crash

Status in amd:
  Fix Released
Status in Linux:
  Incomplete
Status in linux package in Ubuntu:
  Triaged
Status in linux-firmware package in Ubuntu:
  Confirmed

Bug description:
  CPU: Ryzen 5 2500U
  VGA: Radeon 535
  Notebook: Acer Aspire A315

  This is a brand new notebook on the market with Ryzen 5/Radeon.
  The default kernel of Ubuntu(18.04) hangs at loading with message:

  tsc: Refined TSC clocksource calibration: 1996.250 MHz
  clocksource: tsc: mask: 0xffffffffffffffff max_cycles: (...), max_idle_ns: (...)
  Soft lockup

  Using pci=noacpi kernel parameter kernel loads without any problem but
  my notebook produces more heat than on Win10. If I know right Acer
  notebooks need ACPI to the correct power management.

  The same thing happens on mainline 4.17,4.18rc1-2.
  BIOS upgrade to the latest version: 1.08 hasn't helped

  This problem has been reported upstream:
  https://bugzilla.kernel.org/show_bug.cgi?id=200087

  The latest correctly working kernel was 4.13.* but the heat problem
  was present with this too.

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