[Bug 1776563] Re: Acer Aspire A315 IOAPIC failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) / AMDGPU Hybrid crash

You may check cpu frequency and try to cap it via cpupower. But high
power drain persist in windows too, so this is not fully linux problem.

To be honest, i'm not believe battery reset helps, but who knows...
There was another (cpu related) problem with another Acer laptop, that was fixed that way. I found this while searching solution for "this topic" ACPI issue:
https://forums.gentoo.org/viewtopic-t-1081448.html

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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:
New
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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