Amdgpu kernel oops and freezing graphics

[Harvey]

Alex,

Am 04.08.20 um 22:01 schrieb Alex Deucher:
> On Tue, Jul 21, 2020 at 2:21 PM Harvey <harv at gmx.de> wrote:
>>
>> Alex,
>>
>> tnak you so much - you're my hero!
>>
>> Am 21.07.20 um 18:17 schrieb Alex Deucher:
>>> On Mon, Jul 20, 2020 at 4:22 AM Harvey <harv at gmx.de> wrote:
>>>>
>>>> Hello,
>>>>
>>>> this is my first post to this list so please be patient with me ;)
>>>>
>>>> The facts:
>>>>
>>>> it is now one week that I own a new laptop, a MSI Bravo 17 A4DDR/MS-17FK
>>>> with Ryzen 7 4800U and hybrid graphics on a Radeon RX 5500M. I installed
>>>> my beloved Archlinux but I can't start any graphics withpout kernel oops
>>>> on it beside the normal console, even calling 'lspci' on the console is
>>>> provoking errors.
>>>>
>>>> I am using linux kernel 5.7.9 and linux-firmware 20200619.e96c121
>>>>
>>>> (FWIW: I even tried with a self-cmpiled kernel 5.8-rc5 and
>>>> linux-firmware directly from the git repository - no changes)
>>>>
>>>> The following is only part of the information I can provide but I didn't
>>>> want to make this mail bigger than it already is.
>>>
>>> Does appending amdgpu.runpm=0 on the kernel command line in grub help?
>>
>> Yes it does. Woohoo! The system is not freezing anymore! Can I provide
>> any further information to get this sorted?
>>
>> I will be happy to help investigating and testing if needed.
>
> Does appending pci=noats on the kernel command line in grub also fix the issue?

No, it does not. I tested with pci=noats on kernel 5.7.11 and 5.8 and on
both the kernel oopses and freezes again. Only amdgpu.runpm=0 does the
trick.

FWIW, booting kernel 5.8 without any parameters does not work either.

Greetings
Harvey


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