[solved] amdgpu freezes, linux starts

[Child_of_Sun_24]

Hello @all

Since i upgraded from a FX-8350 to a Ryzen 5 1600, i have a problem with the amdgpu driver (The radeon driver doesn't load, too but there i can't retrieve logfiles), when it loads the screen freezes with a colorful stroke on the screen. Linux is still starting but without any screen output, i can retrieve the logfiles through the sysresccd.

Here is my PC config:
MB: Gigabyte AX370-Gaming K3
CPU: Amd Ryzen 5 1600
GraKa: 1x Sapphire Radeon R9 280X
Ram: 2x8 GB 2133MHz (Corsair)
SSD: 2x256GB Sandisk (Windows 10 x64, Spiele)
SSD: 64GB Sandisk (Gentoo Hyper-V/Nativ)
HDD: 3TB Toshiba DT01ACA3 (Data)
External HDD: 250 GB Samsung (System-Backups)
Optisch: 1x Optiarc DVD-Burner, 1x LG BlueRay Burner
Netzteil: Thermaltake TR2 S 700W
Kühlung: Boxed Cooler
Kernel Gentoo-Sources-4.15.1 (with 4.14.15 it happens, too)

Here is the partial Output of dmesg:

[Zucca]

Before the hardware switch, did you emerge -e @world (to be precise you'd need to emerge binutils, gcc, etc first, then @world) with the new compiler flags for your new CPU?
If not, you may need to use the sysrescuecd to boot your PC and then chroot into your Gentoo install and change the make.conf accordingly. Finally recompile all the packages.
_________________
..: Zucca :..
Gentoo IRC channels reside on Libera.Chat.
--

[Child_of_Sun_24]

Yes i have made the emerge -e world as a first step after unpacking the stage3. With "-march=native -O2 -pipe -mtune=znver1 -fomit-frame-pointer".

When i compile amdgpu as a module, blacklist it and use simple-fb as framebuffer the System works just fine, in the VM (HyperV, Windows 10) it works, too. Only amdgpu isn't working (The radeon driver gives me errors, too but there i can't provide logs)

*EDIT*
I have forgotten to say that i made a new installation from a stage3 after the processor/mainboard/ram was changed.

[Zucca]

Although your system should not shut the display output when the firmware is missing... Make sure you have the right firmware for your GPU.
... and also correct microcode for your CPU.
_________________
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Gentoo IRC channels reside on Libera.Chat.
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[PrSo]

Yours graphic card, as I understood correctly, is R9 280X THAITI, which is Southern Islands family (CI in kernel nomenclature), and support for Southern Islands and Sea Islands (CIK) is _still_ experimental in amdgpu kernel driver.

Four questions arise:

1. Is this problem occurs on kernel compiled with radeon _only_ (eventually amdgpu _only_) driver also? Because from what you are saying you have two drivers compiled in kernel, radeon and amdgpu.

2. Is the driver compiled as module or is included in vmlinuz, and have you included necessarily firmware into kernel image as provided in the wiki?

3. What options are enabled in yours kernel config in accordance to amdgpu driver?

4. Did you try any earlier kernel version than 4.14 (I mean that if amdgpu or radeon driver ever worked for you)?

You could find thru "git bisect" the commit which is causing problems and submit a bug report on bugzilla.

Maybe you could try a kernel from amd devs which is theirs testing ground with all lates patches for CI and CIK included:
https://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-4.17-wip with a "git clone".

You cold try also to remove graphic card from the slot and place it again (I know that this sounds silly but I have seen a strange behavior caused by not properly installed gpu on my old rig).

[Zucca]

Also. If you REALLY need to have both radeon and amdgpu you need make sure they don't conflict.
I've had a multiseat setup where I needed both. I managed to pull it off by writing some custom udev rules to map each driver to corresponding GPU.
_________________
..: Zucca :..
Gentoo IRC channels reside on Libera.Chat.
--

[Child_of_Sun_24]

I haven't radeon and amdgpu in the kernel, when i switch between them i compile the kernel new without the other driver.

The correct firmware is provided by an initrd, microcode for the kernel is compiled in the kernel.

With my old mainboard everythin worked, i think it's an error with the new mainboard.

In systemreccd-5.1.2 the radeon driver works but when i use my own kernel it doesn't work.

I will try an older kernel and look if it's working.

In the log i provided the amdgpu driver was compiled into the kernel, at the moment i compiled it as a module which makes the same error.

*EDIT*
Kernel .config for amdgpu
https://pastebin.com/8wVAv6Dx

*EDIT2*
With gentoo-source-4.9.80 the radeon driver is working

*EDIT3*
Found the error ( https://wiki.gentoo.org/wiki/AMDGPU#Kernel_2 ) the AMD Secure Memory Encryption were enabled by default, deactivating it solves the problem to be safe i set the kernel command line option mem_encrypt=off

[PrSo]