Bug 1529776

Summary:	CONFIG_DRM_AMDGPU_SI is not set
Product:	[Fedora] Fedora	Reporter:	Sebastian <tichun>
Component:	xorg-x11-drv-ati	Assignee:	X/OpenGL Maintenance List <xgl-maint>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	27	CC:	airlied, ajax, alexl, bskeggs, caillon+fedoraproject, ewk, hdegoede, ichavero, itamar, jarodwilson, jcline, jglisse, john.j5live, jonathan, josef, kernel-maint, labbott, linville, mchehab, mjg59, ozeszty+rhbz, rhbugs, rhughes, rstrode, sandmann, steved, tcallawa, xgl-maint
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Hardware:	Unspecified
OS:	Linux
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Last Closed:	2018-06-22 14:15:55 UTC	Type:	Bug
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Description Sebastian 2017-12-29 22:07:48 UTC

Description of problem:
Users of AMD graphic processing units leveraging GCN architecture from before the GCN 1.2 revision cannot use amdgpu driver that supports Vulkan (current one doesn't).

Version-Release number of selected component (if applicable):
4.14.8 (current)

How reproducible:
100% on my GCN 1.0 hardware

Steps to Reproduce:
1. Use GCN1.0 or likely GCN 1.1 amd-gpu as well;
2. Add "radeon.si_support=0 radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1" to boot parameters 
3. Reboot

Actual results:
no gpu acceleration is present (low resolution etc.)

Expected results:
Fully working driver that supports Vulkan and is on pair with currently used driver in other areas.

Additional info:
This driver is considered experimental BUT it will not make it worse for anyone as it still has to be enabled by the kernel command line parameters and it brings the possibility of using Vulkan API plus is a little bit faster at opengl and makes the previous driver redundant in the long run.
I can only see benefits of enabling it.

Comment 1 Laura Abbott 2018-01-02 17:29:07 UTC

Moving this to the graphics team for appropriate tracking.

Comment 2 Sebastian 2018-02-10 11:09:59 UTC

I might have not stated it clear enough:
- kernel is compiled without CONFIG_DRM_AMDGPU_SI=Y

One might say that this driver is experimental (since 4.9) but it's not the default even when you enable it at compile time, users still get radeon driver.
Advanced users who would like to try out vulkan, or test the driver etc. still have to set the kernel command line with parameters (radeon.si_support=0 amdgpu.si_support=1) and probably blacklist radeon module elsewhere.

Comment 3 ozeszty 2018-06-22 07:28:39 UTC

This has been fixed with kernel 4.17 in F28 for me. AMD Oland is working fine when booted with radeon.si_support=0 amdgpu.si_support=1 kernel parameters.

Comment 4 ozeszty 2018-06-22 07:36:20 UTC

Ups, it was 4.16 whet it started working, not 4.17.

Comment 5 Jeremy Cline 2018-06-22 14:15:55 UTC

Ah, thanks for catching this. Yes, it was turned on with the rebase to 4.16.