Bug 111299

Summary:	AMD RX 570 Black Screen/Hang at startup (AMDGpu DC problem)
Product:	DRI	Reporter:	Surena Karimpour <suren.karimp>
Component:	DRM/AMDgpu	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED MOVED	QA Contact:
Severity:	major
Priority:	medium	CC:	nicholas.kazlauskas
Version:	XOrg git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Surena Karimpour 2019-08-05 13:05:10 UTC

Hello, AMD RX 570 faces a blank, black screen at boot. This started happening after linux kernel 4.17 started enabling amdgpu DC by default, and only solution (for now) is disabling amdgpu DC using amdgpu.dc=0 kernel boot parameter.

Here is like to original bug, in Ubuntu's tracker:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1837945

Sytem information (inxi -SGxxx): https://paste.ubuntu.com/p/sWW27FBwCG/

Comment 1 Michel Dänzer 2019-08-05 14:19:01 UTC

Please attach the Xorg log and output of dmesg without amdgpu.dc=0.

Comment 2 Surena Karimpour 2019-08-05 14:30:24 UTC

Its not possible to report without amdgpu.dc=0
Its absolutely impossible to boot the system, it tries to boot and then 'dies', quite literally, as nothing functions on the system.

Comment 3 Martin Peres 2019-11-19 09:38:35 UTC

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