linux-kernel - amdgpu: black screen 70% of time on boot

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Message-Id: <1PEJVS.CLHTCJY89UP42@att.net>
Date: Wed, 30 Apr 2025 11:22:13 -0400
From: Steven J Abner <pheonix.sja@....net>
To: linux-kernel@...r.kernel.org
Subject: amdgpu: black screen 70% of time on boot

 Having issue with firmware. 2400g, no OS or LFS build. Linux version 
6.13.4, no initrd.
 Will boot 100% to linux console if I don't use firmware loading, and 
average about 30% of the time with firmware. Clarify: 100% I can use 
linux console, just with firmware I can only see it displayed 30% of 
the boot ups, includes boot output and login prompt.
 Not sure of steps needed to remedy. Dmseg(s) from a non-LFS match in 
the drm, amdgpu outputs:
[drm] initializing kernel modesetting (RAVEN 0x1002:0x15DD 
0x1002:0x15DD 0xC6).
amdgpu: ATOM BIOS: 113-RAVEN-113
amdgpu 0000:0e:00.0: [drm] fb0: amdgpudrmfb frame buffer device
 and dmesg(s) between blanked and displayed of LFS are identical.
Guidance please :)
Steve