Bug 217398

Summary: amdgpu module loading breaks display output - no signal
Product: Drivers Reporter: a1bert (a1bert)
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: RESOLVED ANSWERED    
Severity: normal CC: regressions
Priority: P3    
Hardware: AMD   
OS: Linux   
Kernel Version: 6.3.1 Subsystem:
Regression: No Bisected commit-id:
Attachments: dmesg 6.3.1

Description a1bert 2023-05-04 09:09:20 UTC
after loading amdgpu module of 6.3.1 kernel (from ubuntu kernel-ppa) monitor starts "blinking" between blank screen and "no signal" message

console nor X are working

model name	: AMD Ryzen 5 5600G with Radeon Graphics
Comment 1 a1bert 2023-05-04 09:10:11 UTC
Created attachment 304212 [details]
dmesg 6.3.1
Comment 2 a1bert 2023-05-04 09:12:39 UTC
Comment on attachment 304212 [details]
dmesg 6.3.1

non working 6.3.1 kernel
Comment 3 The Linux kernel's regression tracker (Thorsten Leemhuis) 2023-05-05 03:51:02 UTC
*** Bug 217397 has been marked as a duplicate of this bug. ***
Comment 4 The Linux kernel's regression tracker (Thorsten Leemhuis) 2023-05-05 03:51:11 UTC
This report here will likely not be seen by the amdgpu developers, they expect bugs to be filed here instead:
https://gitlab.freedesktop.org/drm/amd/-/issues

If you file it there, please drop a link to the report here.

BTW, did it work on earlier kernels? Which ones? there is a report about a problem in earlier kernels that sound somewhat similar (but it might be something totally different): 
https://lore.kernel.org/all/46a7eb80-5f09-4f6a-4fd3-9550dafd497c@felixrichter.tech/