https://bugzilla.kernel.org/show_bug.cgi?id=200695
--- Comment #42 from babgozd (babgozdtb@outlook.com) --- (In reply to Meric07 from comment #41)
(In reply to Alex Deucher from comment #40)
(In reply to Meric07 from comment #39)
I experience the same problem with a R9 380X. Still can't boot into any distro with DC enabled. My monitor doesn't offer any other connection
than
VGA input, my GPU only offers DVI output, so i use a VGA to DVI adapter. It's disappointing this issue still continues after so many kernel revisions. I'll watch this thread hoping for good news.
I don't think this is related to the original report. Does passing amdgpu.dc=0 on the kernel command line in grub fix the issue?
Yes, with dc=0 the system starts up normally. I'm not sure if this is a fix or a workaround though.
It has to be just a workaround. There is a problem with AMDGPU Display Code or something that utilizes it but since even console goes black, problem is something within kernel. Setting "amdgpu.dc=0" basically disable AMDGPU Display Code so we do not benefit from it.