GPU change, FreeBSD can't boot any longer

freezmi

freezmi

Hello!

I had to downgrade my GPU by inserting a Radeon RX570 instead of the RX6800 I had when I installed FreeBSD.

if I boot in 'Multi-User' profile -> graphical login tries to start but computer unexpectedly reboots instead.
if I try the 'Single User' profile the computer loads the kernel but freezes before providing any login. power button does not issue a halt, so it's clearly frozen.

what are my options? also is there a 'init=/bin/bash' equivalent in this bootloader so I simply get a command prompt without any rc.conf (and thus no amdgpu kernel module) being loaded? I know for sure that whatever firmware the RX570 needs it's not currently installed on the system.
 
ok, fixed it, thanks.

however I'm a bit confused in regards to the virtual terminal.

just realized how verbose and nice the 14.1 install image is during the kernel load.

on my system I had 'hw.syscons.disable=1' and that ment that I was getting no messages from the kernel during system boot.
my system is a 14.2 with a 15-CURRENT loader.

I clearly recall reading that syscons is marked for removal in the 14.2 release announcement.
what combination of amdgpu and something else should I be using in order to keep having verbose kernel messages during a graphical EFI-based boot?

I currently removed the 'hw.syscons.disable=1' line from loader.conf apparently without anything else breaking, but I'm not sure what the recommended setup would be going forward.
 
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