radeon driver woes

Matthew Dillon dillon at backplane.com
Tue Jan 10 16:13:28 PST 2023

Hmm.  That's odd.  Well, DRM (the GPU subsystem) is often sensitive for
reasons we don't quite understand.  If loading the stuff via /etc/rc.conf
does not work reliably, you could consider loading it via /etc/rc.local by
slapping down the appropriate sequence of commands.  Sometimes the module
doesn't initiate quickly enough and followup programs (like xdm, startx,
Xorg, whatever) try to talk to the GPU too early.  I've taken to doing
something like this in /etc/rc.local to automate it:

klldoad (appropriate modules)
sleep 5
xdm / startx / whatever

And often I don't even try to start X automatically but just write a little
script to run on a fresh boot.  Since sometimes I don't want to boot in X
and otherwise just leave the system up and running for months so its no big
deal to start it manually once in a blue moon.
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