https://bugs.freedesktop.org/show_bug.cgi?id=67876
--- Comment #4 from jim.cromie@gmail.com --- So Ive apparently got bad rlc firmware from last Dec:
[jimc@groucho ~]$ sum radeon-fw/* /lib/firmware/radeon/CEDAR_* | sort 05888 3 /lib/firmware/radeon/CEDAR_rlc.bin 23436 3 radeon-fw/CEDAR_rlc.bin 35913 24 /lib/firmware/radeon/CEDAR_smc.bin 35913 24 radeon-fw/CEDAR_smc.bin 45275 6 /lib/firmware/radeon/CEDAR_me.bin 45275 6 radeon-fw/CEDAR_me.bin 55341 5 /lib/firmware/radeon/CEDAR_pfp.bin 55341 5 radeon-fw/CEDAR_pfp.bin [jimc@groucho ~]$ ll /lib/firmware/radeon/CEDAR_* -rw-r--r--. 1 root root 5504 Dec 23 2012 /lib/firmware/radeon/CEDAR_me.bin -rw-r--r--. 1 root root 4480 Dec 23 2012 /lib/firmware/radeon/CEDAR_pfp.bin -rw-r--r--. 1 root root 3072 Dec 23 2012 /lib/firmware/radeon/CEDAR_rlc.bin -rw-rw-r--. 1 root root 23888 Aug 7 15:18 /lib/firmware/radeon/CEDAR_smc.bin
The odd errors I saw now have a "usual suspect", I'll reboot with rc5 but still missing fw to see what bootlog looks like, then update that fw, and reboot again.