https://bugs.freedesktop.org/show_bug.cgi?id=67800
--- Comment #12 from Kertesz Laszlo laszlo.kertesz@gmail.com --- I attached a netconsole capture, maybe it helps.
I set the following kernel command line options
radeon.dpm=1 ignore_loglevel drm.debug=14
drm.debug=15 had too much output, dozens of lines per second.
It doesnt have the boot part because i had to enable netconsole runtime as i use a bridge and it comes up after netconsole wants to begin logging (if i use eth0 it logs until br0 comes up) if i use the kernel command line to set up netconsole.
I have a 17" LCD Monitor connected to the CRT1 connector.