https://bugs.freedesktop.org/show_bug.cgi?id=88464
--- Comment #7 from Arthur Marsh arthur.marsh@internode.on.net --- Created attachment 113271 --> https://bugs.freedesktop.org/attachment.cgi?id=113271&action=edit 2015020917dmesg.txt behaviour when booting with radeon.test=1 with 3.19 kernel and 3850hd
I tried booting with the 3.19 kernel and radeon.test=1 and had to restart afterwards to restore video output.