https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #135 from Bryan Quigley gquigs+bugs@gmail.com --- Created attachment 86825 --> https://bugs.freedesktop.org/attachment.cgi?id=86825&action=edit dmesg when under works due to setting .debug=1
I tried again with the latest rc3 build and it still doesn't work; I had left changes from comment 94 intact. Trying to get more information I tried booting with radeon.modeset=0 radeon.debug=1. Once I re-loaded the module with dpm, now it works! So it works correctly if you set it to debug mode, otherwise I can't get any logs of the event.
This is the dmesg from when it worked (with debug on). I noticed there are some HDMI errors; I only have DVI actually hooked up.