Created attachment 149011 [details] kernel messages with dpm enabled Now that dpm is enabled by default on TURKS cards, I'd like to give another try to get it working on my card. Booting a 3.17-rc3 kernel results in a blank screen; the computer is not locked up, I still can ssh into the machine and grab the kernel messages. lspci reports: 01:00.0 0300: 1002:6840 (rev ff) (prog-if ff) !!! Unknown header type 7f Kernel driver in use: radeon Kernel modules: radeon 01:00.1 0403: 1002:aa90 (rev ff) (prog-if ff) !!! Unknown header type 7f Kernel modules: snd_hda_intel Loading the radeon module with dpm=0 works without problems. Note that dpm *did* work correctly until 3.13 kernels (using dpm=1); then it broke during the 3.14 delopement cycle. I bisected the bad commit in 6c7bccea390853bdec5b76fe31fc50f3b36f75d5 drm/radeon/pm: move pm handling into the asic specific code and reported the problem on the dri-devel ml, without luck. My guess is that something changed during the initialization of the card which is confusing this GPU, but I was unable to identify the problem by myself. Attached the kernel messages after loading the radeon module on 3.17-rc3.
Kernel 3.17 is out and now radeon.dpm=0 is required in order to boot this system. Can I receive a comment about this problem? Why is this card special?
Does it work properly with radeon.runpm=0
No runpm=0 doesn't help. I read from your comments on 6c7bccea390853bdec5b76fe31fc50f3b36f75d5 that the initialization order changed, and it's possibly related to my problem. FWIW, (last time I checked, more than one year ago), fglrx seems to have a similar 'Unknown header type 7f' issue on this GPU. My bugreport on ATI bugzilla is here: http://ati.cchtml.com/show_bug.cgi?id=743