You'd have to build a new kernel to modify the profile at the moment. I believe what we have currently is the profile where the clocks are left untouched from what the bios sets them to on boot.
In terms of code it is sys/dev/pci/drm/radeon/radeon_pm.c adding something like the the following to the end of radeon_pm_init() might be enough to set a different profile but I've not tested it. rw_enter_write(&rdev->pm.rwlock); rdev->pm.profile = PM_PROFILE_LOW; radeon_pm_update_profile(rdev); radeon_pm_set_clocks(rdev); rw_exit_write(&rdev->pm.rwlock) On Sat, Jun 21, 2014 at 08:08:33PM +0200, Julian Andrej wrote: > Do you mind telling me where to find the power profile in the sources? > Or is it not possible at the moment even with changing and recompiling > the kernel? > > On 21 June 2014 19:03, Jonathan Gray <j...@jsg.id.au> wrote: > > On Sat, Jun 21, 2014 at 06:19:51PM +0200, Julian Andrej wrote: > >> Hello, > >> > >> is it possible to show/change the current fan speed, temperature and > >> clock of my video card? (ATI Radeon HD7770) > >> > >> `sysctl hw` shows sensors of my cpu and north bridge which seem > >> correct. I'm using the 5.5 release. > >> > >> I'm asking because i want to control the fan speed, which is much > >> lower with the proprietary driver for example on linux. > > > > There is a temperature sensor on some models but it isn't exposed via > > the sensors framework at the moment. > > > > The code has a notion of profiles as mentioned here: > > http://xorg.freedesktop.org/wiki/RadeonFeature/#index3h2 > > > > The choice of profile isn't exposed to userland currently. > > > > Newer upstream versions of the radeon code default to dynamic > > power control managed by the hardware (dpm) which apparently > > helps reduce noise quite a bit but that will have to wait until > > we have newer drm code.
