2015-06-23 8:28 GMT+02:00 Michel Dänzer <[email protected]>: > On 23.06.2015 04:19, Piotr Redlewski wrote: > > > > > > 2015-06-22 12:01 GMT+02:00 Piotr Redlewski <[email protected] > > <mailto:[email protected]>>: > > > > > > > > 2015-06-22 9:49 GMT+02:00 Michel Dänzer <[email protected] > > <mailto:[email protected]>>: > > > > On 21.06.2015 23 <tel:21.06.2015%2023>:30, Piotr Redlewski > wrote: > > > When turning the outputs off (DPMSModeOff), CRTCs stayed > enabled. This led > > > to higher card temperatures than with fglrx driver. > > > > > > Signed-off-by: Piotr Redlewski <[email protected] <mailto: > [email protected]>> > > > --- > > > src/drmmode_display.c | 9 ++++++++- > > > 1 file changed, 8 insertions(+), 1 deletion(-) > > > > > > diff --git a/src/drmmode_display.c b/src/drmmode_display.c > > > index 3564853..04b4341 100644 > > > --- a/src/drmmode_display.c > > > +++ b/src/drmmode_display.c > > > @@ -342,7 +342,14 @@ drmmode_do_crtc_dpms(xf86CrtcPtr crtc, > int mode) > > > static void > > > > > > > drmmode_crtc_dpms(xf86CrtcPtr crtc, int mode) > > > { > > > - /* Nothing to do. drmmode_do_crtc_dpms() is called as > appropriate */ > > > + drmmode_crtc_private_ptr drmmode_crtc = > crtc->driver_private; > > > + drmmode_ptr drmmode = drmmode_crtc->drmmode; > > > + > > > + /* Disable unused CRTCs */ > > > + if (!crtc->enabled && mode != DPMSModeOn) { > > > > Maybe this should be > > > > if (!crtc->enabled || mode != DPMSModeOn) { > > > > or can it actually happen that > > > > !crtc->enabled and mode == DPMSModeOn? > > > > Just wanted to be safe here, but I think you are right. I'll send > > v2 later today. > > > > I wanted to test changes before sending v2 and I stumbled on one issue. > > Everything works as expected when xrandr is used, but problem starts > > when screensaver > > comes into play. X calls > > drmmode_crtc_dpms() to on/off screensaver, so when it is supposed to be > > enabled, function is called with mode=DPMSModeOff and we > > call drmModeSetCrtc() to set crtc's mode to NULL. Problem is when X > > wants to disable screensaver: drmmode_crtc_dpms() is called with > > mode=DPMSModeOn and... nothing happens as there is no logic for this > > scenario - we should call drmModeSetCrtc() to set valid mode, but we > > don't know what this mode should be. > > Isn't crtc->mode valid at that point? > I don't think so, but I'll double check it
> If it's not, maybe we can store the mode in > > drmmode_crtc and use that > instead. > crtc mode is one thing, but we need other parameters as well: x/y crtc offsets, buffer id, connectors list - do you think that these also can be stored in drmmode_crtc ? > > > Because of the situation with the screensaver I think that original > > version of the patch is ok (it solves the problem with CRTC staying > > enabled when using xrandr to disable the output). > > It would be nice to get the same effect for DPMS off though, wouldn't it? > Of course, if I find a way to implement it I'll do it. > > > -- > Earthling Michel Dänzer | http://www.amd.com > Libre software enthusiast | Mesa and X developer > >
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