[Intel-gfx] [PATCH 5/5] drm/i915: Enable PSR by default.

[Vivi, Rodrigo]

On Sat, 2015-04-18 at 08:27 +0100, Matthew Garrett wrote:
> On Mon, Apr 13, 2015 at 04:46:29PM -0700, Rodrigo Vivi wrote:
> > Another questions,
> > 
> > Are you using powertop --auto-tune?
> > 
> > If so, can you please try to repdoruce X slowness issue on these 2 scenarios:
> > 1. without doing the powertop auto-tune and psr enabled.
> 
> Ah! Yes, this is the problem. If runtime PM is enabled on the i915 PCI 
> device (and the HDMI HDA device), things break. If it's disabled, 
> everything works fine. I hope that helps narrow it down!
> 

Are you using external USB keyboard and mouse? I can just face this
slowness when using USB, if I don't use any USB everything is fine. If
switch all USB powertop scripts to "Bad" I also can use my system
reliably. This seems a bug in usb power management. Could you please
verify if this is the same that I'm facing here?

One extra thing, could you confirm that you face this behaviour even
with i915.enable_psr=0 so Daniel can accept this last patch?

Thank you very much,
Rodrigo.