On Sun, 2018-02-04 at 21:50 +0000, Andy Lutomirski wrote:
> On Sat, Feb 3, 2018 at 5:08 PM, Andy Lutomirski <l...@kernel.org> wrote:
> > On Sat, Feb 3, 2018 at 5:20 AM, Pandiyan, Dhinakaran
> > <dhinakaran.pandi...@intel.com> wrote:
> >>
> >> On Fri, 2018-02-02 at 19:18 +0000, Andy Lutomirski wrote:
> >>> I updated to 4.15, and the situation is much worse. With
> >>> enable_psr=1, the system survives for several seconds and then the
> >>> screen stops updating entirely. If I boot with i915.enable_psr=1, I
> >>> get to the Fedora login screen and then the system dies. If I set
> >>> enable_psr=1 using sysfs, it does a bit after the next resume. It
> >>> seems like it also sometimes hangs even worse a bit after the screen
> >>> stops updating, but it's hard to tell.
> >>
> >> The login screen freeze sounds like what I have. Does this system have
> >> DMC firmware? If yes, can you try this series
> >> https://patchwork.freedesktop.org/series/37598/. You'll only need
> >> patches 1,8,9 and 10.
> >
> > That fixes the hang. Feel free to add:
> >
> > Tested-by: Andy Lutomirski <l...@kernel.org>
> >
> > to the i915 parts. Also, any chance of getting it into the 4.15 stable
> > kernels?
>
> Correction: I'm still getting a second or two of complete screen
> freezing every now and then. The kernel says:
Thanks a lot for testing. How do you trigger this freeze? Moving the
cursor? Did you apply these patches on top of drm-tip or was it
mainline?
I also have another patch here that addresses screen freezes in console
mode with PSR - https://patchwork.freedesktop.org/patch/201144/ in case
that is what you are interested in.
>
> [69400.016524] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic
> update failure on pipe A (start=19 end=20) time 198 us, min 1073, max
> 1079, scanline start 1068, end 1082
>
> So something might still be a bit buggy.
This series fixes only the long freezes due to frame counter resets, I
am sure there are still other issues with PSR.
BTW does your patch on top of these patches help with the cursor lag?
-DK
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