[Bug 108503] Display flashes when PSR enabled on gen9

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108503

--- Comment #21 from Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com> ---
(In reply to Jose Roberto de Souza from comment #18)
> Thanks for all the information so far Ronald.
> 
> Could you try again with amdgpu disabled + this patches?
> https://github.com/zehortigoza/linux/commits/psr-debug-108503
> 
> It is rebased over drm-tip from today so you can just checkout this or
> cherry-pick the last 10 patches.
> 
> Thanks for helping debug this, we are still trying to get a similar MacBook
> to try this by ourselves.

It seems like the panel doesn't recognize that the GPU is putting it in a
self-refresh mode. We can read PSR sink status DPCD when the screen is idle
through ssh and confirm if the sink has entered PSR.

We could perhaps try disabling CRC too as a way to configure a safer setup. I'd
also recommend not using the fastboot command line option for debug purpose.

Ronald,
Does the screen back up after it goes black (via a mouse or keyboard action)?

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20181108/df4a2cf7/attachment.html>