[Bug 109651] APL: eDP not recognized at power on

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109651

--- Comment #2 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Satyeshwar Singh from comment #0)
> After this change:
> ====
> commit 448aa9117cfa6591c4e18cb32a0329a66b9cd3b7
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Tue Nov 28 11:01:47 2017 +0000
> 
>     drm/i915: Enable hotplug polling after registering the outputs
> 
> ====
> 
> eDP is not working for our APL platform. I have an eDP panel connected to it
> but it doesn't show up as connected at power on. Please find my VBT info as
> well as a dmesg log with drm.debug=0x1e.

What does "after this change" mean when the change was made more than a year
ago, and you apparently have local modifications to the driver...?

You have things like i915.enable_initial_modeset=1 which never existed
upstream, and we have zero clue how things like that could interact with what
we're doing. We can't be responsible for how our changes might break code that
is not under our control!

So please do try to reproduce with upstream code as suggested by Lakshmi in
comment #1.

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