[BUG - BISECTED] display not detected anymore

[Heiko Carstens]

On Thu, Aug 19, 2021 at 09:07:26PM +0300, Ville Syrjälä wrote:
> > ef79d62b5ce5 ("drm/i915: Encapsulate dbuf state handling harder")
> > 
> > With that commit the display is not detected anymore, one commit
> > before that it still works. So this one seems to be broken.
> > 
> > Ville, Stanislav, any idea how to fix this?
> > 
> > commit ef79d62b5ce53851901d6c1d21b74cbb9e27219b
> > Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > Date:   Fri Jan 22 22:56:32 2021 +0200
> > 
> >     drm/i915: Encapsulate dbuf state handling harder
> 
> That has nothing to do with display detection, so very mysterious.
> 
> Please file a bug at https://gitlab.freedesktop.org/drm/intel/issues/new
> boot with drm.debug=0xe with both good and bad kernels and attach the
> dmesg from both to the bug.

Everything (hopefully) provided here:
https://gitlab.freedesktop.org/drm/intel/-/issues/4013

Please let me know if you need more, or if I can help otherwise to
resolve this.