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Subject[bisected] Re: 5.7-rc0: regression caused by drm tree, hangs while attempting to run X
Hi!

> > > commit f365ab31efacb70bed1e821f7435626e0b2528a6
> > > Merge: 4646de87d325 59e7a8cc2dcf
> > > Author: Linus Torvalds <torvalds@linux-foundation.org>
> > > Date: Wed Apr 1 15:24:20 2020 -0700
> > >
> > > Merge tag 'drm-next-2020-04-01' of
> > > git://anongit.freedesktop.org/drm/drm
>
>
> > Any ideas, besides the b-word?
> >
> > Would c0ca be good commit for testing?
> >
> > commit 700d6ab987f3b5e28b13b5993e5a9a975c5604e2
> > Merge: c0ca5437c509 2bdd4c28baff
>
> c0ca is broken.
>
> commit 9001b17698d86f842e2b13e0cafe8021d43209e9
> Merge: bda1fb0ed000 217a485c8399
>
> Merge tag 'drm-intel-next-2020-03-13' of git://anongit.freedesktop.org/drm/d
> rm-intel into drm-next
>
> UAPI Changes:
>
> So bda1fb0ed000 looks like test candidate... and that one works.
>
> I guess 217a485c8399 is reasonable next step... and that
> 11a48a5a18c63fd7621bb050228cebf13566e4d8 should work ok.

# bad: [217a485c8399634abacd2f138b3524d2e78e8aad] drm/i915: Update DRIVER_DATE to 20200313
# good: [11a48a5a18c63fd7621bb050228cebf13566e4d8] Linux 5.6-rc2
git bisect start '217a485c8399' '11a48a5a18c63fd7621bb050228cebf13566e4d8'
# good: [837b63e6087838d0f1e612d448405419199d8033] drm/i915: Program MBUS with rmw during initialization
git bisect good 837b63e6087838d0f1e612d448405419199d8033
# good: [3a1b82a19ff91cfef9b5d9d9faabb0ebcac15df0] drm/i915/tgl: Allow DC5/DC6 entry while PG2 is active
git bisect good 3a1b82a19ff91cfef9b5d9d9faabb0ebcac15df0
# good: [ba518bbd3f3c265419fa8c3702940cb7c642c6a5] drm/i915: Force DPCD backlight mode for some Dell CML 2020 panels
git bisect good ba518bbd3f3c265419fa8c3702940cb7c642c6a5
# good: [73ce0969d1d0bc2cb53370017923640db72e70ec] drm/i915: Clean up integer types in color code
git bisect good 73ce0969d1d0bc2cb53370017923640db72e70ec
# bad: [aa64f8e1cf235f2e36615dba57c2c50d06181f84] drm/i915: Add Wa_1209644611:icl,ehl
git bisect bad aa64f8e1cf235f2e36615dba57c2c50d06181f84
# good: [32fc2849a3d59dc10efda38ef88e8f9052f711be] drm/i915/dsb: convert to drm_device based logging macros.
git bisect good 32fc2849a3d59dc10efda38ef88e8f9052f711be
# good: [4aea5a9e6521c1ad484992d490f1cefa7d73d1ec] drm/i915/gem: Mark up the racy read of the mmap_singleton
git bisect good 4aea5a9e6521c1ad484992d490f1cefa7d73d1ec
# bad: [7dc8f1143778a35b190f9413f228b3cf28f67f8d] drm/i915/gem: Drop relocation slowpath
git bisect bad 7dc8f1143778a35b190f9413f228b3cf28f67f8d
# good: [c02aac25f150d1b7215b9481f8cdd30cc607bedf] drm/i915/gem: Mark up sw-fence notify function
git bisect good c02aac25f150d1b7215b9481f8cdd30cc607bedf
# good: [07bcfd1291de77ffa9b627b4442783aba1335229] drm/i915/gen12: Disable preemption timeout
git bisect good 07bcfd1291de77ffa9b627b4442783aba1335229
# first bad commit: [7dc8f1143778a35b190f9413f228b3cf28f67f8d] drm/i915/gem: Drop relocation slowpath

Any ideas?
Pavel

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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