linux-kernel - RE: Linux 5.10-rc4; graphics alignment

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Message-ID: <eb79a45bfb7f4deb8d8d22350578a9dd@AcuMS.aculab.com>
Date:   Tue, 24 Nov 2020 16:27:19 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     David Laight <David.Laight@...LAB.COM>,
        'Thomas Zimmermann' <tzimmermann@...e.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>
CC:     Daniel Vetter <daniel.vetter@...ll.ch>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        "Huang, Ray" <ray.huang@....com>, Dave Airlie <airlied@...hat.com>,
        Christian König <christian.koenig@....com>
Subject: RE: Linux 5.10-rc4; graphics alignment

From: David Laight
> Sent: 20 November 2020 15:39
> 
> From: Thomas Zimmermann
> > Sent: 20 November 2020 13:42
> ...
> > I did a diff from v5.10-rc4 to drm-tip to look for suspicious changes.
> > Some candidates are
> >
> >    8e3784dfef8a ("drm/ast: Reload gamma LUT after changing primary
> > plane's color format")
> 
> Ok, that one fixes the screen colours (etc).
> So 8e3784dfef8a was good and then HEAD^ was bad.
> 
> I might try to bisect the breakage.
> 
> The stack splat is entirely different.
> I'll try to bisect that on Linus's tree.

The good news is I'm not getting the stack splat on rc5.
I'm not sure I can be bothered to find out when :-)

Applying 8e3784dfef8a to rc5 by hand also fixes the display colours.

	David

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