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Date:      Tue, 4 May 2010 16:37:01 +1000
From:      Peter Jeremy <peterjeremy@acm.org>
To:        Robert Noland <rnoland@FreeBSD.org>
Cc:        x11@FreeBSD.org, Martin Wilke <miwi@FreeBSD.org>
Subject:   Re: [HEADS UP] Xorg 7.5 merge comming tomorrow.
Message-ID:  <20100504063701.GD52686@server.vk2pj.dyndns.org>
In-Reply-To: <4BDFB7BF.9080600@FreeBSD.org>
References:  <20100430183522.GD64008@bsdcrew.de> <20100503061344.GA98887@server.vk2pj.dyndns.org> <4BDEE40F.9080503@FreeBSD.org> <20100503215027.GA52686@server.vk2pj.dyndns.org> <4BDFB7BF.9080600@FreeBSD.org>

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On 2010-May-04 00:59:27 -0500, Robert Noland <rnoland@FreeBSD.org> wrote:
>Hrm, do bad things happen before a pixel crosses vertical 2048?

I only have 1024 vertical px.  As far as I can tell, in a side-by-side
configuration, the problems start as soon as I write pixels onto the
RH window.  I will do so more careful checks and see if there's any
region on the left side of the RH display that is OK.

>  It=20
>looks like you have 2 1280x1024 displays and a virtual framebuffer 2560=20
>pixels wide.

That's the normal configuration.  I have also tried stacking
vertically (so I have a 1280x2048 VFB).  In this case, the top ~1/4 of
the lower screen is OK (and a slightly smaller region at the bottom
also appears OK) and the rest is corrupt.  I've tried increasing the
VFB size (via a "Screen" Virtual directive) to no avail.

>  I'm wondering if the issue occurs as soon as the window=20
>starts onto the second display, or if it has to go past 2048 before the=20
>problem appears.

Definitely not related to 2048 horizontal px.

There is a screenshot (from the xorg7.5 test patchset but it looks
the same) in http://bugs.freedesktop.org/show_bug.cgi?id=3D27805

--=20
Peter Jeremy

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