[Bug 22730] New: Xv broken with unified kms/ums driver

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=22730

           Summary: Xv broken with unified kms/ums driver
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: daniel at ffwll.ch
         QAContact: xorg-team at lists.x.org


Xv with an output window size above 1440x808 is broken on my machine.
Output-pixel-sized small stripes/blocks have completely wrong color/luminance.
Smaller sizes work. I didn't check other aspect ratios, yet.

Environment:
libdrm 4179c5f0a69b452cf94a507c13021e4918a3e02d from git
xserver 1.6.1.901-3 from debian unstable
kernel 2.6.31-rc1-00164-g4142ac6 (compiled without kms support)

Hardware:
amd64 with 4G ram
lspci of my radeon (sitting on an amd8xxx agp bridge):

05:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV570 [Radeon
X1950 Pro] [1002:7280] (rev 9a)
05:00.1 Display controller [0380]: ATI Technologies Inc RV570 [Radeon X1950
Pro] (secondary) [1002:72a0] (rev 9a)

I'v used git bisect to track this down:

last good: ac4bd24a66c1bdda0293f770a3f891e2b88cc8ee
first bad: d78d50591851d14543f0935d051a59ef29751bbc

I can't nail it further because _all_ of the changesets in between don't
compile on my box. I'll add a screenshot so you can see what the visual
corruption actually looks like.


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