Bug#711097: radeon rv100 XVideo diagonal tearing

[Trek]

Package: xserver-xorg-video-radeon
Version: 1:6.14.4-8
Tags: upstream

playing videos with mplayer causes diagonal tearing on fullscreen with
the xv driver, that uses Radeon Textured Video, even if it is played
step by step

the definition is not an issue as it appears always, as this example:
http://commons.wikimedia.org/wiki/File:Goa_1955_invasion.ogg

it appears perfect with the gl and x11 drivers

the problem appears with the default configuration, with KMS and
without composition, on an AGP ATI RV100 and AMD Athlon XP 2000+
the diagonal tearing is from up-right to down-left

it may be related to this bug:
https://bugs.freedesktop.org/show_bug.cgi?id=59606

if I run a composition manager (xcompmgr), casual horizontal tearing
appears, with xv, gl and x11 drivers, but this is another story


Instelled packages:

xserver-xorg-video-radeon  1:6.14.4-8 i386
libdrm-radeon1:i386  2.4.40-1~deb7u2 i386
linux-image-3.2.0-4-686-pae  3.2.41-2+deb7u2 i386
libxv1:i386  2:1.0.7-1+deb7u1 i386
mplayer  2:1.0~rc4.dfsg1+svn34540-1+b2 i386

Video card:

Advanced Micro Devices [AMD] nee ATI RV100 QY [Radeon 7000/VE]
RADEON(0): Chipset: "ATI Radeon VE/7000 QY (AGP/PCI)" (ChipID = 0x5159)

xvinfo output:

X-Video Extension version 2.2
screen #0
  Adaptor #0: "Radeon Textured Video"
    number of ports: 16
    port base: 63
    operations supported: PutImage 
    supported visuals:
      depth 24, visualID 0x21
    number of attributes: 2
      "XV_VSYNC" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 1)
      "XV_CRTC" (range -1 to 1)
              client settable attribute
              client gettable attribute (current value is -1)
    maximum XvImage size: 2048 x 2048
    Number of image formats: 4