Stripes visible in video playback of some Matrox MGA AGP cards

Binary package hint: xserver-xorg-video-mga

There are flashing stipes in the right end of video window, even when playback is paused. Changing window size changes the effect; it might be unvisible in big enough window. Have not seen this effect by other graphics cards. Tested by vlc, totem-gstreamer, xine-ui by default settings. The stripes are not shown, if I choose "X11 video output" module in VLC.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-mga 1:1.4.11.dfsg-2ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-19-generic i686
Architecture: i386
Date: Fri Apr 9 22:10:20 2010
DkmsStatus: Error: [Errno 2] No such file or directory
GdmLog1: Error: command ['gksu', '-D', 'Apport', '--', 'cat', '/var/log/gdm/:0.log.1'] failed with exit code 1: cat: /var/log/gdm/:0.log.1: No such file or directory
GdmLog2: Error: command ['gksu', '-D', 'Apport', '--', 'cat', '/var/log/gdm/:0.log.2'] failed with exit code 1: cat: /var/log/gdm/:0.log.2: No such file or directory
InstallationMedia: Xubuntu 10.04 "Lucid Lynx" - Beta i386 (20100406)
MachineType: System Manufacturer Product Name
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-19-generic root=UUID=da1f8bc7-0cc5-4bbb-ae16-ec678cfae896 ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-mga
dmi.bios.date: 03/26/2001
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: 6.00 PG
dmi.board.name: FA11
dmi.board.vendor: First International Computer, Inc.
dmi.board.version: PCB 1.x
dmi.chassis.asset.tag: Asset Tag Number xxxxxx
dmi.chassis.type: 3
dmi.chassis.vendor: Manufactory Name
dmi.chassis.version: Version xx
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvr6.00PG:bd03/26/2001:svnSystemManufacturer:pnProductName:pvrSYS-xxxxxx:rvnFirstInternationalComputer,Inc.:rnFA11:rvrPCB1.x:cvnManufactoryName:ct3:cvrVersionxx:
dmi.product.name: Product Name
dmi.product.version: SYS-xxxxxx
dmi.sys.vendor: System Manufacturer
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-19-generic