i965-va-driver 1.5.0 shows green block artifacts on decoding some mkv/h264 videos

[Wladimir Mutel]

reverting to 1.3.2 restores the desired behaviour.
I use xine-ui 0.99.9-1.2 configured for vaapi video output backend.
xine libs are of version 1.2.6-1build1.

in xine logs I see this :
[h264 @ 0x7f2ce0003920] hardware accelerator failed to decode picture

initially the picture is reset to green screen, then it morphs somewhat, then blinks black and reset to green again.

libva info: VA-API version 0.37.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_37
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.37 (libva 1.5.0)
vainfo: Driver version: Intel i965 driver for Intel(R) Ironlake Mobile - 1.5.0
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple : VAEntrypointVLD
      VAProfileMPEG2Main : VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264Main : VAEntrypointVLD
      VAProfileH264High : VAEntrypointVLD
      VAProfileNone : VAEntrypointVideoProc

with 1.3.2 everything looks fine

libva info: VA-API version 0.37.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_35
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.37 (libva 1.5.0)
vainfo: Driver version: Intel i965 driver for Intel(R) Ironlake Mobile - 1.3.2
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple : VAEntrypointVLD
      VAProfileMPEG2Main : VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264Main : VAEntrypointVLD
      VAProfileH264High : VAEntrypointVLD
      VAProfileNone : VAEntrypointVideoProc

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: i965-va-driver 1.5.0-1
ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
Uname: Linux 3.19.0-7-generic x86_64
ApportVersion: 2.16.2-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Mar 9 11:25:08 2015
InstallationDate: Installed on 2009-11-01 (1953 days ago)
InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
SourcePackage: intel-vaapi-driver
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastian Ramacher (s-ramacher)]

This looks a lot like http://lists.freedesktop.org/archives/libva/2015-January/003077.html. Since upstream is still waiting on more info, could you please contact them and provide them with the info necessary to fix this bug?

[Wladimir Mutel (mwg)]

( continued the discussion at http://lists.freedesktop.org/archives/libva/2015-March/003239.html )

[Wladimir Mutel (mwg)]

In discussion with <email address hidden> we found that this bug is reproducible only in xine, no other players (I tested at least mpv -vo=vaapi). So this should be reassigned to xine package.