[Bug 110425] VP9 no longer plays on Chromium with Mesa 18.3.6, Kernel 5.0.7 and Coffee Lake

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110425

            Bug ID: 110425
           Summary: VP9 no longer plays on Chromium with Mesa 18.3.6,
                    Kernel 5.0.7 and Coffee Lake
           Product: Mesa
           Version: 18.3
          Hardware: x86-64 (AMD64)
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: arcadiy at ivanov.biz
        QA Contact: intel-3d-bugs at lists.freedesktop.org

This is going to be a really crappy bug report and I apologize for that in
advance. 

A client has a remote system which is Intel NUC8i5BEK with Coffee Lake running
Fedora 29 (5.0.7-200.fc29.x86_64) Mesa 18.3.6 with chromium-vaapi
73.0.3683.103-1.fc29
(https://admin.rpmfusion.org/pkgdb/package/free/chromium-vaapi/):

libva info: VA-API version 1.4.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib64/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_1_4
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.4 (libva 2.4.0)
vainfo: Driver version: Intel i965 driver for Intel(R) Coffee Lake - 2.3.0
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Simple            : VAEntrypointEncSlice
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointEncSliceLP
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointEncSliceLP
      VAProfileH264MultiviewHigh      : VAEntrypointVLD
      VAProfileH264MultiviewHigh      : VAEntrypointEncSlice
      VAProfileH264StereoHigh         : VAEntrypointVLD
      VAProfileH264StereoHigh         : VAEntrypointEncSlice
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointEncPicture
      VAProfileVP8Version0_3          : VAEntrypointVLD
      VAProfileVP8Version0_3          : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointEncSlice
      VAProfileHEVCMain10             : VAEntrypointVLD
      VAProfileHEVCMain10             : VAEntrypointEncSlice
      VAProfileVP9Profile0            : VAEntrypointVLD
      VAProfileVP9Profile0            : VAEntrypointEncSlice
      VAProfileVP9Profile2            : VAEntrypointVLD


I'm locally running a system with an exact same version of software (kernel,
Mesa, chromium-vaapi), except locally it's Dell Precision 7510 with Skylake
GT2.

*****
Coffee Lake fails to play VP9 videos in Chromium & YT entirely.
Skylake plays VP9 videos in Chromium & YT no problem.
*****

The issue seems to have popped up somewhere between kernel 5.0.4 and 5.0.6 and
continues in 5.0.7.

Again, I apologize for vagueness and lack of detail.

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