[Bug 103072] New: [Regression] Hardware video acceleration of VP9 format is broken since kernel 4.13

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103072

            Bug ID: 103072
           Summary: [Regression] Hardware video acceleration of VP9 format
                    is broken since kernel 4.13
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: bugs.freedesktop at maximbaz.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 134634
  --> https://bugs.freedesktop.org/attachment.cgi?id=134634&action=edit
screenshot_vp9_rendering_issue

See attachment on how a video encoded with VP9 format is being rendered with
hardware acceleration enabled since I upgraded the kernel to 4.13.3. There is
no issue with playing H264 videos. Downgrading kernel to 4.12.12 resolves the
issue. A few people in [1] confirm the same behavior.


Reproducible on ArchLinux with mpv or chromium compiled with VA-API. 

People who confirm this bug have the following CPUs: Intel i7-7820HQ, i7-7500U,
Pentium n3450.


This bug was also submitted to the kernel [2], but it was suggested in [1] that
this might be a better place to report it.

[1] https://aur.archlinux.org/packages/chromium-vaapi
[2] https://bugzilla.kernel.org/show_bug.cgi?id=197113

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