[Bug 2135270] Re: mesa-va-drivers should be seeded by default

[Mario Limonciello]

Reading through that bug I understand the reason va-driver-all isn't
seeded is because there are other VA drivers which are not in main.

So I see the following potential paths forward to solve this issue:

1) Merge mesa-va-drivers binary package into mesa like other distros have.
2) Add mesa-va-drivers as a Recommends for mesa binary package.
3) Seed mesa-va-drivers in the ubuntu-desktop and ubuntu-desktop-minimal seeds.
4) MIR for any other VA drivers not in main already, followed by seeding va-driver-all in ubuntu-desktop and ubuntu-desktop-minimal seeds.
5) Do nothing - no hardware acceleration by default for mesa packages.

As same mesa source packages are used for Debian doing 1 or 2 will also benefit Debian too.
Doing 3 and 4 are solutions purely in seeding.  3 could be done in the short term and when MIR team is done switch to 4.

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https://bugs.launchpad.net/bugs/2135270

Title:
  mesa-va-drivers should be seeded by default

Status in libva package in Ubuntu:
  New
Status in mesa package in Ubuntu:
  New
Status in ubuntu-meta package in Ubuntu:
  New
Status in libva source package in Resolute:
  New
Status in mesa source package in Resolute:
  New
Status in ubuntu-meta source package in Resolute:
  New

Bug description:
  AMD systems (and really anyone with a VAAPI driver in mesa) have VAAPI
  enabled by default across the ecosystem, but only if the mesa-va-
  drivers package is installed.

  I was just checking and noticed that it's not seeded in resolute for
  ubuntu-desktop, but it is for practically every other derivative.

  $ apt rdepends mesa-va-drivers
  mesa-va-drivers
  Reverse Depends:
    Depends: va-driver-all

  $ apt rdepends va-driver-all
  va-driver-all
  Reverse Depends:
   |Suggests: libva2
    Recommends: xubuntu-desktop-minimal
    Recommends: xubuntu-desktop
    Recommends: ubuntustudio-desktop-core
    Recommends: ubuntukylin-desktop-minimal
    Recommends: ubuntukylin-desktop
    Recommends: ubuntucinnamon-desktop-minimal
    Recommends: ubuntucinnamon-desktop
    Recommends: ubuntu-mate-desktop
    Recommends: ubuntu-budgie-desktop-minimal
    Recommends: ubuntu-budgie-desktop
   |Recommends: steam-libs
    Recommends: lubuntu-desktop
    Recommends: kubuntu-desktop
    Recommends: edubuntu-desktop-minimal
    Recommends: edubuntu-desktop
    Depends: deepin-movie

  Shouldn't it be seeded in ubuntu-desktop too?

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