[Bug 2083020] Re: Backport packages for 24.04.2 HWE stack

[Andreas Hasenack]

Hello Timo, or anyone else affected,

Accepted mesa into noble-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/mesa/24.2.8-1ubuntu1~24.04.1 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: mesa (Ubuntu Noble)
       Status: Confirmed => Fix Committed

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https://bugs.launchpad.net/bugs/2083020

Title:
  Backport packages for 24.04.2 HWE stack

Status in OEM Priority Project:
  New
Status in libdrm package in Ubuntu:
  Invalid
Status in llvm-toolchain-19 package in Ubuntu:
  Invalid
Status in mesa package in Ubuntu:
  Invalid
Status in meson-1.5 package in Ubuntu:
  New
Status in spirv-llvm-translator-19 package in Ubuntu:
  Invalid
Status in libdrm source package in Noble:
  Fix Committed
Status in llvm-toolchain-19 source package in Noble:
  Fix Committed
Status in mesa source package in Noble:
  Fix Committed
Status in meson-1.5 source package in Noble:
  Fix Committed
Status in spirv-llvm-translator-19 source package in Noble:
  In Progress

Bug description:
  [Impact]
  The graphics HWE stack from oracular needs to be backported for 24.04.2

  libdrm
  - build-dep of mesa

  spirv-llvm-translator
  - build-dep of llvm
  - note that some symbols changed/added/dropped on certain archs due to older 
    gcc/toolchain, so dh_makeshlibs was overridden to not care about those

  llvm-toolchain-19
  - new source in noble
  - build-dep of mesa
  - required for new AMD platforms
  - needs two uploads:
    * 1st stage bootstrap build
    * 2nd stage after spirv-llvm-translator has built against 1st stage

  mesa
  - new major release, last of the series (24.2.8) so it has accumulated all
    the fixes upstream considered worthy for it
  - new HW support, Lunar Lake, Battlemage..

  meson-1.5
  - needed by mesa
  - Conflicts/Replaces meson, because otherwise all of the python lib should be
    renamed, along with the includes etc so it's not a trivial amount of work
  - tests disabled because four irrelevant ones fail for some reason, doesn't
    affect the mesa backport

  [Test case]
  We want to cover at least 2-3 different, widely used and already previously supported GPU generations from both AMD and Intel which are supported by this release, as those are the ones that cover most bases; nouveau users tend to switch to the NVIDIA driver after installation. No need to test ancient GPU's supported by mesa-amber. And best to focus on the newer generations (~5y and newer) as the older ones are less likely to break at this point.
  - AMD: Vega, Navi1x (RX5000*), Navi2x (RX6000*), Navi3x (RX7000*)
  - Intel: gen9 (SKL/APL/KBL/CFL/WHL/CML), gen11 (ICL), gen12 (TGL/ADL/RKL/RPL/DG2)

  Install the new packages and run some tests:
  - check that the desktop is still using hw acceleration and hasn't fallen back to swrast/llvmpipe
  - run freely available benchmarks that torture the GPU (Unigine Heaven/Valley/Superposition)
  - run some games from Steam if possible

  and in each case check that there is no gfx corruption happening or
  worse.

  Note that upstream releases have already been tested for OpenGL and
  Vulkan conformance by their CI.

  [Where things could go wrong]
  This is a major update of Mesa, there could be regressions but we'll try to catch any with testing. And since it shares bugs with oracular, we'd already know if there are serious issues.

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