[Bug 1848522] Autopkgtest regression report (mesa/19.2.1-1ubuntu1~18.04.1)

[Ubuntu SRU Bot]

All autopkgtests for the newly accepted mesa (19.2.1-1ubuntu1~18.04.1) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

firefox/70.0.1+build1-0ubuntu0.18.04.1 (armhf)
pymol/1.8.4.0+dfsg-1build1 (armhf)


Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-
migration/bionic/update_excuses.html#mesa

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

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https://bugs.launchpad.net/bugs/1848522

Title:
  Backport packages for 18.04.4 HWE stack

Status in libclc package in Ubuntu:
  Invalid
Status in libdrm package in Ubuntu:
  Invalid
Status in llvm-toolchain-9 package in Ubuntu:
  Invalid
Status in mesa package in Ubuntu:
  Invalid
Status in xorg-server-hwe-18.04 package in Ubuntu:
  Invalid
Status in libclc source package in Bionic:
  Fix Committed
Status in libdrm source package in Bionic:
  Fix Committed
Status in llvm-toolchain-9 source package in Bionic:
  Fix Committed
Status in mesa source package in Bionic:
  Fix Committed
Status in xorg-server-hwe-18.04 source package in Bionic:
  New

Bug description:
  [Impact]

  These are needed for 18.04.4 images.

  [Test case]

  Boot a daily image, see that it still has the necessary stack
  installed and working.

  Check upgrade from stock bionic.

  [Regression potential]

  libdrm: very minimal chance for regressions

  llvm-9: a new package, no regression potential on it's own

  libclc: more or less just adds support for new llvm

  mesa: a new major release, but we'll pull the final stable release of
  19.2.x series, so there shouldn't be any regressions left at that
  point

  xserver: a new git snapshot (or maybe a point-release)

  xorg drivers: modest updates, mainly just new ati/amdgpu

  [Other info]

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