I would suggest to ship at least Mesa 19.0.4, because of the bug https://bugs.freedesktop.org/show_bug.cgi?id=110355 in some popular programs.
** Bug watch added: freedesktop.org Bugzilla #110355 https://bugs.freedesktop.org/show_bug.cgi?id=110355 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824111 Title: Backport packages for 18.04.3 HWE stack To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libclc/+bug/1824111/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs