Comment 0 for bug 1772632

[Impact]

*** hwe-16.04 refresh for 16.04.4 ***

A minor update, only xserver sync, some driver updates plus a newer Mesa.

Mesa needs llvm-toolchain-6.0 and libclc, libdrm, updates.

[Test case]

upgrade from/to stock & old hwe stack, test desktop usage

[Regression potential]

libdrm:
Slim to none, changes from 2.4.83 to 2.4.91
- amdgpu: new pci-ids, bugfixes, tests
- intel: new pci-ids
- drm: leak fixes, manpage updates
- exynos, etnaviv, freedreno, android: fixes, new stuff

wayland-protocols:
None, just adds a few protocol definitions (xml files)

llvm-toolchain-6.0:
None, a new package

libclc:
I'd say none, very little has changed, added support for llvm-6 is the main reason for this slightly newer snapshot

xorg-server:
Slim, it's an upstream bugfix release, changes from 1.19.5 to 1.19.6+git include:
- security fixes
- backported bugfixes to glamor, modesetting driver, xwayland etc

mesa:
New major release plus a few bugfix updates after that. Regressions at this point are less likely. Upstream is tested by Intel CI system for instance. And we're already testing it via a ppa on OEM systems for 16.04.5. Tracking bug for the bugfix release (bionic) is bug 1772607

[Other info]

build order: [libdrm, llvm-toolchain-6.0], [libclc, xorg-server], mesa