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[Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxx>]

I needed to do something like apt-get install xserver-xorg-lts-utopic
libegl1-mesa-drivers-lts-utopic libgl1-mesa-glx-lts-utopic:i386

John Gilbertson (blackcap93) wrote on 2015-01-29: 	#13
The new xorg/mesa packages should, but don't, have a "Provides: <name-of-package-being-replaced>" field in the Debian control file, to avoid breaking other installed packages which depend on the older xorg/mesa packages by name; for example, the lib-gl1-mesa-glx-lts-utopic package's control file should contain "Provides: lib-gl1-mesa-glx"

$ apt-cache show libgl1-mesa-glx-lts-utopic | grep Provides
Provides: libgl1, libgl1-mesa-glx, xorg-renamed-package, xorg-renamed-package-lts-utopic

Although the provides: libgl1 should be enough in this case, no need for
an explicit libgl1-mesa-glx but it's there anyway. ;-)

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Packages, which is subscribed to x11proto-core in Ubuntu.
https://bugs.launchpad.net/bugs/1400626

Title:
  Please backport xtrans, libdrm, x11proto-{fonts,core} packages for
  14.04.2

Status in libdrm package in Ubuntu:
  In Progress
Status in llvm-toolchain-snapshot package in Ubuntu:
  Invalid
Status in x11proto-core package in Ubuntu:
  New
Status in x11proto-fonts package in Ubuntu:
  New
Status in xorg package in Ubuntu:
  In Progress
Status in xtrans package in Ubuntu:
  In Progress
Status in libdrm source package in Trusty:
  Fix Released
Status in llvm-toolchain-snapshot source package in Trusty:
  Fix Committed
Status in x11proto-core source package in Trusty:
  Fix Released
Status in x11proto-fonts source package in Trusty:
  Fix Released
Status in xorg source package in Trusty:
  Fix Committed
Status in xtrans source package in Trusty:
  Fix Released

Bug description:
  In order to upload the new xorg-server we need to backport the following packages from utopic:
  libdrm
  x11proto-core
  x11proto-fonts
  xtrans

  libdrm 2.4.52-1->2.4.56-1 seems to have the following changes:
  - Hides private symbols from all libdrm libraries
  - fixes MSAA on Hawaii (radeon).
  - Adds cherryview pci-ids (intel).
  - Makes libdrm-nouveau threadsafe with concurrent access to the drm fd.
  - Fixes to exynos and freedreno.
  - Enables building libdrm-freedreno1 and libdrm-exynos1

  x11proto-core's main change appears to be changing from the 'pointer' type to 'void *':
  https://launchpadlibrarian.net/173873109/x11proto-core_7.0.24-1_7.0.26-1.diff.gz

  x11proto-fonts' main change is the same as x11proto-core, but the documentation is reformatted too:
  https://launchpadlibrarian.net/173873038/x11proto-fonts_2.1.2-1_2.1.3-1.diff.gz

  xtrans seems to have 2 minor changes, increase default unix pipe size and add support for systemd socket activation:
  https://launchpadlibrarian.net/173873112/xtrans_1.3.2-1_1.3.4-1.diff.gz

  xorg needs to be slightly updated, to allow xserver-xorg to provide
  the unrenamed lts-utopic, and to allow xorg to be installed with the
  renamed xorg-server.

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