[Bug 1536438] Re: SRU: Need add uaccess tag for /dev/dri/renderD*

[Mathew Hodson]

** Changed in: systemd (Ubuntu Trusty)
   Importance: Undecided => High

** Tags removed: verification-needed

** Summary changed:

- SRU: Need add uaccess tag for /dev/dri/renderD*
+ Need add uaccess tag for /dev/dri/renderD*

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Title:
  Need add uaccess tag for /dev/dri/renderD*

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Trusty:
  Fix Released

Bug description:
  [Impact]
  The lts-wily backported kernel introduces the amdgpu driver. Graphics cards that use this driver need the render node (/dev/dri/renderD*) to be accessible to users.

  [Test Case]
  Install the lts-wily kernel, and check whether /dev/dri/renderD* is accessible or not.

  [Regression Potential]
  Low, as the change is already upstream and included in wily.

  --------------------------------
  3.16/3.19 Linux kernel add render node support which will create /dev/dri/renderD*.
  uaccess tag must be added to the /lib/udev/rules.d/70-uaccess.rules to make it access-able to login user just like /dev/dri/card*.
  It has been done on Ubuntu 15.04, but 14.04.3 has not.

  14.04.3 70-uaccess.rules
  # DRI video devices
  SUBSYSTEM=="drm", KERNEL=="card*", TAG+="uaccess"

  15.04 70-uaccess.rules
  # DRI video devices
  SUBSYSTEM=="drm", KERNEL=="card*|renderD*", TAG+="uaccess"

  Please fix this for AMD GPU driver will use the /dev/dri/renderD*.

  Fixed upstream in https://github.com/systemd/systemd/commit/735e5d

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: systemd-services 204-5ubuntu20.14
  ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7
  Uname: Linux 3.19.0-33-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.15
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Jan 21 10:06:24 2016
  InstallationDate: Installed on 2015-09-16 (126 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)

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