Comment 0 for bug 1536438

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*.

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)