id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
4179	systemd (udev) wants group 'render'	bdubbs@…	lfs-book@…	"In version 236 NEWS:

The ""uaccess"" udev tag has been dropped from /dev/kvm and
/dev/dri/renderD*.  These devices now have the 0666 permissions by
default (but this may be changed at build-time). /dev/dri/renderD*
will now be owned by the ""render"" group along with /dev/kfd.

The group name can be changed by updating the rule in /lib/udev/rules.d/50-udev-default.rules or before install, rules/50-udev-default.rules.in.

SUBSYSTEM==""drm"", KERNEL==""renderD*"", GROUP=""render"", MODE=""@GROUP_RENDER_MODE@""
SUBSYSTEM==""kfd"", GROUP=""render"", MODE=""@GROUP_RENDER_MODE@

I do not see a need for a separate group as the default permissions are 0666.  If the assigned group is not available, then the group remains at the default: root.  

Perhaps we should just remove the GROUP=""render"" assignment.

Note that /dev/dri/renderD* appears to be used by a video driver.  See
https://ffmpeg.org/pipermail/ffmpeg-user/2016-November/034445.html
"	task	closed	low	8.2	Book	SVN	minor	fixed