Bug 4858

Summary:	Only root:root can do DRI
Product:	DRI	Reporter:	Ciprian Asmarandei <ciprian.asmarandei>
Component:	General	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED NOTABUG	QA Contact:
Severity:	trivial
Priority:	medium
Version:	unspecified
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Ciprian Asmarandei 2005-10-24 06:00:03 UTC

System: PIII 733MHz 512MB RAM
Video card Radeon 7500 AGP
OS: Slackware Linux 10.2
X.org version 6.8.2

I noticed I have 3D hardware acceleration while beeing root and software
acceleration as being a normal user.

I searched in /dev/dri and found
crw-rw--- root root /dev/dri/card0

If I chown root.users /dev/dri/card0 I have 3D hardware accel as normal user.
If I chmod o+rw /dev/dri/card0 also.
But this can be done after X has started (standalone with startx or login from
init 4) becourse at every restart of X the permissions/owner/group of
/dev/dri/card0 get reset to "crw-rw--- root root /dev/dri/card0"

IMHO every user of the system should have 3D accel.
Please look into it.

Comment 1 Alex Deucher 2005-10-24 06:19:11 UTC

Since the DRI touches the hardware directly, it is limited to root by default. 
To allow all users, add the following section to your xorg.conf (feel free to
adjust the mode as you see fit):

Section "DRI"
	Mode 0666
EndSection

If that doesn't work it may be that your distro does dynamic permissions based
on groups.  Try adding yourself to the video or graphics group (or another
similar gourp).

Please re-open if you are still having problems.

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