Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261592AbVA2XQe (ORCPT ); Sat, 29 Jan 2005 18:16:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261594AbVA2XQe (ORCPT ); Sat, 29 Jan 2005 18:16:34 -0500 Received: from mproxy.gmail.com ([216.239.56.244]:53928 "EHLO mproxy.gmail.com") by vger.kernel.org with ESMTP id S261592AbVA2XQb (ORCPT ); Sat, 29 Jan 2005 18:16:31 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:references; b=DpaGNxKqkBlWoVEOmOKDkGLImxfgyxM4RXGDartjmiVSsMSAOElvEwcshOvr9QWRvHFGDIeS9RYn2hKOnUQmEnVEbY4SZm4+aZ5qJ5uePMv0Ie5laULVzLcJ2EddVt+i4b8/h1AG+hoWM9jpCdJ8hPQKarsli/f4sBU9/xTYxsY= Message-ID: <21d7e99705012915164660cd20@mail.gmail.com> Date: Sun, 30 Jan 2005 10:16:30 +1100 From: Dave Airlie Reply-To: Dave Airlie To: Lee Revell Subject: Re: DRI (was Re: OpenOffice crashes due to incorrect access permissions on /dev/dri/card*) Cc: Parag Warudkar , "Dr. David Alan Gilbert" , Jon Smirl , ee21rh@surrey.ac.uk, linux-kernel@vger.kernel.org In-Reply-To: <1107032714.24676.48.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit References: <9e473391050129112525f4947@mail.gmail.com> <1107030966.24676.28.camel@krustophenia.net> <20050129204036.GA1750@gallifrey> <41FBF8A0.6000708@comcast.net> <1107032714.24676.48.camel@krustophenia.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 971 Lines: 22 > > No, XAA is normally used for 2D acceleration. This is hardware > accelerated but doesn't use DRI, X does 2D accel by talking directly to > the hardware without the kernel's involvement. > well not totally true, X on radeon/r200/r300 cards needs the DRM to load the microcode for the command processor, this enables some major speedups in the 2D code (it still talk direct to the card, but needs the CP loading...) but X runs as root so it has no worries opening the device... the issue is with using having the perms set to 0660 since the drm started supporting sysfs and udev... normally X created the dri devices and set the permissions to what was in the X config, normally 666.... or 660 with a dri group... Dave. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/