From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: fglrx + radeonfb leads to crashes? Date: Thu, 18 Mar 2004 11:26:31 +1100 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <1079569590.909.12.camel@gaston> References: <200403172018.i2HKI5E0002012@napali.hpl.hp.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1B3laW-0006XP-0U for linux-fbdev-devel@lists.sourceforge.net; Wed, 17 Mar 2004 16:40:44 -0800 Received: from gate.crashing.org ([63.228.1.57] ident=root) by sc8-sf-mx2.sourceforge.net with esmtp (TLSv1:AES256-SHA:256) (Exim 4.30) id 1B3laS-0005sy-Tp for linux-fbdev-devel@lists.sourceforge.net; Wed, 17 Mar 2004 16:40:41 -0800 In-Reply-To: <200403172018.i2HKI5E0002012@napali.hpl.hp.com> Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: davidm@hpl.hp.com Cc: ajoshi@shell.unixbox.com, Linux Fbdev development list On Thu, 2004-03-18 at 07:18, David Mosberger wrote: > Hi Ani, > > I have a machine here with an ATI FireGL Z1 card. It works fine with > the ATI fglrx binary-only driver on 2.6.5-rc1. However, if radeonfb > is enabled and I try to stop the X server or switch away from it to > another virtual console, then the screen display gets all messed up > and the machine gets stuck. When this hapens, I periodically see this > kind of message: > > radeonfb: FIFO Timeout ! > > Now, this is on ia64 machine so at this point I'm just wondering > whether this problem also shows up on other machines. If it's an > ia64-specific problem, I can look into it. Otherwise, I guess I'll > just disable radeonfp for now. This is a known problem. I'm not sure at this point what ATI binary driver is doing, I think it messes up the card internal memory map, among others, and it definitely doesn't restore things properly when beeing switched out. I only have PPC machines so I can't experiment with it myself though. The "fix" might be as simple as restoring MC_FB_LOCATION, MC_AGP_LOCATION and the various offset when re-initing the mode (the latest fbdev will trigger a mode restore & engine reset when switching out from a KD_GRAPHICS console). Ben. ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click