From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Petr Vandrovec" Subject: Re: Another problem, seemingly coming f Date: Wed, 16 Oct 2002 09:00:27 +0200 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <4BECCE234BB@vcnet.vc.cvut.cz> Mime-Version: 1.0 Content-Transfer-Encoding: 7BIT Return-path: Received: from mailgw.cvut.cz ([147.32.3.235]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 181iAw-0003wA-00 for ; Wed, 16 Oct 2002 00:01:03 -0700 Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: "Carlo E. Prelz" Cc: linux-fbdev-devel@lists.sourceforge.net, gif@bek.no On 15 Oct 02 at 22:29, Carlo E. Prelz wrote: > > > the image that I am attaching has been sent to all three > > > > Unfortunately I do not see anything. I see horizontal black lines > > on all three monitors, and nothing else... > > I am now adding a version where I underline - with yellow lines - the > places where these artifacts appear. Ah, these ones... What pixclocks do you use? It is like if CRTC2 has not enough memory bandwidth available, and so it displays stale data. But it looks strange anyway. I'm afraid that I cannot help you, sorry. You can try experimenting with different pixclocks, different bit depths, and so on. But I cannot explain why it happens only when old Millennium is also in the box. > Everything happens as expected. First both good, then both bad, then > first bad and second good. So it is really caused by CRTC2, not by Maven. Even more strange, then it looks like that CRTC2 bus accesses are only possible source of problem (it could be also subpicture displayed over picture, but because of subpicture is YUV, while your corruption is copy of RGB surface, I think that it is impossible). Only problem I can think of is that system VCO frequency is always set to 133333 kHz (for G100/200/400) in matroxfb_DAC1064.c. Your PINS suggest that 200MHz are correct system clocks for your chip. Thanks, Petr Vandrovec vandrove@vc.cvut.cz ------------------------------------------------------- This sf.net email is sponsored by: viaVerio will pay you up to $1,000 for every account that you consolidate with us. http://ad.doubleclick.net/clk;4749864;7604308;v? http://www.viaverio.com/consolidator/osdn.cfm