From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: Re: ghosting with nvidia framebuffer (pci-e 6600), 1600x1200 and 12x22 font Date: Fri, 22 Jul 2005 21:22:13 +0800 Message-ID: <200507222122.16664.adaplas@gmail.com> References: <20050706190456.GA20251@amd64.of.nowhere> <200507221203.31810.adaplas@gmail.com> <20129.194.178.120.170.1122014146.squirrel@194.178.120.170> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1Dw5pi-0005fG-Ik for linux-fbdev-devel@lists.sourceforge.net; Fri, 22 Jul 2005 15:17:30 -0700 Received: from rproxy.gmail.com ([64.233.170.192]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1Dw5ph-0002J1-Ay for linux-fbdev-devel@lists.sourceforge.net; Fri, 22 Jul 2005 15:17:30 -0700 Received: by rproxy.gmail.com with SMTP id r35so86497rna for ; Fri, 22 Jul 2005 15:17:19 -0700 (PDT) In-Reply-To: <20129.194.178.120.170.1122014146.squirrel@194.178.120.170> Content-Disposition: inline Sender: linux-fbdev-devel-admin@lists.sourceforge.net 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: jurriaan@rivierenland.xs4all.nl Cc: linux-fbdev-devel@lists.sourceforge.net, jurriaan , adaplas@hotpop.com, adaplas@pol.net On Friday 22 July 2005 14:35, Jurriaan Kalkman wrote: > > On Thursday 07 July 2005 03:04, jurriaan wrote: > >> Kernel command line: root=/dev/hda1 video=nvidiafb:1600x1200-32@85 > >> atkbd.softrepeat=1 > >> > >> nvidiafb: nVidia device/chipset 10DE0141 > >> nvidiafb: PCI device 10de:0141 (nVidia Corporation) > >> nvidiafb: CRTC0 found > >> nvidiafb: CRTC1 found > >> nvidiafb: CRTC 0 appears to have a CRT attached > >> nvidiafb: Using CRT on CRTC 0 > >> nvidiafb: MTRR set to ON > >> Console: switching to colour frame buffer device 133x54 > >> nvidiafb: PCI nVidia NV14 framebuffer (64MB @ 0xC0000000) > >> > >> I'm running at 1600x1200 resolution with the 12x22 font, and a > >> 2.6.13-rc1-mm1 kernel. > >> > >> A strange effect is noticeable: often characters from the left of the > >> screen are ghosted on the right of the screen. Not all of the pixels > >> that form a character, but enough to be visible. To my best knowledge, > >> the ghosting starts at column 85, and 85 * 12 = 1020, which may mean > >> some sort of erroneous wrap-around at pixel 1024 is taking place? > > > > It looks like a timings problem. Are the effects still present if you > > try to change modes? > > I'll try that later tonight, when I'm home again. > However, whatever corruption is on screen, when I switch virtual consoles > from tty1 to 2 and back (alt-f2 alt-f1), it disappears completely. Until I > force the screen to scroll up by pressing return at the last line, then > they reappear again. Ah, okay, if it disappears and then reappears on scrolling, then yes, it is probably not a timings problem. Forget about adjusting the video timings, but let me know if switching resolutions work. Try setting vyres = yres and see if that helps. It's either a panning problem or a bitblit problem. Tony ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click