Date: Sat, 12 Feb 2000 23:14:51 -0500 From: Randall Hopper <aa8vb@ipass.net> To: pstern stern <pstern@65north.com> Cc: multimedia@freebsd.org Subject: Re: fxtv Message-ID: <20000212231451.A26356@ipass.net> In-Reply-To: <Pine.BSF.4.21.0002121411240.576-100000@jago.65north.com> References: <20000211180124.A3420@ipass.net> <Pine.BSF.4.21.0002121411240.576-100000@jago.65north.com>
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pstern stern: |Matrox Millenium 8mb ( the original Millenium) Ahh, the Millenium. Is your image normally inside your Fxtv window? If not, then problem is that there is a deficiency in XFree86 that won't be fixed until XFree86 4.0 for some Millenium cards. The issue is that on some Milleniums, the start of the frame buffer isn't the first scan line. Here's a tidbit from the XFree86 folks: ----- Forwarded message from Mark Vojkovich <mvojkovi@ucsd.edu> ----- ... [XFree86] 3.3.5 won't have that problem for cards that don't have WRAM. The problems with the old DGA is it didn't make the distinction between the start of the framebuffer and the start of the visible part of the framebuffer. For the WRAM cards, these are not the same for modes using more than 4 Meg of ram. Prior to 3.3.5, this was erroneously being done for non-WRAM cards as well. DGA 2.0 is the only way to remedy this problem for the Millennium and Millennium II. ----- End forwarded message ----- And here is the standard Fxtv hack that all the original Millenium folks are using until XFree86 4.0 fixes this: |> I've never had this problem, but a number of others on the list have (Tomi |> Vainio, Michael Petry, Igor Nikolaev). The binding factor generally seems |> to be Matrox 8Meg cards running at 32bpp at desktop sizes larger than |> 1024x768. |> |> If this is your case too, try replacing this line in tvcapture.c: |> video.addr = x->base_addr + (g.y * x->pitch + g.x) * Bpp; |> with this (for 1280x1024): |> video.addr = x->base_addr + (g.y * x->pitch + g.x + 256) * Bpp |> or this (for 1600x1200): |> video.addr = x->base_addr + (g.y * x->pitch + g.x + 640) * Bpp My guess is you'll need some number between 0 and 256. Another thing to try (possibly first, if your original TV image is in the window) is to Ctrl-Alt-+ down to 640x480 and make sure that that mode actually works as you have it configured in XF86Config. You can use "xvidtune" to see which mode you're currently in as you move down. |The other thing I see sometimes is ghosting as I change channels. I see |the previous channel for a long time as a ghost image when trying to view |the new channel. Hmm. Could be a weak video signal. See how things go after the patch. Randall To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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