On Thu, Nov 7, 2013 at 9:39 AM, Martin <martinr1...@yahoo.com> wrote: > IHAC, > > If my video card + monitor can do: "S3VIRGE(0): > Modeline "1400x1050"x74.8 155.80 1400 1464 1784 1912 1050 1052 1064 1090 > +hsync +vsync (81.5 kHz)", shouldn't it also be able to do: > "Modeline "1920x1080_67.50" 148.50 1920 2008 2052 2200 1080 1084 1089 > 1125 +hsync +vsync" > > I get: "S3VIRGE(0): Not using mode "1920x1080_67.50" (horizontal timing out > of range)" > > The horizontal timing range is: "Monitor0: Using hsync range of 30.00-81.00 > kHz" and "Clock range: 10.00 to 270.00 MHz" > > I calculated that v-refresh = 67.5 Hz, H-scan lines=60.0kHz and Dot clock = > 148.5 MHz (for the 1920x1080 resolution) > > All parameters are well within the reported ranges > Can you explain why it reports "(horizontal timing out of range)"?, the > pixel clock is below its maximum and when I calculate the hsync range it > fall within its range of 30.00-81.00 kHz? > > (I'm running at 16 bits color depth). > > Why is the Horizontal timing out of range and how can I verify it?
Check the source of the driver to verify for sure, but I suspect you are hitting a hardware limit on one of the horizontal timing registers. My guess is the htotal register probably only has 11 bits or something like that which would only allow for a max htotal of 2047 (or 2048 depending on how it's programmed) and your 1920x1080 modeline has an htotal value of 2200. Alex > > _______________________________________________ > xorg@lists.x.org: X.Org support > Archives: http://lists.freedesktop.org/archives/xorg > Info: http://lists.x.org/mailman/listinfo/xorg > Your subscription address: %(user_address)s _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
