I'm trying to setup my graphics card to work with RedHat8 and I'm having problems. I have a Dell D1626HT monitor which the manual says that can display 1600x1200 at 85 Hz. I can connect PC running XP or Win2k and I have no problems displaying that resolution at that refresh rate.
But I can't get RH to do the same. I started with nVidia GeForce2 MX 400 card and RH default driver and I could not get it configured. The only resolution that I could use was 1900X1450. At any other resolution the screen was flickering so badly that I could not look at it for more than a minute. I tried the nVidia drivers and the result was the same. I tried to experiment with different ModeLine(s) and I could not get it to work. Neither there was no change or X server would not start. I stress that the card works perfectly under XP so there can't be anything wrong with it. Since I had an old Matrox G200 card I decided to try it. It worked perfect. But I wanted something better than an old G200 so I swapped my GeForce2 MX 400 card for my dad's Matrox G400. I thought that since my old G200 worked perfect it would be easier to get it to work. Unfortunately that wasn't he case. The flickering is still here not as much pronounced as with nVidia card but it's there. I've tried RH8 drivers and Matrox drivers but no change. Again I tried different values for the ModeLine with various results (I found this web site http://xtiming.sourceforge.net/cgi-bin/xtiming.pl that generates Modeline(s)). I found that only line line sort of works for me: ModeLine "1600x1200@70" 221.02 1600 1632 2464 2496 1200 1223 1237 1261 +hsync +vsync But that is only 70 Hz refresh rate. I'd like to go higher than that but I can't if I try to increase the refresh rate the X server usually does not start. The thing that I'm getting confused about is the "pixel clock". When I run mgsdesk it tells me that the max pixel clock is 229 but when I look in the the X log file it says that 360. Which one to believe ? II) MGA(0): clock: 28.3 MHz Image Size: 388 x 291 mm (II) MGA(0): h_active: 720 h_sync: 738 h_sync_end 846 h_blank_end 900 h_border: 0 (II) MGA(0): v_active: 350 v_sync: 388 v_sync_end 390 v_blanking: 449 v_border: 0 (II) MGA(0): Serial No: 55348B0V6479 (II) MGA(0): Monitor name: DELL D1626HT (II) MGA(0): Ranges: V min: 50 V max: 160 Hz, H min: 30 H max: 107 kHz, PixClock max 2550 MHz (II) MGA(0): end of I2C Monitor info (==) MGA(0): Using gamma correction (1.0, 1.0, 1.0) (==) MGA(0): Min pixel clock is 12 MHz (==) MGA(0): Max pixel clock is 360 MHz (II) MGA(0): Display 1: Using hsync range of 30.00-107.00 kHz (II) MGA(0): Display 1: Using vrefresh range of 50.00-160.00 Hz (II) MGA(0): Clock range: 12.00 to 360.00 MHz When I create a ModeLine with Pixel Clock greater than 229 the X server won't start. But without going above 229 I can't increase refresh rate beyond 70 Hz. Can somebody help ? Am I missign something ? Has anybody managed to get G400 working with RH8 at resolution 1600x1200 at refresh rates above 70 Hz ? I would like to see their XF86Config file. Thanks - Tom _______________________________________________ XFree86 mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xfree86
