>>>>> "lukekendall" == lukekendall <[EMAIL PROTECTED]> writes:
lukekendall> On 26 Jan, Peter Chubb wrote: >> It's not actually that hard to calculate the modeline. >> >> where Hxxxx is 1920 plus how many dot clocks after the scan before >> the horizontal sync pulse, Hyyyy is Hxxxx plus the Hsync width >> divided by the dot clock, and Hzzzz is the total time for each >> horzontal scan. lukekendall> Ah. Yes, I remember the problem I had, now: not enough lukekendall> knowledge. :-) How do you work out the horizontal sync lukekendall> pulse? If X says: lukekendall> (II) NV(0): Supported additional Video Mode: (II) NV(0): lukekendall> clock: 229.5 MHz Image Size: 392 x 294 mm (II) NV(0): lukekendall> h_active: 1600 h_sync: 1664 h_sync_end 1856 h_blank_end lukekendall> 2160 h_border: 0 (II) NV(0): v_active: 1200 v_sync: 1201 lukekendall> v_sync_end 1204 v_blanking: 1250 v_border: 0 (II) NV(0): lukekendall> Serial No: 24-CD405 (II) NV(0): Monitor name: IBM C220P lukekendall> CRT (II) NV(0): Ranges: V min: 50 V max: 160 Hz, H min: lukekendall> 30 H max: 130 kHz, PixClock max 370 MHz (II) NV(0): end lukekendall> of DDC Monitor info lukekendall> I assume this means the maximum clock frequency is 350 lukekendall> MHZ (dot clock 350)? Or is it PixClock max, 370? And if No, 370MHz. But you need to use a lower freq. to get the characteristics you want.lukekendall> I tried this in the Monitor section: lukekendall> Mode "1920x1440" DotClock 350 HTimings 1920 2072 lukekendall> 2299 2656 VTimings 1440 1441 1444 1512 Flags "-HSync lukekendall> +VSync" EndMode Mode "2048x1536" DotClock 350 HTimings lukekendall> 2048 2216 2440 2832 VTimings 1536 1537 1540 1603 Flags lukekendall> "-HSync +VSync" EndMode lukekendall> But got the error: lukekendall> Parse error on line 59 of section Monitor in file lukekendall> /etc/X11/XF86Config-4 Unknown flag string (EE) Problem lukekendall> parsing the config file (EE) Error from lukekendall> xf86HandleConfigFile() lukekendall> By commenting out the Flags lines, I was able to get the lukekendall> 2048x1536 mode to work, though the 1920x1440 mode looks lukekendall> dangerous - the screen sort of folds back over itself and lukekendall> looks dark. You can recognise where the windows (folded lukekendall> horizontally) are. That implies the HSync pulse is wrong. Try running xvidtune, and adjusting it. lukekendall> Should I have left the DotClock at your 341.5, or perhaps Yes. lukekendall> tried 370? Does that affect the other numbers? And yes. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
