-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 sean enlightened us with the following gems on 15/10/05 18:34: > David Becker wrote: > >> sean wrote: >> >>> On fc4, updated, I have a dell flat screen with a intel i915g chips - >>> using xoreg i820 - that I want to run at 1280x1024x60. >>> >>> Desktop-> Preferences -> Screen Resoltuion does not let me change the >>> refresh rate. It stays at 75hz. >>> >>> I hand edited xorg.conf so that the monitor section has >>> >>> VertRefresh 60 >> >> >> >> It's best to leave these values at whatever your monitor specifies. >> >> If X doesn't automatically choose a suitable modeline for your monitor >> (I assume you have some kind of TFT that doesn't work above 60 hz), then >> you can calculate these values yourself; >> >> Find a modeline calculator on the net. Given your monitor's >> characteristics, they allow you to fix one or more parameters (such as >> Vertical refresh rate and resolution) while finding the modeline values >> to accommodate. >> >> Copy the result of the modeline calculator to the 'Monitor' section of >> xorg.conf. >> >> I for instance used this to calculate a suitable interlaced >> (exaggerated) 200Hz frequency for PAL television viewing as in: >> >> Section "Monitor" >> Identifier "LG915FTPlus" >> VendorName "LG" >> ModelName "915FTPlus" >> HorizSync 30.0 - 107.0 >> VertRefresh 50.0 - 200.0 >> Option "dpms" >> # TV (PAL) Viewing >> # Measured xawtv dimensions at 760x573 >> # 200hz >> Modeline "760x573@200i" 64.46 760 792 1032 1064 573 582 593 603 >> interlace >> EndSection >> >> Then insert or append the modeline identifier ("760x573@200i") to the >> list of Modes in the 'Screen' section of xorg.conf. >> >> Regards, >> >> David >> >> > > > Great idea. I'll try it. > > sean > there is a built-in Modeline calculator on your system, called gtf syntax (for 1024x768@ 60Hz): gtf 1024 768 60 should generate output a bit like # 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync you can drop the -HSync +Vsync bit, and this would give you a modeline (in your Monitor section of xorg.conf)... Modeline "1024x768" 64.11 1024 1080 1184 1344 768 769 772 795 I used to have to do this for my Dell widescreen laptop. Regards Stuart - -- Stuart Sears RHCE RHCX /* This card is _fucking_ hot... */ linux-2.6.6/drivers/net/sunhme.c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFDUVHZamPtx1brPQ4RArY6AJ9U4SYptu57xpZR+ipr3UPw0kDemwCggJn3 TyjdMzpYlKgMn+uXLYkhkEY= =dmjC -----END PGP SIGNATURE-----